How to connect to Oracle using JDBC thin client

// Hello this is a java program to connect to oracle database connection string and sql query  is //customize you have to set your own value.
//after you compile this code run in the command line with following sysntax
// you can ignore lpad and rpad function it is only given to print data in well tabed format
// java -cp "path\jdbcjarfilename" classfilename
//  i am giving the ojdbc5.jar link here : ojdbc5.jar

import java.sql.*;
import java.io.*;
class OracleCon
{

public static void main(String[] args)
{
ConnectToDB();
}
public static void ConnectToDB()
{
try{
Class.forName("oracle.jdbc.driver.OracleDriver");
}
catch(ClassNotFoundException e)
{
System.out.println("\nOracle JDBC driver not found");
e.printStackTrace();
return;
}
System.out.print("\nOracle JDBC Driver Registered");
Connection connection=null;
Statement stmt=null;
try
{
connection = DriverManager.getConnection("jdbc:oracle:thin:@192.168.171.166:1521:orcl","payroll",
             "payroll");
stmt = connection.createStatement();
ResultSet rs = stmt.executeQuery("select emp_code,emp_name,date_of_birth from employee_master");
File file = new File("/sub/aaa.csv");
if(!file.exists())
file.createNewFile();
FileWriter fw = new FileWriter(file.getAbsoluteFile());
BufferedWriter bw = new BufferedWriter(fw);
System.out.print("\n" + lpad("Emp Code",10) + "|" + lpad("Emp Name",50) + "|" + lpad("Date of Birth",20));
while(rs.next())
{
System.out.print("\n" + lpad(rs.getString("emp_code"),10) + "|" + lpad(rs.getString("emp_name"),50) + "|" + lpad(rs.getString("date_of_birth"),20));
bw.write("\n" + lpad(rs.getString("emp_code"),10) + "|" + lpad(rs.getString("emp_name"),50) + "|" + lpad(rs.getString("date_of_birth"),20));
}bw.close();
rs.close();
connection.close();
}
catch(SQLException e)
{
System.out.print("\nConnection Failed! Check output console");
e.printStackTrace();
return;
}
catch(IOException e)
{
e.printStackTrace();
return;
}
if(connection!=null)
System.out.print("\nSuccess");
else
{
System.out.print("\nFailed");
return;
}
}
public static String lpad(String s,int l)
{
String gap="";
for(int i=s.length();i<=l;i++)
gap+=" ";
return gap + s;
}

public static String rpad(String s,int l)
{
String gap="";
for(int i=s.length();i<=l;i++)
gap+=" ";
return s + gap;
}
}