I am trying to setup a kafka producer with KafkaAvroSerialzer for value. And I am facing this error wheneve rit is trying to created the Producer. I am using all the jars provided in confluent 5.2.1
java.lang.NoClassDefFoundError: Could not initialize class io.confluent.kafka.schemaregistry.client.rest.RestService
at io.confluent.kafka.schemaregistry.client.CachedSchemaRegistryClient.<init>(CachedSchemaRegistryClient.java:104)
at io.confluent.kafka.schemaregistry.client.CachedSchemaRegistryClient.<init>(CachedSchemaRegistryClient.java:81)
at io.confluent.kafka.serializers.AbstractKafkaAvroSerDe.configureClientProperties(AbstractKafkaAvroSerDe.java:53)
at io.confluent.kafka.serializers.AbstractKafkaAvroSerializer.configure(AbstractKafkaAvroSerializer.java:43)
at io.confluent.kafka.serializers.KafkaAvroSerializer.configure(KafkaAvroSerializer.java:48)
at org.apache.kafka.clients.producer.KafkaProducer.<init>(KafkaProducer.java:370)
at org.apache.kafka.clients.producer.KafkaProducer.<init>(KafkaProducer.java:298)
at swing.KafkaUtilityPanel.sendMessage(KafkaUtilityPanel.java:229)
at swing.KafkaUtilityPanel.access$1200(KafkaUtilityPanel.java:32)
at swing.KafkaUtilityPanel$4.actionPerformed(KafkaUtilityPanel.java:164)
at javax.swing.AbstractButton.fireActionPerformed(AbstractButton.java:2022)
at javax.swing.AbstractButton$Handler.actionPerformed(AbstractButton.java:2348)
at javax.swing.DefaultButtonModel.fireActionPerformed(DefaultButtonModel.java:402)
at javax.swing.DefaultButtonModel.setPressed(DefaultButtonModel.java:259)
at javax.swing.plaf.basic.BasicButtonListener.mouseReleased(BasicButtonListener.java:252)
at java.awt.Component.processMouseEvent(Component.java:6533)
at javax.swing.JComponent.processMouseEvent(JComponent.java:3324)
at java.awt.Component.processEvent(Component.java:6298)
at java.awt.Container.processEvent(Container.java:2236)
at java.awt.Component.dispatchEventImpl(Component.java:4889)
at java.awt.Container.dispatchEventImpl(Container.java:2294)
at java.awt.Component.dispatchEvent(Component.java:4711)
at java.awt.LightweightDispatcher.retargetMouseEvent(Container.java:4888)
at java.awt.LightweightDispatcher.processMouseEvent(Container.java:4525)
at java.awt.LightweightDispatcher.dispatchEvent(Container.java:4466)
at java.awt.Container.dispatchEventImpl(Container.java:2280)
at java.awt.Window.dispatchEventImpl(Window.java:2746)
at java.awt.Component.dispatchEvent(Component.java:4711)
at java.awt.EventQueue.dispatchEventImpl(EventQueue.java:758)
at java.awt.EventQueue.access$500(EventQueue.java:97)
at java.awt.EventQueue$3.run(EventQueue.java:709)
at java.awt.EventQueue$3.run(EventQueue.java:703)
at java.security.AccessController.doPrivileged(Native Method)
at java.security.ProtectionDomain$JavaSecurityAccessImpl.doIntersectionPrivilege(ProtectionDomain.java:80)
at java.security.ProtectionDomain$JavaSecurityAccessImpl.doIntersectionPrivilege(ProtectionDomain.java:90)
at java.awt.EventQueue$4.run(EventQueue.java:731)
at java.awt.EventQueue$4.run(EventQueue.java:729)
at java.security.AccessController.doPrivileged(Native Method)
at java.security.ProtectionDomain$JavaSecurityAccessImpl.doIntersectionPrivilege(ProtectionDomain.java:80)
at java.awt.EventQueue.dispatchEvent(EventQueue.java:728)
at java.awt.EventDispatchThread.pumpOneEventForFilters(EventDispatchThread.java:201)
at java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:116)
at java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:105)
at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:101)
at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:93)
at java.awt.EventDispatchThread.run(EventDispatchThread.java:82)
Producer
This is the producer part I have added and it is failing at trying to create the kafka producer with KafkaAvroSerializer.
try {
//Configure connection properties
Properties producerConfig = createKafkaProducerProperties(environment);
//Create Kafka Producer
try (KafkaProducer<String, GenericRecord> myProducer = new KafkaProducer<>(producerConfig)) {
//Create ProducerRecord
Schema schema = new Schema.Parser().parse(new File("src/main/resources/investorOnboarding.avsc"));
GenericRecordBuilder genericRecordBuilder = new GenericRecordBuilder(schema);
GenericData.Record genericRecord = genericRecordBuilder.build();
final ProducerRecord<String, GenericRecord> myProducerRecord = new ProducerRecord<>(topicName.getCode(), genericRecord);
//Send the message
myProducer.send(myProducerRecord, new Callback() {
#Override
public void onCompletion(RecordMetadata metadata, Exception exception) {
if(exception == null){
alertSuccessStatus("Message has been successfully sent to Kafka");
}
}
});
//Disconnect
myProducer.close();
}
} catch (Exception ex) {
logger.info(ex.getMessage());
}
}
private Properties createKafkaProducerProperties(Environment implementation) throws UnknownHostException, PasswordProviderException {
Properties producerConfig = new Properties();
producerConfig.put("client.id", InetAddress.getLocalHost().getHostName());
producerConfig.put("bootstrap.servers", implementation.getBootStrapServers());
producerConfig.put("key.serializer", "org.apache.kafka.common.serialization.StringSerializer");
producerConfig.put("value.serializer", "io.confluent.kafka.serializers.KafkaAvroSerializer");
producerConfig.put("schema.registry.url", "http://localhost:8085");
Jars Added
You need to use kafka-schema-registry-client, and I don't think you need kafka-schema-registry.
In any case, I'd strongly recommend you use Maven or Gradle to manage dependencies for any Java project
https://docs.confluent.io/current/clients/install.html#installation-maven
Related
I am making an installer for an mc mod it has to donwload the zip file of the mod from a server but when my installer(for the mod) tries to unzip the 1.12 version it throws an but it works with all the other versions.(when I unzip it myself on my pc and zip it again and run my installer again it also works with the 1.12 version).
I tried to rename the file because I first thought it maybe couldn't find it because of the dots in the name: modpack_0.1.0.jar
public static void unZip(String src, String dest) {
try (ZipFile file = new ZipFile(src)) {
FileSystem fileSystem = FileSystems.getDefault();
// Get file entries
Enumeration<? extends ZipEntry> entries = file.entries();
// We will unzip files in this folder
String uncompressedDirectory = dest;
Path path = Paths.get(dest);
if (Files.exists(path)) {
deleteDirectoryStream(path);
Files.createDirectory(fileSystem.getPath(uncompressedDirectory));
}
else {
Files.createDirectory(fileSystem.getPath(uncompressedDirectory));
}
// Iterate over entries
while (entries.hasMoreElements()) {
ZipEntry entry = entries.nextElement();
// If directory then create a new directory in uncompressed folder
if (entry.isDirectory()) {
System.out.println("Creating Directory:" + uncompressedDirectory + entry.getName());
Files.createDirectories(fileSystem.getPath(uncompressedDirectory + entry.getName()));
}
// Else create the file
else {
InputStream is = file.getInputStream(entry);
BufferedInputStream bis = new BufferedInputStream(is);
String uncompressedFileName = uncompressedDirectory + entry.getName();
Path uncompressedFilePath = fileSystem.getPath(uncompressedFileName);
Files.createFile(uncompressedFilePath);
FileOutputStream fileOutput = new FileOutputStream(uncompressedFileName);
while (bis.available() > 0) {
fileOutput.write(bis.read());
}
fileOutput.close();
System.out.println("Written :" + entry.getName());
}
}
} catch (IOException e) {
e.printStackTrace();
}
}
I expected that it would unzip the 1.12 version without any errors just like the other versions but it gave me an error:
java.nio.file.NoSuchFileException: /Users/usernamehere/Library/Application Support/minecraft/mods/CraftingDead/bin/modpack.jar
at sun.nio.fs.UnixException.translateToIOException(UnixException.java:86)
at sun.nio.fs.UnixException.rethrowAsIOException(UnixException.java:102)
at sun.nio.fs.UnixException.rethrowAsIOException(UnixException.java:107)
at sun.nio.fs.UnixFileSystemProvider.newByteChannel(UnixFileSystemProvider.java:214)
at java.nio.file.Files.newByteChannel(Files.java:361)
at java.nio.file.Files.createFile(Files.java:632)
at com.craftingdead.installer.Actions.unZip(Actions.java:144)
at com.craftingdead.installer.Gui.installModAndForge(Gui.java:185)
at com.craftingdead.installer.Gui.actionPerformed(Gui.java:429)
at javax.swing.AbstractButton.fireActionPerformed(AbstractButton.java:2022)
at javax.swing.AbstractButton$Handler.actionPerformed(AbstractButton.java:2348)
at javax.swing.DefaultButtonModel.fireActionPerformed(DefaultButtonModel.java:402)
at javax.swing.DefaultButtonModel.setPressed(DefaultButtonModel.java:259)
at javax.swing.plaf.basic.BasicButtonListener.mouseReleased(BasicButtonListener.java:252)
at java.awt.Component.processMouseEvent(Component.java:6533)
at javax.swing.JComponent.processMouseEvent(JComponent.java:3324)
at java.awt.Component.processEvent(Component.java:6298)
at java.awt.Container.processEvent(Container.java:2238)
at java.awt.Component.dispatchEventImpl(Component.java:4889)
at java.awt.Container.dispatchEventImpl(Container.java:2296)
at java.awt.Component.dispatchEvent(Component.java:4711)
at java.awt.LightweightDispatcher.retargetMouseEvent(Container.java:4897)
at java.awt.LightweightDispatcher.processMouseEvent(Container.java:4534)
at java.awt.LightweightDispatcher.dispatchEvent(Container.java:4475)
at java.awt.Container.dispatchEventImpl(Container.java:2282)
at java.awt.Window.dispatchEventImpl(Window.java:2746)
at java.awt.Component.dispatchEvent(Component.java:4711)
at java.awt.EventQueue.dispatchEventImpl(EventQueue.java:760)
at java.awt.EventQueue.access$500(EventQueue.java:97)
at java.awt.EventQueue$3.run(EventQueue.java:709)
at java.awt.EventQueue$3.run(EventQueue.java:703)
at java.security.AccessController.doPrivileged(Native Method)
at java.security.ProtectionDomain$JavaSecurityAccessImpl.doIntersectionPrivilege(ProtectionDomain.java:80)
at java.security.ProtectionDomain$JavaSecurityAccessImpl.doIntersectionPrivilege(ProtectionDomain.java:90)
at java.awt.EventQueue$4.run(EventQueue.java:733)
at java.awt.EventQueue$4.run(EventQueue.java:731)
at java.security.AccessController.doPrivileged(Native Method)
at java.security.ProtectionDomain$JavaSecurityAccessImpl.doIntersectionPrivilege(ProtectionDomain.java:80)
at java.awt.EventQueue.dispatchEvent(EventQueue.java:730)
at java.awt.EventDispatchThread.pumpOneEventForFilters(EventDispatchThread.java:205)
at java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:116)
at java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:105)
at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:101)
at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:93)
at java.awt.EventDispatchThread.run(EventDispatchThread.java:82)
Exception in thread "AWT-EventQueue-0" java.lang.NullPointerException
at com.craftingdead.installer.Gui.installModAndForge(Gui.java:200)
at com.craftingdead.installer.Gui.actionPerformed(Gui.java:429)
at javax.swing.AbstractButton.fireActionPerformed(AbstractButton.java:2022)
at javax.swing.AbstractButton$Handler.actionPerformed(AbstractButton.java:2348)
at javax.swing.DefaultButtonModel.fireActionPerformed(DefaultButtonModel.java:402)
at javax.swing.DefaultButtonModel.setPressed(DefaultButtonModel.java:259)
at javax.swing.plaf.basic.BasicButtonListener.mouseReleased(BasicButtonListener.java:252)
at java.awt.Component.processMouseEvent(Component.java:6533)
at javax.swing.JComponent.processMouseEvent(JComponent.java:3324)
at java.awt.Component.processEvent(Component.java:6298)
at java.awt.Container.processEvent(Container.java:2238)
at java.awt.Component.dispatchEventImpl(Component.java:4889)
at java.awt.Container.dispatchEventImpl(Container.java:2296)
at java.awt.Component.dispatchEvent(Component.java:4711)
at java.awt.LightweightDispatcher.retargetMouseEvent(Container.java:4897)
at java.awt.LightweightDispatcher.processMouseEvent(Container.java:4534)
at java.awt.LightweightDispatcher.dispatchEvent(Container.java:4475)
at java.awt.Container.dispatchEventImpl(Container.java:2282)
at java.awt.Window.dispatchEventImpl(Window.java:2746)
at java.awt.Component.dispatchEvent(Component.java:4711)
at java.awt.EventQueue.dispatchEventImpl(EventQueue.java:760)
at java.awt.EventQueue.access$500(EventQueue.java:97)
at java.awt.EventQueue$3.run(EventQueue.java:709)
at java.awt.EventQueue$3.run(EventQueue.java:703)
at java.security.AccessController.doPrivileged(Native Method)
at java.security.ProtectionDomain$JavaSecurityAccessImpl.doIntersectionPrivilege(ProtectionDomain.java:80)
at java.security.ProtectionDomain$JavaSecurityAccessImpl.doIntersectionPrivilege(ProtectionDomain.java:90)
at java.awt.EventQueue$4.run(EventQueue.java:733)
at java.awt.EventQueue$4.run(EventQueue.java:731)
at java.security.AccessController.doPrivileged(Native Method)
at java.security.ProtectionDomain$JavaSecurityAccessImpl.doIntersectionPrivilege(ProtectionDomain.java:80)
at java.awt.EventQueue.dispatchEvent(EventQueue.java:730)
at java.awt.EventDispatchThread.pumpOneEventForFilters(EventDispatchThread.java:205)
at java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:116)
at java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:105)
at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:101)
at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:93)
at java.awt.EventDispatchThread.run(EventDispatchThread.java:82)
Does someone know why it could be giving me an error?
This question already has answers here:
ClassNotFoundException com.mysql.jdbc.Driver [duplicate]
(21 answers)
Closed 4 years ago.
I am making a program for the interviewers to submit their marks for a particular candidate. The interviews are on 5.7.18 and I have to submit the program before Tuesday/Wednesday. I am unable to connect to the MySQL database. I think there is some problem in user creation. The marks entered from 5 different PCs should go to a MySQL database in a different PC
Here is my url/password/username -
private static final String URL = "jdbc:mysql://192.168.1.35:3306/interview";
private static final String USER = "root";
private static final String PASSWORD = "ubuntu";
Here is my JAVA code -
try {
Class.forName("com.mysql.jdbc.Driver").newInstance();
Connection con = DriverManager.getConnection(URL, USER, PASSWORD);
JOptionPane.showMessageDialog(null,"Connection Established!","Alert", JOptionPane.INFORMATION_MESSAGE);
String q1="select username from users";
Statement st = con.createStatement();
String usr=jTextField2.getText();
String psw=(new String(jPasswordField1.getPassword()));
ResultSet rs = st.executeQuery(q1);
boolean flag_usr=false;
while(rs.next())
{
if(usr.equals(rs.getString("username")))
{
flag_usr=true;
}
}
if(flag_usr==true)
{
String q2="select password from users";
ResultSet rs1 = st.executeQuery(q2);
boolean flag_psw=false;
while(rs1.next())
{
if(psw.equals(rs1.getString("password")))
{
this.dispose();
JOptionPane.showMessageDialog(null,"Login successful!","Alert", JOptionPane.INFORMATION_MESSAGE);
new Marks().setVisible(true);
}
}
}
}
catch(Exception e)
{
e.printStackTrace();
}
And I am getting this error on clicking login button in whose function
the above code is written -
java.lang.ClassNotFoundException: com.mysql.jdbc.Driver
at java.net.URLClassLoader.findClass(URLClassLoader.java:381)
at java.lang.ClassLoader.loadClass(ClassLoader.java:424)
at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:335)
at java.lang.ClassLoader.loadClass(ClassLoader.java:357)
at java.lang.Class.forName0(Native Method)
at java.lang.Class.forName(Class.java:264)
at interview.portal.Login.jButton1ActionPerformed(Login.java:178)
at interview.portal.Login.access$000(Login.java:21)
at interview.portal.Login$1.actionPerformed(Login.java:81)
at javax.swing.AbstractButton.fireActionPerformed(AbstractButton.java:2022)
at javax.swing.AbstractButton$Handler.actionPerformed(AbstractButton.java:2348)
at javax.swing.DefaultButtonModel.fireActionPerformed(DefaultButtonModel.java:402)
at javax.swing.DefaultButtonModel.setPressed(DefaultButtonModel.java:259)
at javax.swing.plaf.basic.BasicButtonListener.mouseReleased(BasicButtonListener.java:252)
at java.awt.Component.processMouseEvent(Component.java:6533)
at javax.swing.JComponent.processMouseEvent(JComponent.java:3324)
at java.awt.Component.processEvent(Component.java:6298)
at java.awt.Container.processEvent(Container.java:2236)
at java.awt.Component.dispatchEventImpl(Component.java:4889)
at java.awt.Container.dispatchEventImpl(Container.java:2294)
at java.awt.Component.dispatchEvent(Component.java:4711)
at java.awt.LightweightDispatcher.retargetMouseEvent(Container.java:4888)
at java.awt.LightweightDispatcher.processMouseEvent(Container.java:4525)
at java.awt.LightweightDispatcher.dispatchEvent(Container.java:4466)
at java.awt.Container.dispatchEventImpl(Container.java:2280)
at java.awt.Window.dispatchEventImpl(Window.java:2746)
at java.awt.Component.dispatchEvent(Component.java:4711)
at java.awt.EventQueue.dispatchEventImpl(EventQueue.java:758)
at java.awt.EventQueue.access$500(EventQueue.java:97)
at java.awt.EventQueue$3.run(EventQueue.java:709)
at java.awt.EventQueue$3.run(EventQueue.java:703)
at java.security.AccessController.doPrivileged(Native Method)
at java.security.ProtectionDomain$JavaSecurityAccessImpl.doIntersectionPrivilege(ProtectionDomain.java:80)
at java.security.ProtectionDomain$JavaSecurityAccessImpl.doIntersectionPrivilege(ProtectionDomain.java:90)
at java.awt.EventQueue$4.run(EventQueue.java:731)
at java.awt.EventQueue$4.run(EventQueue.java:729)
at java.security.AccessController.doPrivileged(Native Method)
at java.security.ProtectionDomain$JavaSecurityAccessImpl.doIntersectionPrivilege(ProtectionDomain.java:80)
at java.awt.EventQueue.dispatchEvent(EventQueue.java:728)
at java.awt.EventDispatchThread.pumpOneEventForFilters(EventDispatchThread.java:201)
at java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:116)
at java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:105)
at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:101)
at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:93)
at java.awt.EventDispatchThread.run(EventDispatchThread.java:82)
BUILD SUCCESSFUL (total time: 5 seconds)
It seems the mysql connectivity library is not included in the project. Solve the problem following one of the proposed solutions:
Refer
java.lang.ClassNotFoundException: com.mysql.jdbc.Driver in Eclipse
Download a MySQL Connector/J and add the .jar to your classpath.
I'm getting this exception when I run my code. Even though the code runs fine, I'm getting some exceptions on the terminal
Exception in thread "AWT-EventQueue-1" java.lang.IllegalThreadStateException
at java.lang.Thread.start(Thread.java:708)
at SR.start(SR.java:38)
at SR.mouseClicked(SR.java:212)
at java.awt.Component.processMouseEvent(Component.java:6536)
at java.awt.Component.processEvent(Component.java:6298)
at java.awt.Container.processEvent(Container.java:2236)
at java.awt.Window.processEvent(Window.java:2025)
at java.awt.Component.dispatchEventImpl(Component.java:4889)
at java.awt.Container.dispatchEventImpl(Container.java:2294)
at java.awt.Window.dispatchEventImpl(Window.java:2746)
at java.awt.Component.dispatchEvent(Component.java:4711)
at java.awt.EventQueue.dispatchEventImpl(EventQueue.java:758)
at java.awt.EventQueue.access$500(EventQueue.java:97)
at java.awt.EventQueue$3.run(EventQueue.java:709)
at java.awt.EventQueue$3.run(EventQueue.java:703)
at java.security.AccessController.doPrivileged(Native Method)
at java.security.ProtectionDomain$JavaSecurityAccessImpl.doIntersectionPrivilege(ProtectionDomain.java:80)
at java.security.ProtectionDomain$JavaSecurityAccessImpl.doIntersectionPrivilege(ProtectionDomain.java:90)
at java.awt.EventQueue$4.run(EventQueue.java:731)
at java.awt.EventQueue$4.run(EventQueue.java:729)
at java.security.AccessController.doPrivileged(Native Method)
at java.security.ProtectionDomain$JavaSecurityAccessImpl.doIntersectionPrivilege(ProtectionDomain.java:80)
at java.awt.EventQueue.dispatchEvent(EventQueue.java:728)
at org.GNOME.Accessibility.AtkWrapper$5.dispatchEvent(AtkWrapper.java:700)
at java.awt.EventDispatchThread.pumpOneEventForFilters(EventDispatchThread.java:201)
at java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:116)
at java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:105)
at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:101)
at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:93)
at java.awt.EventDispatchThread.run(EventDispatchThread.java:82)
What am i doing wrong??
My start() method
private void start() throws IllegalStateException {
if (HelperThread == null)
HelperThread = new Thread(this);
HelperThread.start();
}
You appear to be starting the same Thread twice, which is not allowed.
If you're looking to reuse the same thread, I would recommend creating an ExecutorService instead.
The problem is that if HelperThread is not null (it already exists) and you call HelperThread.start() is tries to start() a thread that has already started or finished it's processing. If you want to restart processing, you'll have to stop the thread first. To do this gracefully, use a while (running) { } pattern in the actual thread. Then, int the start()-method, set the flag to false, wait for the thread to die and then start a new thread:
private void start() throws IllegalStateException {
if (HelperThread != null) {
running = false;
HelperThread.join(); // wait for it to die...
}
// Start fresh...
HelperThread = new Thread(this);
HelperThread.start();
}
Also, as a side note, avoid using capital letters as the first letters for variables. It should rather be "helperThread".
I have the following class:
public class Finance {
private User user;
private ArrayList<account> account;
private ArrayList<Categorie> categorie;
private ArrayList<salary> salary;
private static final Finance instance=new GestaoFinancas();
public static Finance getFinance() {
return instance;
}
private Finance() {
user=new User();
account=new ArrayList<>();
categorie=new ArrayList<>();
salary=new ArrayList<>();
categorie.add(new Categoria("Food"));
categorie.add(new Categoria("Sleep"));
categorie.add(new Categoria("Fun"));
}
public void setUser(User user) {
this.user = user;
}
}
And im trying to add a new user to it:
import pt.finance.modelo.Finance;
...
User user = new User( jTextField1.getText(), jTextField2.getText(), jTextField3.getText());
getFinance().setUser(user);//here is the problem
My question is how can i give a new user, plus should i write Finance.getFinance or getFinance? Everytime i attempt to give Finance a new user i get the following error:
Exception in thread "AWT-EventQueue-0" java.lang.ExceptionInInitializerError
at pt.ipleiria.estg.es1.financaspessoais.vista.DadosUtilizador.jButton2ActionPerformed(DadosUtilizador.java:127)
at pt.ipleiria.estg.es1.financaspessoais.vista.DadosUtilizador.access$200(DadosUtilizador.java:14)
at pt.ipleiria.estg.es1.financaspessoais.vista.DadosUtilizador$3.actionPerformed(DadosUtilizador.java:72)
at javax.swing.AbstractButton.fireActionPerformed(AbstractButton.java:2022)
at javax.swing.AbstractButton$Handler.actionPerformed(AbstractButton.java:2348)
at javax.swing.DefaultButtonModel.fireActionPerformed(DefaultButtonModel.java:402)
at javax.swing.DefaultButtonModel.setPressed(DefaultButtonModel.java:259)
at javax.swing.plaf.basic.BasicButtonListener.mouseReleased(BasicButtonListener.java:252)
at java.awt.Component.processMouseEvent(Component.java:6533)
at javax.swing.JComponent.processMouseEvent(JComponent.java:3324)
at java.awt.Component.processEvent(Component.java:6298)
at java.awt.Container.processEvent(Container.java:2236)
at java.awt.Component.dispatchEventImpl(Component.java:4889)
at java.awt.Container.dispatchEventImpl(Container.java:2294)
at java.awt.Component.dispatchEvent(Component.java:4711)
at java.awt.LightweightDispatcher.retargetMouseEvent(Container.java:4888)
at java.awt.LightweightDispatcher.processMouseEvent(Container.java:4525)
at java.awt.LightweightDispatcher.dispatchEvent(Container.java:4466)
at java.awt.Container.dispatchEventImpl(Container.java:2280)
at java.awt.Window.dispatchEventImpl(Window.java:2746)
at java.awt.Component.dispatchEvent(Component.java:4711)
at java.awt.EventQueue.dispatchEventImpl(EventQueue.java:758)
at java.awt.EventQueue.access$500(EventQueue.java:97)
at java.awt.EventQueue$3.run(EventQueue.java:709)
at java.awt.EventQueue$3.run(EventQueue.java:703)
at java.security.AccessController.doPrivileged(Native Method)
at java.security.ProtectionDomain$JavaSecurityAccessImpl.doIntersectionPrivilege(ProtectionDomain.java:80)
at java.security.ProtectionDomain$JavaSecurityAccessImpl.doIntersectionPrivilege(ProtectionDomain.java:90)
at java.awt.EventQueue$4.run(EventQueue.java:731)
at java.awt.EventQueue$4.run(EventQueue.java:729)
at java.security.AccessController.doPrivileged(Native Method)
at java.security.ProtectionDomain$JavaSecurityAccessImpl.doIntersectionPrivilege(ProtectionDomain.java:80)
at java.awt.EventQueue.dispatchEvent(EventQueue.java:728)
at java.awt.EventDispatchThread.pumpOneEventForFilters(EventDispatchThread.java:201)
at java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:116)
at java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:109)
at java.awt.WaitDispatchSupport$2.run(WaitDispatchSupport.java:184)
at java.awt.WaitDispatchSupport$4.run(WaitDispatchSupport.java:229)
at java.awt.WaitDispatchSupport$4.run(WaitDispatchSupport.java:227)
at java.security.AccessController.doPrivileged(Native Method)
at java.awt.WaitDispatchSupport.enter(WaitDispatchSupport.java:227)
at java.awt.Dialog.show(Dialog.java:1084)
at java.awt.Component.show(Component.java:1671)
at java.awt.Component.setVisible(Component.java:1623)
at java.awt.Window.setVisible(Window.java:1014)
at java.awt.Dialog.setVisible(Dialog.java:1005)
at pt.ipleiria.estg.es1.financaspessoais.vista.FinancasPessoais.btnAlterarUtilizadorActionPerformed(FinancasPessoais.java:174)
at pt.ipleiria.estg.es1.financaspessoais.vista.FinancasPessoais.access$000(FinancasPessoais.java:13)
at pt.ipleiria.estg.es1.financaspessoais.vista.FinancasPessoais$1.actionPerformed(FinancasPessoais.java:51)
at javax.swing.AbstractButton.fireActionPerformed(AbstractButton.java:2022)
at javax.swing.AbstractButton$Handler.actionPerformed(AbstractButton.java:2348)
at javax.swing.DefaultButtonModel.fireActionPerformed(DefaultButtonModel.java:402)
at javax.swing.DefaultButtonModel.setPressed(DefaultButtonModel.java:259)
at javax.swing.plaf.basic.BasicButtonListener.mouseReleased(BasicButtonListener.java:252)
at java.awt.Component.processMouseEvent(Component.java:6533)
at javax.swing.JComponent.processMouseEvent(JComponent.java:3324)
at java.awt.Component.processEvent(Component.java:6298)
at java.awt.Container.processEvent(Container.java:2236)
at java.awt.Component.dispatchEventImpl(Component.java:4889)
at java.awt.Container.dispatchEventImpl(Container.java:2294)
at java.awt.Component.dispatchEvent(Component.java:4711)
at java.awt.LightweightDispatcher.retargetMouseEvent(Container.java:4888)
at java.awt.LightweightDispatcher.processMouseEvent(Container.java:4525)
at java.awt.LightweightDispatcher.dispatchEvent(Container.java:4466)
at java.awt.Container.dispatchEventImpl(Container.java:2280)
at java.awt.Window.dispatchEventImpl(Window.java:2746)
at java.awt.Component.dispatchEvent(Component.java:4711)
at java.awt.EventQueue.dispatchEventImpl(EventQueue.java:758)
at java.awt.EventQueue.access$500(EventQueue.java:97)
at java.awt.EventQueue$3.run(EventQueue.java:709)
at java.awt.EventQueue$3.run(EventQueue.java:703)
at java.security.AccessController.doPrivileged(Native Method)
at java.security.ProtectionDomain$JavaSecurityAccessImpl.doIntersectionPrivilege(ProtectionDomain.java:80)
at java.security.ProtectionDomain$JavaSecurityAccessImpl.doIntersectionPrivilege(ProtectionDomain.java:90)
at java.awt.EventQueue$4.run(EventQueue.java:731)
at java.awt.EventQueue$4.run(EventQueue.java:729)
at java.security.AccessController.doPrivileged(Native Method)
at java.security.ProtectionDomain$JavaSecurityAccessImpl.doIntersectionPrivilege(ProtectionDomain.java:80)
at java.awt.EventQueue.dispatchEvent(EventQueue.java:728)
at java.awt.EventDispatchThread.pumpOneEventForFilters(EventDispatchThread.java:201)
at java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:116)
at java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:105)
at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:101)
at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:93)
at java.awt.EventDispatchThread.run(EventDispatchThread.java:82)
Caused by: java.lang.UnsupportedOperationException: Not supported yet.
at pt.ipleiria.estg.es1.financaspessoais.modelo.Utilizador.<init>(Utilizador.java:21)
at pt.ipleiria.estg.es1.financaspessoais.modelo.GestaoFinancas.<init>(GestaoFinancas.java:26)
at pt.ipleiria.estg.es1.financaspessoais.modelo.GestaoFinancas.<clinit>(GestaoFinancas.java:20)
Caused by: java.lang.UnsupportedOperationException: Not supported yet.
at pt.ipleiria.estg.es1.financaspessoais.modelo.Utilizador.<init>(Utilizador.java:21)
at pt.ipleiria.estg.es1.financaspessoais.modelo.GestaoFinancas.<init>(GestaoFinancas.java:26)
at pt.ipleiria.estg.es1.financaspessoais.modelo.GestaoFinancas.<clinit>(GestaoFinancas.java:20)
That's your problem. On line 21 of your Utilizador class there's a problem (probably deliberately throwing UnsupportedOperationException to show that it hasn't been fully implemented yet). So you're failing to instantiate Utilizador. You should either look there and figure it out, or post that code too.
private void cmbProductItemStateChanged(java.awt.event.ItemEvent evt) {
if (cmbProduct.getSelectedIndex() > 0) {
Connection con = null;
CallableStatement cstmt = null;
ResultSet rs = null;
try {
con = DatabaseHelper.getConnection();
cstmt = con.prepareCall("{?=call getProductQty(?)}");
cstmt.registerOutParameter(1, java.sql.Types.INTEGER);
cstmt.setString(2, cmbProduct.getSelectedItem().toString());
cstmt.execute();
int output = cstmt.getInt(1);
lblQty.setText(String.valueOf(output));
cstmt = con.prepareCall("{call avg_price(getProductId(?)}");
cstmt.setString(1, cmbProduct.getSelectedItem().toString());
cstmt.execute();
rs = cstmt.getResultSet();
while (rs.next()) {
lblPrice.setText(rs.getString(1));
}
} catch (Exception e) {
e.printStackTrace();
} finally {
try {
con.close();
cstmt.close();
rs.close();
} catch (SQLException ex) {
ex.printStackTrace();
}
}
}
}
I am making a Java Inventory Management System. Currently I am in the data fetching process from the database. I have written code in the cmbProductItemStateChanged event of ComboBox. There is no syntax error.
getProductQty and getProductId are a function. avg_price is a procedure.
com.mysql.jdbc.exceptions.jdbc4.MySQLSyntaxErrorException: You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near '' at line 1
at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:62)
at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
at java.lang.reflect.Constructor.newInstance(Constructor.java:423)
at com.mysql.jdbc.Util.handleNewInstance(Util.java:411)
at com.mysql.jdbc.Util.getInstance(Util.java:386)
at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:1053)
at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:4120)
at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:4052)
at com.mysql.jdbc.MysqlIO.sendCommand(MysqlIO.java:2503)
at com.mysql.jdbc.MysqlIO.sqlQueryDirect(MysqlIO.java:2664)
at com.mysql.jdbc.ConnectionImpl.execSQL(ConnectionImpl.java:2794)
at com.mysql.jdbc.PreparedStatement.executeInternal(PreparedStatement.java:2155)
at com.mysql.jdbc.PreparedStatement.execute(PreparedStatement.java:1379)
at com.mysql.jdbc.CallableStatement.execute(CallableStatement.java:920)
at IMS.Inventory.cmbProductItemStateChanged(Inventory.java:242)
at IMS.Inventory.access$000(Inventory.java:19)
at IMS.Inventory$1.itemStateChanged(Inventory.java:75)
at javax.swing.JComboBox.fireItemStateChanged(JComboBox.java:1223)
at javax.swing.JComboBox.selectedItemChanged(JComboBox.java:1271)
at javax.swing.JComboBox.contentsChanged(JComboBox.java:1330)
at javax.swing.AbstractListModel.fireContentsChanged(AbstractListModel.java:118)
at javax.swing.DefaultComboBoxModel.setSelectedItem(DefaultComboBoxModel.java:93)
at javax.swing.JComboBox.setSelectedItem(JComboBox.java:576)
at javax.swing.JComboBox.setSelectedIndex(JComboBox.java:622)
at javax.swing.plaf.basic.BasicComboPopup$Handler.mouseReleased(BasicComboPopup.java:852)
at java.awt.AWTEventMulticaster.mouseReleased(AWTEventMulticaster.java:290)
at java.awt.Component.processMouseEvent(Component.java:6533)
at javax.swing.JComponent.processMouseEvent(JComponent.java:3324)
at javax.swing.plaf.basic.BasicComboPopup$1.processMouseEvent(BasicComboPopup.java:501)
at java.awt.Component.processEvent(Component.java:6298)
at java.awt.Container.processEvent(Container.java:2236)
at java.awt.Component.dispatchEventImpl(Component.java:4889)
at java.awt.Container.dispatchEventImpl(Container.java:2294)
at java.awt.Component.dispatchEvent(Component.java:4711)
at java.awt.LightweightDispatcher.retargetMouseEvent(Container.java:4888)
at java.awt.LightweightDispatcher.processMouseEvent(Container.java:4525)
at java.awt.LightweightDispatcher.dispatchEvent(Container.java:4466)
at java.awt.Container.dispatchEventImpl(Container.java:2280)
at java.awt.Window.dispatchEventImpl(Window.java:2746)
at java.awt.Component.dispatchEvent(Component.java:4711)
at java.awt.EventQueue.dispatchEventImpl(EventQueue.java:758)
at java.awt.EventQueue.access$500(EventQueue.java:97)
at java.awt.EventQueue$3.run(EventQueue.java:709)
at java.awt.EventQueue$3.run(EventQueue.java:703)
at java.security.AccessController.doPrivileged(Native Method)
at java.security.ProtectionDomain$JavaSecurityAccessImpl.doIntersectionPrivilege(ProtectionDomain.java:76)
at java.security.ProtectionDomain$JavaSecurityAccessImpl.doIntersectionPrivilege(ProtectionDomain.java:86)
at java.awt.EventQueue$4.run(EventQueue.java:731)
at java.awt.EventQueue$4.run(EventQueue.java:729)
at java.security.AccessController.doPrivileged(Native Method)
at java.security.ProtectionDomain$JavaSecurityAccessImpl.doIntersectionPrivilege(ProtectionDomain.java:76)
at java.awt.EventQueue.dispatchEvent(EventQueue.java:728)
at java.awt.EventDispatchThread.pumpOneEventForFilters(EventDispatchThread.java:201)
at java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:116)
at java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:105)
at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:101)
at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:93)
at java.awt.EventDispatchThread.run(EventDispatchThread.java:82)
Exception in thread "AWT-EventQueue-0" java.lang.NullPointerException
at IMS.Inventory.cmbProductItemStateChanged(Inventory.java:254)
at IMS.Inventory.access$000(Inventory.java:19)
at IMS.Inventory$1.itemStateChanged(Inventory.java:75)
at javax.swing.JComboBox.fireItemStateChanged(JComboBox.java:1223)
at javax.swing.JComboBox.selectedItemChanged(JComboBox.java:1271)
at javax.swing.JComboBox.contentsChanged(JComboBox.java:1330)
at javax.swing.AbstractListModel.fireContentsChanged(AbstractListModel.java:118)
at javax.swing.DefaultComboBoxModel.setSelectedItem(DefaultComboBoxModel.java:93)
at javax.swing.JComboBox.setSelectedItem(JComboBox.java:576)
at javax.swing.JComboBox.setSelectedIndex(JComboBox.java:622)
at javax.swing.plaf.basic.BasicComboPopup$Handler.mouseReleased(BasicComboPopup.java:852)
at java.awt.AWTEventMulticaster.mouseReleased(AWTEventMulticaster.java:290)
at java.awt.Component.processMouseEvent(Component.java:6533)
at javax.swing.JComponent.processMouseEvent(JComponent.java:3324)
at javax.swing.plaf.basic.BasicComboPopup$1.processMouseEvent(BasicComboPopup.java:501)
at java.awt.Component.processEvent(Component.java:6298)
at java.awt.Container.processEvent(Container.java:2236)
at java.awt.Component.dispatchEventImpl(Component.java:4889)
at java.awt.Container.dispatchEventImpl(Container.java:2294)
at java.awt.Component.dispatchEvent(Component.java:4711)
at java.awt.LightweightDispatcher.retargetMouseEvent(Container.java:4888)
at java.awt.LightweightDispatcher.processMouseEvent(Container.java:4525)
at java.awt.LightweightDispatcher.dispatchEvent(Container.java:4466)
at java.awt.Container.dispatchEventImpl(Container.java:2280)
at java.awt.Window.dispatchEventImpl(Window.java:2746)
at java.awt.Component.dispatchEvent(Component.java:4711)
at java.awt.EventQueue.dispatchEventImpl(EventQueue.java:758)
at java.awt.EventQueue.access$500(EventQueue.java:97)
at java.awt.EventQueue$3.run(EventQueue.java:709)
at java.awt.EventQueue$3.run(EventQueue.java:703)
at java.security.AccessController.doPrivileged(Native Method)
at java.security.ProtectionDomain$JavaSecurityAccessImpl.doIntersectionPrivilege(ProtectionDomain.java:76)
at java.security.ProtectionDomain$JavaSecurityAccessImpl.doIntersectionPrivilege(ProtectionDomain.java:86)
at java.awt.EventQueue$4.run(EventQueue.java:731)
at java.awt.EventQueue$4.run(EventQueue.java:729)
at java.security.AccessController.doPrivileged(Native Method)
at java.security.ProtectionDomain$JavaSecurityAccessImpl.doIntersectionPrivilege(ProtectionDomain.java:76)
at java.awt.EventQueue.dispatchEvent(EventQueue.java:728)
at java.awt.EventDispatchThread.pumpOneEventForFilters(EventDispatchThread.java:201)
at java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:116)
at java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:105)
at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:101)
at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:93)
at java.awt.EventDispatchThread.run(EventDispatchThread.java:82)
There is a closing parenthesis missing:
cstmt = con.prepareCall("{call avg_price(getProductId(?))}");
^ (added)