java- jdbc with type 4 driver

My program code is-----

import java.sql.*; import java.lang.* ; import java .io.*; import java.util.*; import java.sql.Connection;
import java.sql.DatabaseMetaData;
import java.sql.DriverManager;
import java.sql.SQLException;
import oracle.jdbc.pool.OracleDataSource;

class Jdbcthin { public static void main(String arr[]) throws SQLException, ClassNotFoundException { try { Class.forName("oracle.jdbc.driver.OracleDriver");

        Connection con = DriverManager.getConnection("jdbc:oracle:thin@localhost:1521:XE", "system", "oracle");

    Statement stmt = con.createStatement();
        ResultSet rs = stmt.executeQuery("select*from Emp");
        System.out.println("Following Records are fetched");
        while(rs.next())
        {

System.out.println(rs.getInt(1) +"\t\t"+ rs.getString(2)+"\t\t"+ rs.getString(3)+"\t\t"+ rs.getInt(4)); } con.close(); } catch(Exception e) { System.out.println(e); } } }

It is giving an error like--

import java.sql.*; import java.lang.* ; import java .io.*; import java.util.*; import java.sql.Connection;
import java.sql.DatabaseMetaData;
import java.sql.DriverManager;
import java.sql.SQLException;
import oracle.jdbc.pool.OracleDataSource;

class Jdbcthin { public static void main(String arr[]) throws SQLException, ClassNotFoundException { try { Class.forName("oracle.jdbc.driver.OracleDriver");

        Connection con = DriverManager.getConnection("jdbc:oracle:thin@localhost:1521:XE", "system", "oracle");

    Statement stmt = con.createStatement();
        ResultSet rs = stmt.executeQuery("select*from Emp");
        System.out.println("Following Records are fetched");
        while(rs.next())
        {

System.out.println(rs.getInt(1) +"\t\t"+ rs.getString(2)+"\t\t"+ rs.getString(3)+"\t\t"+ rs.getInt(4)); } con.close(); } catch(Exception e) { System.out.println(e); } } }

It giving an error like this----

import java.sql.*; import java.lang.* ; import java .io.*; import java.util.*; import java.sql.Connection;
import java.sql.DatabaseMetaData;
import java.sql.DriverManager;
import java.sql.SQLException;
import oracle.jdbc.pool.OracleDataSource;

class Jdbcthin { public static void main(String arr[]) throws SQLException, ClassNotFoundException { try { Class.forName("oracle.jdbc.driver.OracleDriver");

        Connection con = DriverManager.getConnection("jdbc:oracle:thin@localhost:1521:XE", "system", "oracle");

    Statement stmt = con.createStatement();
        ResultSet rs = stmt.executeQuery("select*from Emp");
        System.out.println("Following Records are fetched");
        while(rs.next())
        {

System.out.println(rs.getInt(1) +"\t\t"+ rs.getString(2)+"\t\t"+ rs.getString(3)+"\t\t"+ rs.getInt(4)); } con.close(); } catch(Exception e) { System.out.println(e); } } }

it producing an error like---

java.sql.SqlException : Invalid Oracle URL Specified

Please tell me its solution..

Thanks..

July 13, 2011 at 2:30 PM

Follow these steps:

1) Import the following packages in your java file:***

import java.sql.*;
import oracle.jdbc.driver.*;
import oracle.sql.*;

2) Load and Register the JDBC driver:***

DriverManager.registerDriver(new oracle.jdbc.driver.OracleDriver());

or you can use

Class.forName("oracle.jdbc.driver.OracleDriver");

3) Connect to database:***

a) If you are using oracle oci driver,you have to use:

Connection conn = DriverManager.getConnection("jdbc:oracle:oci8:
@oracle.world", "root", "root");

where oracle.world is the TNSNAMES entry and root is the username and password.

b) If you are using oracle thin driver,you have to use:

Connection conn = DriverManager.getConnection ("jdbc:oracle:thin:@localhost:3306:roseindia",
"root", "root");

where localhost is the host,3306 is the port, roseindia is the database and root is the username and password.

4) Querying the database:**

a)create statement:

Statement st = conn.createStatement();

b)write query and execute the query:

ResultSet rs = st.executeQuery("SELECT * from student");

5) Close the statement,resultset and connection:**

rs.close();
st.close();
conn.close();

Try the following code:

import java.sql.*;
import oracle.sql.*;
import oracle.jdbc.driver.*;

public class OracleExample {
public static void main (String[] args) {
try{
DriverManager.registerDriver(new oracle.jdbc.driver.OracleDriver());
Connection conn = DriverManager.getConnection("jdbc:oracle:thin: @localhost:3306:Oracle", "rose", "rose");
Statement st = conn.createStatement();
ResultSet rs = sql_stmt.executeQuery("SELECT * from student");
String str = "";
while (rs.next())
{
System.out.println(rset.getInt(1)+" "+ rs.getString(2)+" "+ rset.getFloat(3)+"\n";
}
rs.close();
st.close();
conn.close();
}
catch(Exception e){}
}
}