Write a Java Program to Check String is palindrome or not using String Buffer

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Steps: :

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• Get the input String

• Find reverse of the given string

• Match the original string with reverse string, If both are equal, then given string is Palindrome, Otherwise Not.

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Procedure : :

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• A string str is taken as an input to the program.I have used Scanner class to read the string from keyboard.

• Create a String Buffer object s1 for the str because the reverse() method is in String Buffer.

• Then, create a String Buffer object s2 for the s1.

• Call the reverse method i.e s1.reverse() reverse the string associated with StringBuffer object.
• Call the compareTo() method to compare input string and the resultant reverse string for checking the given string is palindrome or not.

Palindrome: :

• radar, madam, mom, dad , etc.

Not Palindrome: :

• Codezclub, java, road, car,  etc.

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The following code accepts a string, and checks whether the given string is Palindrome or not using String Buffer.The Program below is successfully compiled and run on the Windows System to produce desired output.

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SOURCE CODE : :

import java.util.Scanner;

public class String_buffer
{
public static void main(String[] args)
{
    
 Scanner sc = new Scanner(System.in);
 System.out.print("Enter string which u want to check : ");
 String str=sc.nextLine(); 
 
StringBuffer s1=new StringBuffer(str);
StringBuffer s2=new StringBuffer(s1);

s1.reverse();

System.out.println("Given String is : "+s2);

System.out.println("Reverse String is : "+s1);

if(String.valueOf(s1).compareTo(String.valueOf(s2))==0)
System.out.println(s2 + " is Palindrome");
else
System.out.println(s2 + " is Not Palindrome");

}
}

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OUTPUT : :

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Enter string which u want to check : madam
Given String is : madam
Reverse String is : madam
madam is Palindrome

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