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DeviceDriver connection statement not executing

I'm new to setting up connections to mysql servers, I have already defined a database, and set up tables within it, but I am having issues with connecting to it.
It seems that it is not executing the statement at all, and is throwing an error every time I try it.
import java.sql.*;
public class initDB {
public static void main(String[] args) throws Exception{
Connection dbcon = null;
try {
System.out.println("tried try statement");
Class.forName("com.mysql.jdbc.Driver");
System.out.println("tried driver");
dbcon = DriverManager.getConnection(
"jdbc:mysql://localhost:3306/raindatabase", "user", "loginsystem"
);
System.out.println("tried to get connection");
} catch (Exception e){
e.printStackTrace();
}
}
}
It throws this error message:
java.lang.ClassNotFoundException: com.mysql.jdbc.Driver
at java.base/jdk.internal.loader.BuiltinClassLoader.loadClass(BuiltinClassLoader.java:582)
at java.base/jdk.internal.loader.ClassLoaders$AppClassLoader.loadClass(ClassLoaders.java:190)
at java.base/java.lang.ClassLoader.loadClass(ClassLoader.java:499)
at java.base/java.lang.Class.forName0(Native Method)
at java.base/java.lang.Class.forName(Class.java:291)
at initDB.main(initDB.java:10)

MySQL connector JAR should be in your class path.
This tutorial will help to understand JDBC connections https://dev.mysql.com/doc/connector-j/5.1/en/connector-j-usagenotes-connect-drivermanager.html
You can download connector from here https://dev.mysql.com/doc/connector-j/5.1/en/connector-j-installing.html
In IntelliJ, you can add jar to library. File -> Project Structure -> Libraries -> {Add your jar}
or, To compile/run from command:
Compile:
javac -classpath PATH_TO_MYSQL_CONNRECTOR_JAR;%CLASSPATH% YOUR_JAVA_FILE.java
Run
java -classpath PATH_TO_MYSQL_CONNRECTOR_JAR;%CLASSPATH% YOUR_JAVA_CLASS_FILE_NAME

Java Program compile and run in command prompt successfully but not in myeclips?

I'm learning jdbc and working with Oracle database by writing this simple code. The IDE i'm using is MyEclips. But the problem is when I compile and run this program in command prompt it works properly but when I try to compile and run this program in my IDE i.e. MyEclips it through an error message:
java.lang.ClassNotFoundException: oracle.jdbc.driver.OracleDriver
import java.sql.*;
class OracleCon{
public static void main(String args[])
{
try
{
Class.forName("oracle.jdbc.driver.OracleDriver");
Connection con = null;
String URL = "jdbc:oracle:thin:#localhost:1521:xe";
String UN = "HR";
String PASS = "12345";
con = DriverManager.getConnection(URL,UN,PASS);
Statement stmt = con.createStatement();
String sql = "SELECT * FROM EMPLOYEES";
ResultSet rs = stmt.executeQuery(sql);
while (rs.next())
{
System.out.println(rs.getString(1)+" "+rs.getString(2)+" "+rs.getString(3));
}
}
catch (Exception e)
{
System.out.println(e);
}
}
}
I also set the class path in Environment variable.Environment variable snippet

Verify that the name of the requested class is correct and that the appropriate .jar file exists in your classpath. If not, you must explicitly add it to your application’s classpath.
In case the specified .jar file exists in your classpath then, your application’s classpath is getting overriden and you must find the exact classpath used by your application.
In case the exception is caused by a third party class, you must identify the class that throws the exception and then, add the missing .jar files in your classpath.

Creating a java program which getting SQLite data and Insert in Oracle DB

I've just started my adventure with programming in SQL using JAVA.
I have Linux and Oracle Database on VirtualBox Machine.
My project is about situation, when a client give me a SQLite3 Database and I have to convert it to Oracle Database.
I've read some code but it gives error
Code:
CREATE OR REPLACE AND RESOLVE JAVA SOURCE NAMED "Move" AS
import java.sql.*;
import java.io.*;
public class getting {
public static void doIt() throws Exception{
Connection conn;
ResultSet rs;
Statement stat;
try{
Class.forName("org.sqlite.JDBC");
conn =
DriverManager.getConnection("jdbc:sqlite://127.0.0.1/media/sf_SHARE/baza.db");
} catch (SQLException e){
throw new RuntimeException(e);
}
try{
stat = conn.createStatement();
try{
rs = stat.executeQuery("SELECT * from entities");
while(rs.next()){
String w1= rs.getString("ID");
String w2 = rs.getString("TEXT");
System.out.println(w1+w2);
}
}finally{}
}finally{}
{try {rs.close();
}catch (Exception ignore){}
try {conn.close();
}catch (Exception ignore){}
try {stat.close();
}catch (Exception ignore){}
}
}
}
/
create or replace function Move return varchar2 as
language java name 'getting.doIt() return java.language.String';
/
select Move from dual;
I've got a error:
java.lang.ClassNotFoundException: org/sqlite/JDBC
Is connection in DriverManager.getConnection() is good?
Any ideas what I did wrong?
Cheers
najdzion

You have to download JDBC driver from here: https://bitbucket.org/xerial/sqlite-jdbc/downloads and import downloaded JAR to your project.
Also, as good practice, don't store connections as hard-coded strings.
If you are using maven, check your dependencies:
<dependency>
<groupId>org.xerial</groupId>
<artifactId>sqlite-jdbc</artifactId>
<version>3.8.11.2</version>
</dependency>
Add your jar co Classpath:
> javac Example.java
> java -classpath ".;sqlite-jdbc-(VERSION).jar" Example # in Windows
or
> java -classpath ".:sqlite-jdbc-(VERSION).jar" Example # in Mac or Linux
or you can do it via your IDE.

i am trying to connect my jdbc program oracle database 10g and using window 8

my code is
import java.sql.*;
public class SelectTest{
public static void main(String arr[]) {
try {
class.forName("sun.jdbc.odbc.JdbcOdbcDriver");
Connection con=DriverManager.getConnection("jdbc:odbc:myDb","system","oracle");
Statement stmt=con.createStatement();
ResultSet rset=stmt.executeQuery("select * from emp");
while(rset.next()) {
System.out.print(rset.getInt(1)+"\t"+rset.getString(2)+"\t"+
rset.getString(3)+"\t"+rset.getInt(4));
}//while loop
con.close();
}//try
catch(Exception ex) {
System.out.print(ex);
}//catch
}//main
}//class
And i set classpath of the oracle DB in system environment as
C:\oraclexe\app\oracle\product\10.2.0\server\jdbc\lib\ojdbc14.jar;.
And i set path for jre in user variables as
C:\Program Files\Java\jdk1.7.0_17\bin;.;
i am not getting why my program is giving the error:
Error: this program is not recognised as internal or external command.

You probably won't have jre and jdk installed. If java -version has the same result install these.

Couldn't make mysql connector j work

I've set the classpath envoirenment but still get an error "Exception:com.mysql.jdbc.Driver"
Do you have any idea what might be wrong?
Here is my test code:
import java.sql.*;
public class JdbcExample1 {
public static void main(String args[]) {
Connection con = null;
try {
Class.forName("com.mysql.jdbc.Driver").newInstance();
con = DriverManager.getConnection("jdbc:mysql:///test", "root", "secret");
if(!con.isClosed())
System.out.println("Successfully connected to MySQL server...");
} catch(Exception e) {
System.err.println("Exception: " + e.getMessage());
} finally {
try {
if(con != null)
con.close();
} catch(SQLException e) {}
}
}
}

Exception:com.mysql.jdbc.Driver
Is most probably not the full error message. I guess it's a ClassNotFoundException and you simply do not have the MySQL JDBC driver as part of your classpath.
When running your program, you need to list the driver as well
java -cp .;mysql-connector-java-5.1.7-bin.jar JdbcExample1
(This assumes JdbcExample1.class and the .jar file are in the current directory)
I've set the classpath envoirenment
Setting the CLASSPATH environment variable is not necessary anymore (actually it never has been necessary). As a matter of fact it creates more problems than it solves.
Use the above syntax to supply the path to your driver and run your program

As horse says, I'm pretty sure it's a 'ClassNotFoundException'.
To be sure add "e.printStackTrace();" in your catch-block.
Always best to get a stack trace.