MainClass.java Source code

Introduction

Here is the source code for MainClass.java

Source

class MainClass {
    public static void main(String[] args) {
        String s1 = "abc";
        String s2 = "abc";
        String s3 = "def";

        if (s1 == s2)
            System.out.println("s1 == s2");

        if (s1 != s3)
            System.out.println("s1 != s3");

        if (s2 != s3)
            System.out.println("s2 != s3");

        String s4 = s1.toUpperCase();

        if (s4 != s1)
            System.out.println("s4 != s1");

        System.out.println("s1 = " + s1);
        System.out.println("s4 = " + s4);
    }
}