Java program that checks whether a given string is a palindrome or not

In this article we will learn to implement a Java program that checks whether a given string is a palindrome or not. A Java program is provided below that reads a string, checks whether it is a palindrome or not.

Program is as follows:

import java.util.*;
class Palindrome
{
	void isPalindrome(String str)
	{
		String org, rev;
		StringBuffer buff1, buff2;
		buff1 = new StringBuffer(str);
		org = new String(buff1);
		buff2 = buff1.reverse();
		rev = new String(buff2);
		if(org.equals(rev))
		{
			System.out.println("Entered string is a palindrome");
		}
		else
		{
			System.out.println("Entered string is not a palindrome");
		}
	}
}
class Driver
{
	public static void main(String[] args)
	{
		Scanner s = new Scanner(System.in);
		System.out.print("Enter a string: ");
		String str = s.next();
		Palindrome p = new Palindrome();
		p.isPalindrome(str);
	}
}

Input and output for the above program is as follows:

Enter a string: madam
Entered string is a palindrome

Suryateja Pericherla

Suryateja Pericherla, at present is a Research Scholar (full-time Ph.D.) in the Dept. of Computer Science & Systems Engineering at Andhra University, Visakhapatnam. Previously worked as an Associate Professor in the Dept. of CSE at Vishnu Institute of Technology, India.

He has 11+ years of teaching experience and is an individual researcher whose research interests are Cloud Computing, Internet of Things, Computer Security, Network Security and Blockchain.

He is a member of professional societies like IEEE, ACM, CSI and ISCA. He published several research papers which are indexed by SCIE, WoS, Scopus, Springer and others.