java find the error1

package com.test.dao;

import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.SQLException;

public class DBConnections {
public static String userName="";
public static String password="";
public static String URL="jdbc:oracle:thin:@172.24.137.30:1521:ora10g";
public static String driver="oracle.jdbc.OracleDriver";
public static Connection conObj=null;
public static Connection setConnection() throws ClassNotFoundException, SQLException
{
    Class.forName(driver);
    conObj=DriverManager.getConnection(URL,userName,password);
    return conObj;


}


}