We are certain that these sets of Java Interview Questions will be of great help to you if you are preparing for interviews. If you'd like to read the extended version of this Java programming interview questions blog which involves OOPs interview questions. Do check out our highly reputed ...
Java is known for its simplicity of code, adding the concept of pointers will be contradicting. Moreover, since JVM is responsible for implicit memoryallocation, thus in order to avoid direct access to memory by the user, pointers are discouraged in Java. ...
The overriding concept comes into the picture with inheritance when we have two methods with the same signature, one in the parent class and another in the child class. We can use@Overrideannotation in the child class overridden method to make sure if the parent class method is changed, so ...
JSP is an integral part of Java EE. If you are giving an interview for a web developer, then having good knowledge of JSP is very important. This post contains a list of 35 JSP interview questions with answers. Please make sure to bookmark it because I will be kept on adding more to...
OOPs (Object-Oriented Programming System) is a programming concept, methodology, or paradigm, that is a core of Java programming used to design programming using classes and objects. The OOPs concepts in Java build on the four main principles.- Encapsulation: Binds data and operations that work ...
The meaning of Polymorphism is something like one name many forms. Polymorphism enables one entity to be used as as general category for different types of actions. The specific action is determined by the exact nature of the situation. The concept of polymorphism can be explained as "one inter...
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Are there any global variables in Java, which can be accessed by other part of your program?- No, it is not the main method in which you define variables. Global variables is not possible because concept of encapsulation is eliminated here. ...
A singleton class in Java can have only one instance. Therefore, all its methods and variables belong to this instance. The singleton class concept is useful when the developer needs to limit the number of objects for a class. What is a constructor in Java?
This is another great Singleton interview question in terms of understanding of concept of loading and cost associated with class loading in Java. Many of which I have interviewed not really familiar with this but its good to know concept. ...