What is a constructor?

A constructor is a "kind of" method in java which is used to initialize objects. The constructor is called when an object of a class is created. It can be used to set initial values for object attributes. A constructor definition is similar to a method definition, except that the constructor should have same name as the class and doesn't contain a return type.

public class MyClass {
    public MyClass() {
      // class level definitions

Java Concepts •  Added 10 months ago

why is string is immutable in java?

* In Java, string objects are immutable in nature which simply means once the String object is created its state cannot be modified. * Whenever you ...

What is the difference between this() and super() in Java?

In Java, super() and this(), both are special keywords that are used to call the constructor. __this:__ 1. this() represents the current instan ...

What is the difference between equals() and == in Java?

* __Equals()__ method is defined in Object class in Java and used for checking equality of two objects defined by business logic. * __''==''__ or dou ...

What is final keyword in Java?

__final__ is a special keyword in Java that is used as a non-access modifier. A final variable can be used in different contexts such as final variabl ...

What is the difference between a local variable and an instance variable?

__Local Variable:__ a local variable is typically used inside a method, constructor, or a block and has only local scope. Thus, this variable can be ...

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