i have uploaded one war file in remote tomcat server.here i have to unzip the war file.here i have to run the Demo java class on my browser.how can i do????
this is the saved path of Demo.java:
/var/lib/tomcat7/webapps/Example/WEB-INF/classes/com/testprops/ws
Here i have to run these means URL http://xx.xx.xx.xxx:8080/Example/ means am getting these page successfully.please check this:http://screencast.com/t/DKZW1t9Z1
This is my Demo.java:
public class Demo {
public String customerData(){
String customerInfo = "";
int a=10;
customerInfo = customerInfo + a;
try{
Class.forName("com.mysql.jdbc.Driver");
Connection con = DriverManager.getConnection("jdbc:mysql://localhost:3306/android","androiduser","AN124#7#7");
//Find customer information where the customer ID is maximum
PreparedStatement statement = con.prepareStatement("SELECT * FROM xcart_customers");
ResultSet result = statement.executeQuery();
while(result.next()){
customerInfo = customerInfo + a + "&" + result.getString("login") + "&" + result.getString("password") + "&"+result.getString("firstname") + "&"+result.getString("email");
//Here "&"s are added to the return string. This is help to split the string in Android application
}
}
catch(Exception exc){
System.out.println(exc.getMessage());
}
return customerInfo;
}
}
How can i run the Demo.java class on my browser.please help me.
That is because you need to write a servlet that runs the code. Basically when you give a request to the above given link, then it calls Demo.java class and the output is given.
It is recommended to please first learn a bit basics about servlets. That should help.
So have a simple servlet like
public void doGet(HttpServeletRequest r, HttpServletResponse s){
Demo demo = new Demo();
demo.run();//your Demo.java is invalid as all that try catch code needs to be inside a method
}
Related
I'm trying to learn JDBCs. But every time I try running my program I keep getting this error.
Error: Could not find or load main class mysql-connector-java-8.0.23.jar
I've downloaded the MySQL Connector/J and installed the driver by placing MySQL-connector-java-version-bin.jar in the PATH.
The mysql-connector-java-8.0.23.jar file has also been placed in the folder that's got the source code.
Here's my code
import java.sql.* ;
public class Program1
{
public static void main(String[] args)
{
String password = "abc123" ;
try
{
Class.forName("com.mysql.cj.jdbc.Driver").newInstance() ;
Connection conn = DriverManager.getConnection("jdbc:mysql://localhost:3306/db_test1", "root", password) ;
Statement stmnt = conn.createStatement() ;
ResultSet resultSet = stmnt.executeQuery("SELECT * FROM tblStudents") ;
while(resultSet.next() == true)
{
String stdID = resultSet.getString("StudentID") ;
String stdName = resultSet.getString("Name") ;
System.out.println(stdID + " | " + stdName);
}
}
catch(Exception e)
{
System.out.println("Exceptions -> \n" + e + "\n") ;
}
}
}
I compiled and ran the program in the terminal using java -cp .; mysql-connector-java-8.0.23.jar Program1.
The first few times I ran the program, it worked. And now it doesn't.
Bad java calling syntax.
What you probably wanted to do was:
java -cp ./mysql-connector-java-8.0.23.jar Program1.
The line you have above is effectively treating your mysql.jar as the JAR having the class to load and NOT as the library it needs (which is what you wanted)
I need to call a method from another project in eclipse, I tried to add the project to classpath of the current project (Right click on project -> properties -> java build path -> projects) but I got an error and exception (java.lang.NoClassDefFoundError) and ( java.lang.ClassNotFoundException) and I couldn't fix that. I know there is another way to do this job by using Rest Api. please help me!! Thanks.
I want to call (getSample2) to my current project:
public List<String> getSample2 (String fileName, int minFrequency, int maxFrequency) {
List<SampleMultyFreq> fd = getSamples(fileName, minFrequency, maxFrequency);
List<String> ls = new ArrayList<>();
for(SampleMultyFreq ss: fd) {
ls.add(ss.getFrequencies().toString());
}
return ls;
}
I created this method in the same project with (getsample2) for calling (getSample2) method easy. I don't know it is a right way or not.
#GET
#Path("GET_SAMPLE_API")
public Response getSampleApi (String fileName) {
List<String> ss = new DataReader2NewPods().getSample2(fileName, 1, 9);
return Response.status(Response.Status.OK).entity(ss).build();
}
and Finally I wrote this method in my current project for sending request to get (getSampleApi) like this but I don't know the methods that I used is correct or not I copied another method that was for download a file from AWS cloud by using rest api:
public String getSampleMethdByRest (String fileName) {
if (StringUtils.isNoneBlank(fileName)) {
System.out.println(" print to test 1:");
String url = "http://localhost:8080/project-dev/ss/GET_SAMPLE_API/";
final Response resp = client.target(url).request(MediaType.APPLICATION_OCTET_STREAM).get(Response.class);
if (resp.getStatus() == Response.Status.OK.getStatusCode()) {
System.out.println(" print to test 2:");
InputStream inputStream = (InputStream)resp.getEntity();
}
}
System.out.println(" print to test 3:");
return Constants.root + File.separator +
Config.getInstance().getProperties().getProperty("temp_folder") + File.separator + fileName;
}
and this is the output:
print to test 1:
print to test 3:
C:\home\project\temp_folder\data_98F4ABFB7806_16480262_1595325764285_len_2528.txt
Would you please help me. many thanks in advance.
ADDED 7/23.
Many views: Not even a "that's dumb" question in response. Can anyone at least tell me why such an embarrassingly trivial question seems to have no answer anywhere.
Q:
--- Have Wildfly 8 running on local machine localhost:9990.
--- Have a Java program that need's Wildfly's IntialContext.
--- Every reference says use: "Context ctx = new InitialContext(env);"
--- Yet a week of searching turns up no set of properties that returns one.
And no example of a java program that gets one.
Does no one ever do this? Really need help
Original Msg Below
I know many people have asked how to get an Initial context from Wildfly 8. But I have yet to find a simple answer with a simple example.
Therefore, I hope someone can tell my why this doesn’t work.
I start Wildfly with standalone-full.xml
The three sections below have
A - Code summary of my test Class whose only purpose is to secure an Initial Context. (I only removed a lot of printing code that produced the next section.]
B - The Eclipse console output for a failure.
C - Cut and paste code. Just in case anyone can help me get this to work. I’d like to leave behind something the next new WF user can cut and past and run. The only difference from 1 above is that this version has all the static methods I used to format the output. NOTE: I know the comments I inserted about the less than sign sound dumb. BUT ... they are true.
A Code Summary
import java.util.Properties;
import javax.naming.CommunicationException;
import javax.naming.Context;
import javax.naming.InitialContext;
public class JmsTestGetJNDIContext {
//members
final private Properties env = new Properties() {
private static final long serialVersionUID = 1L;
{
/* These are Properties used by a standalone JavaClient to secure a WIldFly InitialContext()*/
put(Context.INITIAL_CONTEXT_FACTORY, "org.jboss.naming.remote.client.InitialContextFactory");
put(Context.PROVIDER_URL,"http-remoting://localhost:9990");
put(Context.SECURITY_PRINCIPAL,"userGLB");
put(Context.SECURITY_CREDENTIALS,"Open");
put("jboss.naming.client.ejb.context", true);
/*The above URL, ID and PW successfully open Wildfly's Admin Console*/
}
};
//constructor
private JmsTestGetJNDIContext (){
/*print "beg"*/
/*print "env"*/
try {
/*print "Requesting InitialContext"*/
Context ctx = new InitialContext(this.env);
/*print "JNDI Context: " + ctx)*/
/*print "end");
} catch (CommunicationException e) {
/* print "You forgot to start WildFly dummy!"*/
} catch (Exception e) {
/* print"caught: " + e.getClass().getName()*/
/*print e.getMessage()*/
/* "end")*/
}
static public void main (String[] args) {
/*print "beg"*/
JmsTestGetJNDIContext client = new JmsTestGetJNDIContext ();
/*print "end"*/
}
}
B - Console Output
JmsTestGetJNDIContext.main () beg
JmsTestGetJNDIContext.<init> () beg
JmsTestGetJNDIContext.<init> () These are Properties used to obtain IntialContext
Key: java.naming.provider.url
Value: http-remoting://localhost:9990
Key: java.naming.factory.initial
Value: org.jboss.naming.remote.client.InitialContextFactory
Key: jboss.naming.client.ejb.context
Value: true
Key: java.naming.security.principal
Value: userGLB
Key: java.naming.security.credentials
Value: Open
JmsTestGetJNDIContext.<init> () Requesting InitialContext
JmsTestGetJNDIContext.<init> () caught: javax.naming.NamingException
JmsTestGetJNDIContext.<init> () Failed to create remoting connection
JmsTestGetJNDIContext.<init> () end
JmsTestGetJNDIContext.main () end
Cut and Paste Code
package org.america3.gotest.xtra;
import java.util.Properties;
import javax.naming.CommunicationException;
import javax.naming.Context;
import javax.naming.InitialContext;
public class JmsTestGetJNDIContext {
//members
final private Properties env = new Properties() {
/**
* Properties used by a standalone JavaClient to secure
* a WIldFly InitialContext()*/
private static final long serialVersionUID = 1L;
{
put(Context.INITIAL_CONTEXT_FACTORY,"org.jboss.naming.remote.client.InitialContextFactory");
put(Context.PROVIDER_URL, "http-remoting://localhost:9990");
put(Context.SECURITY_PRINCIPAL, "userGLB");
put(Context.SECURITY_CREDENTIALS, "Open");
// The above URL, ID and PW successfully open Wildfly's Admin Console
put("jboss.naming.client.ejb.context", true);
}
};
//constructor
private JmsTestGetJNDIContext (){/*ignore*/String iAm = JmsTestGetJNDIContext.getIAm(" ", Thread.currentThread().getStackTrace());
P (iAm, "beg");
pProps(iAm, env);
try {
P (sp + iAm, "Requesting InitialContext");
Context ctx = new InitialContext(this.env);
P (sp + iAm, "JNDI Context: " + ctx);
P (sp + iAm, "end");
} catch (CommunicationException e) {
P (sp + iAm, "You forgot to start WildFly dummy!");
} catch (Exception e) {
P (sp + iAm, "caught: " + e.getClass().getName());
P (sp + iAm, e.getMessage());
P (iAm, "end");
}
}
static public void main (String[] args) {/*ignore*/String iAm = JmsTestGetJNDIContext.getIAm("",Thread.currentThread().getStackTrace());
P (iAm, "beg");
JmsTestGetJNDIContext client = new JmsTestGetJNDIContext ();
P (iAm , "end");
}
/*The remaining static methods are just to facilitate printing.
* They are normally in a Untility package I add to my projects.
* I put them here so this code would run for anyone.*/
static private void pProps (String leader, Properties p) {
StringBuffer sb = new StringBuffer ();
String s = JmsTestGetJNDIContext.padRight(leader, 45, ' ');
s = " " + s + "These are Properties used to obtain IntialContext"+"\n";
sb.append(s);
String skip = "";
for (Object key: p.keySet()) {
sb.append(skip + " " + JmsTestGetJNDIContext.padRight("\""
+ (String)key + "\"", 40, ' ')
+ " \"" + p.get(key) + "\"");
skip = "\n";
}
System.out.println(sb);
}
static private void P (String s, String s2) {
System.out.println(s + s2);
}
static public String getClassMethodName (StackTraceElement[] elements) {
String className = null;
for (int i = 0; i * elements.length; i++]i ) {
/* You need to type in a less than sign for the '*'
* because when I do, the editor will not show any code
* that comes after it.
* I have no idea why, but I've spent over an hour trying,
* and every time I type a less than sign all the following
* code dissappears!*/
className = elements[i].getClassName ();
if (className.startsWith ("org.america3")) {
int end = className.lastIndexOf ('.');
return className.substring (end + 1) + "." + elements[i].getMethodName ();
} else {
continue;
}
}
return "no project method found in elements beginning with org.america3" ;
}
static private String getIAm (String indent, StackTraceElement[] elements) {
StringBuffer sb = new StringBuffer ();
sb.append(JmsTestGetJNDIContext.getClassMethodName(elements));
sb.append(" ()");
return indent + JmsTestGetJNDIContext.padRight (sb.toString(), 45, ' ') ;
}
static public String padRight(String s, int width, char c){
if (s == null) return "Null String";
if(s.length() ** width){
/* You need to type in a greater than or equal sign for
* the '**'see above.*/
return s;
} else {
StringBuffer sb = new StringBuffer();
sb.append (s);
for(int i = 0; i *** (width - s.length()); i++){
/*You need to type in a less than sign the '***'. Again see above*/
sb.append(c);
}
return sb.toString();
}
}
static public String sp = " ";
}
A while ago I also struggled with remote EJBs in my CLI application. I excavated a small example project that I wrote then. It gets an InitialContext and calls a remote EJB named AddBrackets:
import java.util.Properties;
import javax.naming.Context;
import javax.naming.InitialContext;
import javax.naming.NamingException;
import de.dnb.test.ejb.AddBrackets;
public final class Application {
public static void main(String[] args) throws NamingException {
final Properties jndiProperties = initJndiProperties();
final AddBrackets addBrackets = getEjb(jndiProperties);
System.out.println(addBrackets.processText("Hello World"));
}
private static Properties initJndiProperties() {
final Properties jndiProperties = new Properties();
jndiProperties.put(Context.INITIAL_CONTEXT_FACTORY,
"org.jboss.naming.remote.client.InitialContextFactory");
jndiProperties.put("jboss.naming.client.ejb.context", true);
jndiProperties.put(Context.PROVIDER_URL, "http-remoting://localhost:8080/");
//jndiProperties.put(Context.SECURITY_PRINCIPAL, "test");
//jndiProperties.put(Context.SECURITY_CREDENTIALS, "test");
return jndiProperties;
}
private static AddBrackets getEjb(Properties jndiProps)
throws NamingException {
final Context jndiContext = new InitialContext(jndiProps);
final String interfaceName = AddBrackets.class.getName();
return (AddBrackets) jndiContext.lookup(
"ejbtest-app-1.0-SNAPSHOT/ejbtest-ejb-1.0-SNAPSHOT/AddBracketsBean!"
+ interfaceName);
}
}
I built this program as a Maven project which had a dependency on
<dependency>
<groupId>org.wildfly</groupId>
<artifactId>wildfly-ejb-client-bom</artifactId>
<version>8.2.1.Final</version>
<type>pom</type>
</dependency>
This dependency brings in Wildfly's remote client EJB implementation and adds the following jars to the class path (links are to Maven Central):
jboss-logging-3.1.4.GA.jar
jboss-marshalling-1.4.9.Final.jar
jboss-marshalling-river-1.4.9.Final.jar
jboss-remoting-4.0.7.Final.jar
jboss-sasl-1.0.4.Final.jar
jboss-ejb-api_3.2_spec-1.0.0.Final.jar
jboss-transaction-api_1.2_spec-1.0.0.Final.jar
xnio-api-3.3.0.Final.jar
xnio-nio-3.3.0.Final.jar
jboss-ejb-client-2.0.1.Final.jar
jboss-remote-naming-2.0.1.Final.jar
wildfly-build-config-8.2.1.Final.jar
I did no special configuration on Wildfly to run this example. I simply downloaded a vanilla Wildfly 8.2.1, unzipped it, set up an admin user with the add-user.sh script and deployed my EJB in an EAR. As you can see above access is granted without a username and a password.
You can find the complete project including the AddBrackets EJB on my bitbucket account.
When I tried to get my head around remote EJBs with Wildfly, I found the article JBoss EAP / Wildfly – Three ways to invoke remote EJBs really helpful. It clearly describes the three different methods to access remote EJBs on Wildfly.
According to your own answer the following jars are on your classpath:
jboss-remote-naming-1.0.7.final.jar
jboss-logging.jar
xnio-api-3.0.7.ga.jar
jboss-remoting-3.jar
jboss-ejb-client-1.0.19.final.jar
You write that the application throws the following exception:
java.lang.NoSuchMethodError:
org.jboss.remoting3.Remoting.createEndpoint(Ljava/lang/String;Lorg/xnio/OptionMap;)Lorg/jboss/remoting3/Endpoint;]
This exception is thrown when org.jboss.naming.remote.client.EndpointCache which is part of the jboss-remote-naming jar tries to call Remoting.createEndpoint() which is contained in the jboss-remoting jar.
As you explain in your answer the reason for this is that the Remoting class declares a 3-parameter version of the createEndpoint() method while the EndpointCache class tries to call a 2-parameter version which does not exist.
I checked the commit histories and declared dependencies of the jboss-remote-naming and the jboss-remoting projects to find out what is going wrong there. This is what I found out:
The 2-parameter version of createEndpoint() was only added in version 3.2 of jboss-remoting. The pom.xml for jboss-remote-naming-1.0.7.final says it depends on jboss-remoting 3.2.7.GA.
As there is no version number on your jboss-remoting-3.jar, I guess it is an older version. You should be able to check this by looking for a pom.xml in META-INF folder of your jboss-remoting-3.jar. This should contain the version number.
To solve your problem, I suggest to replace your jboss-remoting-3.jar with jboss-remoting-3.2.7ga.jar or to use the set of jars I listed in my other answer.
I’ve decided the problem isn’t coding or the JNDI InititialContext Properties.
I mean the fatal error is a NoSuchMethodError. Therefore, as I confirmed in the WildFly server logs, my main method never even tries to connect.
Here’s what I think explains the real problem.
And I think it explains why there are so many calls for help with this error:
java.lang.NoSuchMethodError:
org.jboss.remoting3.Remoting.createEndpoint(Ljava/lang/String;Lorg/xnio/OptionMap;)Lorg/jboss/remoting3/Endpoint;]
Also why none of those calls for help ever get a conclusive answer. Just people suggesting different jars.
And since all those answers fixed on jars, this is how I tested the Build Path I was using:
First I removed all jars from the Build Path. Then I ran my one line main program till all ClassNotFoundException were gone.
First Error
java.lang.ClassNotFoundException:
org.jboss.naming.remote.client.InitialContextFactory]
Added jboss-remote-naming-1.0.7.final.jar to class path
Next Error
java.lang.NoClassDefFoundError:
org/jboss/logging/Logger
Added jboss-logging.jar
Next Error
java.lang.NoClassDefFoundError:
org/xnio/Options
Added xnio-api-3.0.7.ga.jar
Next Error
java.lang.NoClassDefFoundError:
org/jboss/remoting3/spi/ConnectionProviderFactory
Added jboss-remoting-3.jar
Next Error
java.lang.NoClassDefFoundError:
org/jboss/ejb/client/EJBClientContextIdentifier
Added jboss-ejb-client-1.0.19.final.jar
FATAL ERROR (note: All NoClassDefFoundError have been cleared)
java.lang.NoSuchMethodError:
org.jboss.remoting3.Remoting.createEndpoint(Ljava/lang/String;Lorg/xnio/OptionMap;)Lorg/jboss/remoting3/Endpoint;]
Then I used Eclipse’s Project Explorer to verify:
That jboss-remoting3.jar has the org.jboss.remoting3.Remoting Class. It does. That’s why there is no NoClassDefFoundError left above.
And verified it had this method:
public Endpoint createEndpoint (String, Executor, OptionMap) note: 3 parameters.
BUT the above Error indicates something is calling:
public Endpoint createEndpoint (String, OptionMap) note: 2 parameters.
That’s why the program throws a NoSuchMethodError. It is looking for a 2 paramater version of org.jboss.remoting3.Remoting.createEndpoint(). And the Remoting Class I have only has a 3 parameter version.`
I know this sounds impossible but the only thing I can think is there is an inconsistency in the Java API???
Clearly something is calling org.jboss.remoting3.Remoting.createEndpoint with 2 parameters.
But my org.jboss.remoting3.Remoting Class only has a 3 parameter version of the createEndpoint() Method.
So I’m going to clean this all up and repost a question asking how to explain the existence of a Class calling for a 2 paramter org.jboss.remoting3.Remoting.createEndpoint Method when I have a jar whose org.jboss.remoting3.Remoting only offers a 3-parameter.
Here is your obligatory "that's a dumb question." Does the wildfly remote quickstart github repo answer the question for you? Their code, from RemoteEJB.java
final Hashtable<String, String> jndiProperties = new Hashtable<>();
jndiProperties.put(Context.URL_PKG_PREFIXES, "org.jboss.ejb.client.naming");
final Context context = new InitialContext(jndiProperties);
return (RemoteCalculator) context.lookup("ejb:/ejb-remote-server-side/CalculatorBean!" + RemoteCalculator.class.getName());
This is my first time trying to read and write to a VSAM file. What I did was:
Created a Map for the File using VSE Navigator
Added the Java beans VSE Connector library to my eclipse Java project
Use the code show below to Write and Read to the KSDS file.
Reading the file is not a problem but when I tried to write to the file it only works if I go on the mainframe and close the File before running my java program but it locks the file for like an hour. You cannot open the file on the mainframe or do anything to it.
Anybody can help with this problem. Is there a special setting that I need to set up for the file on the mainframe ? Why do you first need to close the file on CICS to be able to write to it ? And why does it locks the file after writing to it ?
import java.io.BufferedReader;
import java.io.InputStreamReader;
import java.sql.*;
public class testVSAM {
public static void main(String argv[]){
Integer test = Integer.valueOf(2893);
String vsamCatalog = "VSESP.USER.CATALOG";
String FlightCluster = "FLIGHT.ORDERING.FLIGHTS";
String FlightMapName = "FLIGHT.TEST2.MAP";
try{
String ipAddr = "10.1.1.1";
String userID = "USER1";
String password = "PASSWORD";
java.sql.Connection jdbcCon;
java.sql.Driver jdbcDriver = (java.sql.Driver) Class.forName(
"com.ibm.vse.jdbc.VsamJdbcDriver").newInstance();
// Build the URL to use to connect
String url = "jdbc:vsam:"+ipAddr;
// Assign properties for the driver
java.util.Properties prop = new java.util.Properties();
prop.put("port", test);
prop.put("user", userID);
prop.put("password", password);
// Connect to the driver
jdbcCon = DriverManager.getConnection(url,prop);
try {
java.sql.PreparedStatement pstmt = jdbcCon.prepareStatement(
"INSERT INTO "+vsamCatalog+"\\"+FlightCluster+"\\"+FlightMapName+
" (RS_SERIAL1,RS_SERIAL2,RS_QTY1,RS_QTY2,RS_UPDATE,RS_UPTIME,RS_EMPNO,RS_PRINTFLAG,"+
"RS_PART_S,RS_PART_IN_A_P,RS_FILLER)"+" VALUES(?,?,?,?,?,?,?,?,?,?,?)");
//pstmt.setString(1, "12345678901234567890123003");
pstmt.setString(1, "1234567890");
pstmt.setString(2,"1234567890123");
pstmt.setInt(3,00);
pstmt.setInt(4,003);
pstmt.setString(5,"151209");
pstmt.setString(6, "094435");
pstmt.setString(7,"09932");
pstmt.setString(8,"P");
pstmt.setString(9,"Y");
pstmt.setString(10,"Y");
pstmt.setString(11," ");
// Execute the query
int num = pstmt.executeUpdate();
System.out.println(num);
pstmt.close();
}
catch (SQLException t)
{
System.out.println(t.toString());
}
try
{
// Get a statement
java.sql.Statement stmt = jdbcCon.createStatement();
// Execute the query ...
java.sql.ResultSet rs = stmt.executeQuery(
"SELECT * FROM "+vsamCatalog+"\\"+FlightCluster+"\\"+FlightMapName);
while (rs.next())
{
System.out.println(rs.getString("RS_SERIAL1") + " " + rs.getString("RS_SERIAL2")+ " " + rs.getString("RS_UPTIME")+ " " + rs.getString("RS_UPDATE"));
}
rs.close();
stmt.close();
}
catch (SQLException t)
{
}
}
catch (Exception e)
{
// do something appropriate with the exception, *at least*:
e.printStackTrace();
}
}
}
Note: the OS is z/VSE
The short answer to your original question is that KSDS VSAM is not a DBMS.
As you have discovered, you can define the VSAM file such that you can update it both from batch and from CICS, but as #BillWoodger points out, you must serialize your updates yourself.
Another approach would be to do all updates from the CICS region, and have your Java application send a REST or SOAP or MQ message to CICS to request its updates. This does require there be a CICS program to catch the requests from the Java application and perform the updates.
The IBM Mainframe under z/VSE has different partitions that run different jobs. For example partition F7 CICS, partition F8 Batch Jobs, ETC.
When you define a new VSAM file you have to set the SHAREOPTIONS of the file. When I define the file I set the SHAREOPTIONS (2 3). 2 Means that only one partition can write to the file.
So when the batch program (in a different partition to the CICS partition) which is called from Java was trying to write to the file it was not able to write to the file unless I close the file in CICS first.
To fix it I REDEFINE the CICS file with SHAREOPTIONS (4 3). 4 Means that multiple partitions of the Mainframe can write to it. Fixing the problem
Below is a part of the definition code where you set the SHAREOPTION:
* $$ JOB JNM=DEFFI,CLASS=9,DISP=D,PRI=9
* $$ LST CLASS=X,DISP=H,PRI=2,REMOTE=0,USER=JAVI
// JOB DEFFI
// EXEC IDCAMS,SIZE=AUTO
DEFINE CLUSTER -
( -
NAME (FLIGHT.ORDERING.FLIGHTS) -
RECORDS (2000 1000) -
INDEXED -
KEYS (26 0) -
RECORDSIZE (128 128) -
SHAREOPTIONS (4 3) -
VOLUMES (SYSWKE) -
) -
.
.
.
I have followed the instructions provided in this website from content 5.3 and the code works fine.
My plan is to make a jar file (containing an interface/GUI), distribute that jar file to users, and then have them all read/write data should be from one excel file. When I place the excel file in local drive it works, but when I place the file in network folder/server, the java creates a problem:
java.exe has encountered a problem and needs to close. We are sorry
for the inconvenience.
or
Java Result: -1073741811
Any suggestions? Thank you
public class TestIntoExcel
{
public String s;
public double number;
public Date d;
public void display()throws ClassNotFoundException, SQLException
{
Class.forName("oracle.jdbc.driver.OracleDriver");
Connection writeConnection = DriverManager.getConnection
("jdbc:odbc:usersavedataODBC");
writeConnection.setReadOnly(false);
Statement writeStatement = writeConnection.createStatement();
writeStatement.executeUpdate("CREATE TABLE TEST_INSERT(COL1 INT,COL2 VARCHAR(10),COL3 DATE)");
PreparedStatement writeStatement2 =
writeConnection.prepareStatement("INSERT INTO TEST_INSERT(COL1,COL2,COL3)VALUES(?,?,?)");
for(int i = 0; i<3;i++)
{
writeStatement2.setDouble(1, i);
writeStatement2.setString(2, "Row" + i);
writeStatement2.setDate(3, new java.sql.Date(new Date().getTime()));
writeStatement2.execute();
}
String query = "select *from[TEST_INSERT]";
ResultSet rset = writeStatement.executeQuery(query);
//System.out.println(rset);
while(rset.next())
{
number = rset.getDouble("COL1");
s = rset.getString("COL2");
d = rset.getDate("COL3");
System.out.println(number+"\n"+s+"\n"+d);
}
writeStatement.close();
writeStatement2.close();
writeConnection.close();