Java Palindrome Program
This Java palindrome program lets the user enter any positive integer and then it will check whether the number is a palindrome or not using the while loop.
In this article, I have explained the list of all alphabet pattern programs in c programming language. Here, I have used the while loop to iterate each and every character of the string and checked for palindrome string.
A Java program for checking if a given string is a palindrome or not. A palindrome is a word that reads the same backward as forward. Examples of palindromes are madam, civic, radar, level, rotator, and kayak.
import java.util.Scanner;
public class Palindrome {
public static void main(String[] args) {
String original, reverse = “”; // Objects of String class
Scanner in = new Scanner(System.in);
System.out.println(“Enter a string to check if it is a palindrome”);
original = in.nextLine();
int length = original.length();
for (int i = length – 1; i >= 0; i–)
reverse = reverse + original.charAt(i);
if (original.equals(reverse))
System.out.println(“Entered string is a palindrome.”);
else
System.out.println(“Entered string is not a palindrome.”);
}
import java.util.*;
public class PalindromeExample
{
public static void main(String[] args)
{
System.out.println(“Please Enter the String for check:”);
Scanner in = new Scanner(System.in);
String inputString = in.nextLine();
boolean result = isPalindrome(inputString);
if (result) {
System.out.println(“Given String is a palindrome”);
} else {
System.out.println(“Given String is not a palindrome”);
}
}
public static boolean isPalindrome(String input) { char[] try1= input.toCharArray(); int i1 = 0; int i2 = try1.length – 1; while (i2 > i1) { if (try1[i1] != try1[i2]) { return false; } ++i1; –i2; } return true; } }
import java.util.*;
class PalindromeI
{
public static void main(String args[])
{
String a, b = “”;
Scanner s = new Scanner(System.in);
System.out.print(“Enter the string you want to check:”);
a = s.nextLine();
int n = a.length();
for(int i = n – 1; i >= 0; i–)
{
b = b + a.charAt(i);
}
if(a.equalsIgnoreCase(b))
{
System.out.println(“The string is palindrome.”);
}
else
{
System.out.println(“The string is not palindrome.”);*
import java.io.*;
public class Palindrome
{
public static void main(String args[])throws IOException
{
BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
String str, rev = “”;
System.out.println(“Enter a string:”);
str = br.readLine();
int length = str.length();
for (int i = length – 1; i >= 0; i–)
rev = rev + str.charAt(i);
if (str.equals(rev))
System.out.println(str+” is a palindrome”);
else
System.out.println(str+” is not a palindrome”);
}
}
import java.io.*;
class palindrome {
public static void main(String args[]) throws IOException {
InputStreamReader isr = new InputStreamReader(System.in);
BufferedReader br = new BufferedReader(isr);
System.out.print(“Enter the string: “);
String s = br.readLine();
int size = s.length();
for (int i = 0; i < size / 2; ++i) { if (s.charAt(i) != s.charAt(size - 1 - i)) { System.out.println("Not a palindrome."); return; } } System.out.println("Palindrome."); } } import java.util.*; class Palindrome { public static void main(String args[]) { Scanner in=new Scanner(System.in); System.out.println("Enter a string"); original=in.nextLine(); int length = original.length(); for ( int i = length - 1; i >= 0; i– )
rev = rev + original.charAt(i);
if (original.equals(rev))
System.out.println(“Entered string is a palindrome.”);
else
System.out.println(“Entered string is not a palindrome.”); } }
