2. Program in Java for String handling which performs the following: i) Checks the capacity of StringBuffer objects. ii) Reverses the contents of a string given on console and converts the resultant string in upper case. iii) Reads a string from console and appends it to the resultant string of ii.

/*Write a program in Java for String handling which performs the following: i) Checks the capacity of StringBuffer objects. ii) Reverses the contents of a string given on console and converts the resultant       string in upper case. iii) Reads a string from console and appends it to the resultant string of ii.*/

// StringHandler.java

import java.io.*;
class StringHandler
  {
    public static void main(String s[]) throws IOException
      {
BufferedReader br=new BufferedReader(new InputStreamReader(System.in));
String s1,s2,s3,s4,s5;
int i,l;
s2=" ";
System.out.println("\nEnter the string : \t\t\t");
System.out.println("\n=======================\t");
s1=br.readLine();
System.out.println("\nEntered string is : \t\t\t "+s1);
System.out.println("\nlength of the string is : \t\t "+s1.length());
StringBuffer sb=new StringBuffer(s1);
System.out.println("\nCapacity of string buffer : \t\t "+sb.capacity());
l=s1.length();
if(l==0)
 System.out.println("\nString is empty cannot be reversed");
else
 {
    for(i=l-1;i>=0;i--)
{
 s2=s2+s1.charAt(i);
}
    System.out.println("\nThe reversed string is : \t\t"+s2);
    s3=s2.toUpperCase();
        System.out.println("\nUpper case of reverse string is : \t"+s3);
      System.out.println("\nEnter a new string : \t");
    System.out.println("\n=======================\t");
    s4=br.readLine();
    System.out.println("\nThe entered new string is : \t\t "+s4);
    StringBuffer sb1=new StringBuffer(s4);
    s5=sb1.append(s3).toString();
    System.out.println("\nThe appended string is : \t\t "+s5);

 }
      }
  }