Top 25 Most Frequently Asked Interview Core Java Interview Questions And Answers We are sharing 25 java interview questions , these questions are frequently asked by the recruiters.Java questions can be asked from any core java topic . So we try our best to provide you the java interview questions and answers for experienced which should be in your to do list before facing java questions in technical interview . Top 25 Java Interview Questions : 1. Which two method you need to implement for key Object in HashMap ? In order to use any object as Key in HashMap, it must implements equals and hashcode method in Java. Read How HashMap works in Java for detailed explanation on how equals and hashcode method is used to put and get object from HashMap. 2. What is immutable object? Can you write immutable object? Immutable classes are Java classes whose objects can not be modified once created. Any modification in Immutable object result in new object. For example is St
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