Palindrome Program in Java

Teacher
Sateesh M
Category
Programaming
Review
- (3268 Reviws)

What is Palindrome

A palindrome is a word, phrase, number, or other sequence of characters that reads the same backward as forward. For example, the word "racecar" is a palindrome because it is spelled the same forwards and backwards. Other examples of palindromes include "level", "radar", and "rotator".

Palindromes are often used as a simple example to introduce the concept of string manipulation in computer programming. It is common to see palindromes used as test cases in programming exercises and interviews.

Palindromes have also been used as the basis for puzzles and brainteasers. For example, the famous palindrome "A man, a plan, a canal, Panama!" was used as the title of a popular book by author Martin Gardner.

Palindromes have a long history and have been found in literature and other forms of art for centuries. The word "palindrome" itself comes from the Greek words "palín" (πάλιν) and "drómos" (δρóμος), which mean "back" and "way", respectively.

Here is a simple Java program that checks if a given string is a palindrome (a word or phrase that reads the same backward as forward):


public class Palindrome {
    public static void main(String[] args) {
        String str = "racecar";
        boolean isPalindrome = true;

        for (int i = 0; i < str.length() / 2; i++) {
            if (str.charAt(i) != str.charAt(str.length() - i - 1)) {
                isPalindrome = false;
                break;
            }
        }

        if (isPalindrome) {
            System.out.println(str + " is a palindrome");
        } else {
            System.out.println(str + " is not a palindrome");
        }
    }
}

This program will output:
racecar is a palindrome
In this implementation, we use a for loop to iterate through the characters of the string and check if the characters at the corresponding positions are equal. If all the characters are equal, then the string is a palindrome. Otherwise, it is not a palindrome.
I hope this helps! Let me know if you have any questions.