Java HashMap return value not confirming with my understanding of equals and hashcode

Question

The output of the following code sample is:

{1--e=e2, 2--e1=e1}

package com.sid.practice;

import java.util.HashMap;
import         


        

Answer 1

The Javadocs for HashMap state for the put method:

Associates the specified value with the specified key in this map. If the map previously contained a mapping for the key, the old value is replaced.

Hence, the key is not overwritten, only the value.