Write a Java program to practice using String Buffer class and its methods.

Write a Java program to practice using String Buffer class and its methods.

Program Code:

import java.lang.String;

class stringbufferdemo

{

public static void main(String arg[])

{

StringBuffer sb=new StringBuffer("This is my college");

System.out.println("This string sb is : " +sb);

System.out.println("The length of the string sb is : " +sb.length());

System.out.println("The capacity of the string sb is : " +sb.capacity());

System.out.println("The character at an index of 6 is : " +sb.charAt(6));

sb.setCharAt(3,'x');

System.out.println("After setting char x at position 3 : " +sb);

System.out.println("After appending : " +sb.append(" in gulbarga "));

System.out.println("After inserting : " +sb.insert(19,"gpt "));

System.out.println("After deleting : " +sb.delete(19,22));

}

}

Output:

This string sb is : This is my college

The length of the string sb is : 18

The capacity of the string sb is : 34

The character at an index of 6 is : s

After setting char x at position 3 : Thix is my college

After appending : Thix is my college in gulbarga

After inserting : Thix is my college gpt in gulbarga

After deleting : Thix is my college in gulbarga