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Java Program to find whether a given string is palindrome or not

import javax.swing.*;

class palindrome{
    public static void main(String args[]){
        String wd;
        int i, len;
        boolean ispal;

        wd = JOptionPane.showInputDialog("Enter a Word:");
        len = wd.length();
       
        i=0;
        ispal=true;
        for(;i<=len;){
            if(wd.charAt(i) == wd.charAt(len-1)){
                i++;
                len--;
                }
            else{
                ispal = false;
                break;
            }
        }
        if(ispal==true)
            System.out.println("The String " + wd + " is Palindrome.");
        else
            System.out.println("The String " + wd + " is not Palindrome.");
    }
}

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