Java code to compare the strings using equals(), compareTo() and == operator

// Comparing Strings with equals() and compareTo() 
// methods in Java

public class Main {
    public static void main(String[] args) {
        //strings
        String str1 = new String("ABC");
        String str2 = new String("PQR");

        //comparing strings using equals() method
        System.out.println(str1.equals(str2));
        System.out.println(str1.equals(str1));

        //comparing strings using == operator 
        System.out.println(str1 == str1);
        System.out.println(str1 == str2);

        //comparing strings using compareTo() method
        System.out.println(str1.compareTo(str1));
        System.out.println(str1.compareTo(str2));
    }
}

Output

false
true
true
false
0
-15