Compare Two Strings Java Program

In this post, we will learn how to compare two Strings using a simple Java program. We can use the String class in-built method compareTo() method to compare strings. The method returns zero if the strings are equal.

The method signature is as follows:

public int compareTo(String anotherString)

Java program

package com.testingdocs.demo;

import java.util.Scanner;

public class SampleProgram {

 public static void main(String[] args) {
 //declare Two String variables
 String str,anotherStr;
 Scanner in = new Scanner(System.in);

 //prompt for input strings
 System.out.print("Enter String 1: ");
 str = in.nextLine();
 System.out.print("Enter String 2: ");
 anotherStr = in.nextLine();
 System.out.println("-----Program Output----");
 //compare the strings 
 if(str.compareTo(anotherStr) == 0)
 System.out.println("The Two Strings are Equal.");
 else
 System.out.println("The Two Strings are NOT Equal.");
 }
}

Screenshot

Sample Output

Save the program in the IDE. Run the program to verify the program output.

Right click and choose Run As >> Java Application

TestCase #1

Enter String 1: TestingDocs
Enter String 2: TestingDoc
—–Program Output—-
The Two Strings are NOT Equal.

TestCase #2

Enter String 1: TestingDocs.com
Enter String 2: TestingDocs.com
—–Program Output—-
The Two Strings are Equal.