Double Literally Result False [duplicate]

问题:

This question already has an answer here:

• Why is 128==128 false but 127==127 is true when comparing Integer wrappers in Java? 6 answers
• How to properly compare two Integers in Java? 8 answers

My Question about Wrapper classes. Case 1: I'm Declaring two Integer variables and assigning same values 127, and i'm printing both hashCode. It's Generated same hashCode and result will be printed true. But In Case 2: Generated the Same hashCode but result will be printing false. Please Could you relate. Why Printing a false result.

package com.oca.test.exam;

public class TestCasesIntegerAndDouble {

    public static void main(String[] args) {

        //Case 1:
        Integer i1 = 127;
        Integer i2 = 127;

        System.out.println(i1.hashCode()); //127
        System.out.println(i2.hashCode()); //127
        System.out.println(i1 == i2); //true

        //Case 2:
        Double d1 = 127.0;
        Double d2 = 127.0;

        System.out.println(d1.hashCode());//1080016896
        System.out.println(d2.hashCode());//1080016896
        System.out.println(d1 == d2); //false
    }
}