Core java

In this tutorial, we are going to see Multithreading interview questions with answers. Here is list of Java Multithreading interview questions. [toc] Java multithreading interview questions 1. What is thread in java? Answer: Thread can be called as light weight process. It can be referred as smallest part of process which can be executed concurrently […]

In this post, we are going to see difference between notify and notifyall in java. notify(): When you call notify method on the object, it wakes one of thread waiting for that object. So if multiple threads are waiting for an object, it will wake of one of them. Now you must be wondering which […]

In this tutorial, we are going to see differences between process and thread in java. If you are working on multithreading in java, it is good to know differences between process and thread. How multithreading can improve performance by executing code in parallel. Process vs Thread: The process can be referred as program in execution […]

In this tutorial, we are going to see difference between throw and throws in java. throw: throw keyword is used to throw any custom exception or predefine exception. For example: Let’s say you want to throw invalidAgeException when employee age is less than 18. Create a Employee class as below. package org.arpit.java2blog; public class Employee […]

Serialization is one of most important concept in java. If you are going to face core java interview, then you might be asked some questions from Serialization. Java Serialization Tutorial: Serialization in java Java Serialization interview questions and answers serialversionuid in java serialization externalizable in java Transient keyword in java Difference between Serializable and Externalizable […]

In this tutorial,  we are going to see differences between Serializable and Externalizable interface in Java. Java Serialization Tutorial: Serialization in java Java Serialization interview questions and answers serialversionuid in java serialization externalizable in java Transient keyword in java Difference between Serializable and Externalizable in Java Before understanding difference, let me provide a short note on Serializable […]

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In this tutorial, we will see how to check if number is power of two. There are many approaches to check if number is power of two or not. Approach 1: It is very easy and straight forward approach. Run a while loop which checks for condition if n is even number (n%2==0). If n is […]

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