java.lang.Double.equals() java.lang.Double.doubleValue() java.lang.Double.floatValue() java.lang.Double.equals() package com.codingdict; import java.lang.*; public class DoubleDemo { public static void main(String[] args) { // compares this object against the specified object 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("5"); System.out.print(obj1 + " = " + obj2); System.out.println(" ? " + obj1.equals(obj2)); } } java.lang.Double.doubleValue() java.lang.Double.floatValue()