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Connect derby DB to Java

I wanted to connect DB to Java application in Intellij.
I set the classpath correctly, so that javac from cmd is working correct.
I have also downloaded all the jar files needed as a libary, but I still get java.sql.SQLException: No suitable driver found for jdbc:derby
What can be the problem?
public static void main(String[] args) {
try {
Class.forName("org.apache.derby.jdbc.ClientDriver");
} catch(java.lang.ClassNotFoundException e) {
e.printStackTrace();
}
final String DATABASE_URL = "jdbc:derby:myDB;create=true;user=user;password=pass";
try (
Connection connection = DriverManager.getConnection(DATABASE_URL, "user", "pass");
)
{
// ...
}
catch (SQLException sqlException)
{
sqlException.printStackTrace();
}
}

You can try if org.apache.derby.jdbc.EmbeddedDriver works. And it seems your connection url is wrong.
final String DATABASE_URL = "jdbc:derby://localhost:1527/myDB;create=true;user=user;password=pass";
Connection connection = null;
try{
Class.forName("org.apache.derby.jdbc.EmbeddedDriver");
connection = DriverManager.getConnection(DATABASE_URL );
}
catch (Exception e)
{
e.printStackTrace();
}

Connect with DB2 from Java

I try to connect to db2 from java, here is my code:
public class Db2Connection {
public static void main(String[] args) {
String jdbcClassName="com.ibm.db2.jcc.DB2Driver";
String url="jdbc:db2://localhost:50001/TEST";
String user="user1";
String password="pass";
System.out.println("before try-catch");
Connection connection = null;
try {
System.out.println("try");
//Load class into memory
Class.forName(jdbcClassName);
//Establish connection
System.out.println("before conn");
connection = DriverManager.getConnection(url, user, password);
System.out.println("after conn");
} catch (ClassNotFoundException e) {
e.printStackTrace();
} catch (SQLException e) {
e.printStackTrace();
}finally{
if(connection!=null){
System.out.println("Connected successfully.");
try {
connection.close();
} catch (SQLException e) {
e.printStackTrace();
}
}
}
}
}
To be clear, I add db2jcc.jar to my project and run code with valid url. Program cannot jump over line:
connection = DriverManager.getConnection(url, user, password);
I receive no errors or exception, application just not execute. I have no idea how deal with it, can anyone help me?

Try, after removing colon like :
String url="jdbc:db2//localhost:50001/TEST";

SQLite Java JDBC Insert

Following is my Java code. In linux, it is working fine but in Windows I'm unable to insert data into the database on local disk. In NetBeans get it all right but .jar file not. JDBC driver see be good.
Connecting to database:
public static Connection connectToDb() {
try {
Connection connection = null;
DriverManager.registerDriver(new org.sqlite.JDBC());
//LINUX PATH
if (OSDetector.isLinux()) {
connection = DriverManager.getConnection("jdbc:sqlite:/home/" + userNameLinux + "/PDFMalwareDataAnalyser/DatabaseSQLite/database.db", NAME, PASSWORD);
//WINDOWS PATH
} else {
connection = DriverManager.getConnection("jdbc:sqlite:C:\\PDFMalwareDataAnalyser\\DatabaseSQLite\\database.db", NAME, PASSWORD);
}
connection.setAutoCommit(true);
if (connection != null) {
System.out.println("Otvorená.");
}
return connection;
} catch (SQLException e) {
System.err.println(e.getClass().getName() + e.getMessage());
// System.exit(0);
}
return null;
}
Insertion:
public void insertDataToDatabase(int idReport) throws SQLException {
connection = new SQLiteJDBC().connectToDb();
PreparedStatement insertCommunication = connection.prepareStatement("insert into table_communication values(?,?);");
insertCommunication.setString(2, communicationsFinal.toString());
try {
insertCommunication.executeUpdate();
} catch (Exception e) {
e.printStackTrace();
}
insertCommunication.close();
connection.close();
System.out.println("1. --- Insert do tabuľky TABLE_COMMUNICATION OK ---");
}

Try this:
connection = DriverManager.getConnection("jdbc:sqlite:C:/PDFMalwareDataAnalyser/DatabaseSQLite/database.db")

Android JDBC Conn NullPointer

So I´ve been struggling with the JDBC driver to get my MySQL database running in my Android application. It´s a simple application that I have to make for school but I keep getting NullPointers at the Connection class.
I tested the connection in a regular Java project in Netbeans and that works fine.
Here is my code:
private Connection conn;
public data_Administration dataAdministration = data_Administration.getInstance();
public data_SQL()
{
this.connectToDatabase();
}
protected void connectToDatabase()
{
try
{
try
{
Class.forName("com.mysql.jdbc.Driver");
}
catch(Exception ee)
{
}
}
catch(Exception eee)
{
}
try
{
conn = DriverManager.getConnection("jdbc:mysql://db4free.net:3306/", ****, ****);
}
catch (SQLException ex)
{
}
}

JDBC SQL Server Exception

I’m trying to connect a Java program with MS SQL SERVER 2012 but Java throws the exception: java.lang.ClassNotFoundException.
I understand that the problem often is a result of that the CLASSPATH is not set up correctly for the driver. I have followed the directions from Oracle to add a CLASSPATH, but I still get the same exception. When I type “echo %CLASSPATH%" in the command prompt I get a correct response. What have I missed?
Code:
import java.sql.*;
public class JDBCTest {
public static void main(String[ ] args) throws SQLException {
try {
Class.forName("com.microsoft.sqlserver.jdbc.SQLServerDriver");
} catch(Exception e) {
System.out.println("Can't find database driver: " + e);
}
}
}

The runtime environment for your application may not contain the appropriate jar file.
The path that you have checked is only for your console environment. The application classpath is different from this.

Try this
public class connectURL {
public static void main(String[] args) {
// Create a variable for the connection string.
String Connectionurl="jdbc:sqlserver://localhost:1433;DatabaseName=YourDBName;user=UserName;Password=YourPassword"
// Declare the JDBC objects.
Connection con = null;
Statement stmt = null;
ResultSet rs = null;
try {
// Establish the connection.
Class.forName("com.microsoft.sqlserver.jdbc.SQLServerDriver");
con = DriverManager.getConnection(connectionUrl);
String SQL = "";
stmt = con.createStatement();
rs = stmt.executeQuery(SQL);
while (rs.next()) {
....
}
}
catch (Exception e) {
e.printStackTrace();
}
finally {
if (rs != null) try { rs.close(); } catch(Exception e) {}
if (stmt != null) try { stmt.close(); } catch(Exception e) {}
if (con != null) try { con.close(); } catch(Exception e) {}
}
}
}
make sure that you download the driver jar file and put it at the right place

If Class.forName fails it is a problem of classpath.
try this code to check your classpath:
String classPath = System.getProperty("java.class.path");
String userDir = System.getProperty("user.dir");
System.out.println("Working Directory:");
System.out.println("\t"+userDir);
System.out.println("Classpath:");
String[] paths = classPath.split(";");
for (String path : paths) {
File pathFile = new File(path);
String check = pathFile.exists()?"OK ":"NOT-FOUND ";
System.out.println("\t"+check+path);
}

First of all download sqljdbc4.jar from here
Put this .jar in Your /WEB-INF/lib folder. (Check if this file appears from your eclipse's lib if not then Refresh Your Project)
And then run Your Project.