34.Program for convert string in uppercase or lowercase in java

import java.io.*;

class buffer1

{

            public static void main(String args[])

            {

                        try

                        {

                                                InputStreamReader ir=new InputStreamReader(System.in);

                                                BufferedReader in=new BufferedReader(ir);

                                                System.out.println("Enter String:");

                                                String s=in.readLine();

                                                System.out.println("String:"+s);

                                                System.out.println("Length:"+s.length());

                                                System.out.println("Upper String:"+s.toUpperCase());

                                                System.out.println("Lower case:"+s.toLowerCase());

                                                System.out.println(s.replace('i','t'));

                        }

                        catch(Exception e)

                        {

                                    System.out.println("Exception:"+e);

                        }

            }

}