Java tutorial
public class Main { public static void main(String[] args) { Double obj1 = new Double("2"); Double obj2 = new Double("2.0"); System.out.print(obj1 + " = " + obj2); System.out.println(" ? " + obj1.equals(obj2)); obj1 = new Double("3"); obj2 = new Double("4"); System.out.print(obj1 + " = " + obj2); System.out.println(" ? " + obj1.equals(obj2)); } }