• Source 
    1. import java.util.*;
    2. import java.lang.*;
    3. import java.io.*;
    4.  
    5. class MyString {
    6.  
    7. 	String string = null;
    8.  
    9. 	public MyString(String string) {
    10. 		this.string = string;
    11. 	}
    12.  
    13. 	@Override public boolean equals(Object o) {
    14. 	    if (!(o instanceof MyString))
    15. 	    	return false;
    16. 	    MyString str = (MyString) o;
    17. 	    return str.string.equals(string);
    18. 	}
    19.  
    20. 	public static void main (String[] args) throws java.lang.Exception {
    21. 		MyString a = new MyString("hello");
    22. 		MyString b = new MyString("hello");
    23. 		System.out.println(a.equals(b));
    24. 	}
    25. }