Java Questions And Answers For Interview 1.What is Singleton? is it better to make whole method synchronized or only critical section synchronized ? ANSWER: Singleton in Java is a class with just one instance in whole Java application, for example java.lang.Runtime is a Singleton class. Creating Singleton was tricky prior Java 4 but once Java […]
Questions And Answers For Java Interview 1.What is the difference between a constructor and a method? ANSWER: A constructor is a member function of a class that is used to create objects of that class. It has the same name as the class itself, has no return type, and is invoked using the new operator. […]
Java Interview Questions For Freshers 1.What is the difference between an Interface and an Abstract class? ANSWER: Abstract class can have instance methods that implement a default behavior. An Interface can only declare constants and instance methods, but cannot implement default behavior and all methods are implicitly abstract. An interface has all public members and […]
Core Java Interview Question and Answers 1) What is the most important feature of Java? A) Java is a platform independent language. 2) What do you mean by platform independence? A) Platform independence means that we can write and compile the java code in one platform (eg Windows) and can execute the class in any […]