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In ja*a Thread join method is used, so that main or parent thread can wait for its child thread to finish its execution and die. After that only main thread can executes its further statements. For example, In below thread program, main () method in Sample clas* is the main. AWESOME ANSWER FOR EXTENDING THREAD CLAS* VS IMPLEMENTING RUNNABLE INTERFACE IN JA*A. Very nice and concise answer with examples for technical interview question what difference between Extending Thread clas* and Implementing Runnable Interface in Ja*a. Before answering the differences lets have a brief note and tips that will help you answer the best. Examples of creating threads in ja*a using extending Thread clas* and Runnable Interface NOTE:… Answer to why method overriding is called runtime polymorphism in ja*a includes very simple code example with explanation, so you can understand easily. Do you think answer is difficult? In fact, it super simple. Read till end. You may read more about method overriding in ja*a with example.   “In Run time polymorphism methods get… Let’s see some examples where use of ja*a static methods are mandatory in the programs. Generally, we use static method where we want to call method without creating an object of the clas*. Here are examples where we cannot avoid using static methods in ja*a and are indispensable. NOTE: Generally, this question is asked to… Answer to why we need double check locking in singleton clas* in Ja*a with thread program example.   Let’s understand first what does double checking means?   Consider the method getInstance() of below singleton clas*. You will see there are two if conditions to check if Chandan Kumar Yadav a fresher software engineer shares his success stories, pains and efforts during job search. He got 100+ rejections in IT industries but never give up and finally he got a great success. He set an example that people should never give up and have great Got a job and really feel great as a software engineer. Shared my failure to success story!!! I’m, thankful to Rakesh Singh Sir, the