Generic Class in Java
A class that is declared generic type is called generic class in Java. It is type-safe and can act upon any data type. A generic class is also called “parameterized types” because it uses a parameter that determines which data…
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Generics in Java
Generics in Java is a mechanism that allows writing code for one type (say T) that is applicable for all types of data, instead of writing separate classes for each type. Let’s understand it with the help of an example.…
How to Create Arrays of Objects in Java
In this tutorial, we will learn how to create arrays of objects in Java with the help of example programs. So far, we have studied in the previous tutorial that an array in Java is an ordered, sequential group of…
Object Finalization in Java | Finalize in Java
Finalization in Java is an action that is automatically performed on an object before the memory occupied by the object is freed up by the garbage collector. The block of code that contains the action to be performed is called…
Garbage Collection in Java
Garbage collection in Java is the process of automatically freeing heap memory by deleting unused objects that are no longer accessible in the program. In other simple words, the process of automatic reclamation of runtime unused memory is known as…
Custom Annotation in Java
Creating your own annotation is called custom annotation or user-defined annotation in Java. It is very easy and more interesting to create your own annotation than using core java or third-party annotations. A custom annotation is declared by using the…
Annotations in Java
An annotation in Java is a kind of note (or documentation) in the application source code to instruct the Java compiler to do something. When the Java compiler sees annotation in a particular source code, it knows that it needs…
Top 70 Internet MCQ Questions with Answers
Here, we have listed the most important internet technology MCQ GK questions with the best possible answers. These internet MCQ questions can be asked in any competitive examinations like SSC CGL, IBPS (Clerk and PO), RRB, Group-D, etc. We have…
Sorting Array in Java
Sorting an array in Java means arranging elements of an array in a specific order, either in ascending or descending order. Sorting, like searching, is the most common task in computer programming. It is the process of arranging a list…