Can we create object of a class inside the same class in Java?

No, the main method only runs once when you run your program. It will not be executed again. So, the object will be created only once. Think of your main method to be outside your class.

Can we create an object of a class in the same class?

The Java programming language allows you to define a class within another class. Static nested classes do not have access to other members of the enclosing class. As a member of the OuterClass , a nested class can be declared private , public , protected , or package private.

Can you create an instance of a class inside that class?

5 Answers. There is absolutely no problem in creating instances of a class in the class itself. The apparent chicken-or-egg problem is solved in different ways while the program is being compiled and when it is being run.

Can a class contain object of itself?

A class declaration can contain static object of self type, it can also have pointer to self type, but it cannot have a non-static object of self type.

How do you implement equals in Java?

Summary

1. Make sure to override equals(Object) so our method is always called.
2. Include a self and null check for an early return in simple edge cases.
3. Use getClass to allow subtypes their own implementation (but no comparison across subtypes) or use instanceof and make equals final (and subtypes can equal).

How do you create an object of another class in Java?

To create an object of Main , specify the class name, followed by the object name, and use the keyword new :

1. Example. Create an object called ” myObj ” and print the value of x: public class Main { int x = 5; public static void main(String[] args) { Main myObj = new Main(); System.
2. Example.
3. Second.java.

How do you create a object inside a class in Java?

In Java, we can create Objects in various ways:

1. Using a new keyword.
2. Using the newInstance () method of the Class class.
3. Using the newInstance() method of the Constructor class.
4. Using Object Serialization and Deserialization.
5. Using the clone() method.

How do you create an instance of an inner class in Java?

Inner classes To instantiate an inner class, you must first instantiate the outer class. Then, create the inner object within the outer object with this syntax: OuterClass. InnerClass innerObject = outerObject.

Can we create object inside method in Java?

You can’t declare a field inside a method. In Java, a type either has a field, or it doesn’t. Every instance of the same class has the same set of fields. (The field will have a default value, in this case null , until you assign a different value to it.)

What is @override in Java?

The @Override annotation is one of a default Java annotation and it can be introduced in Java 1.5 Version. It extracts a warning from the compiler if the annotated method doesn’t actually override anything. It can improve the readability of the source code.

Can there be two public classes in Java file?

Long story short: no, you can’t put two public classes in one file because the compiler wouldn’t be able to handle that correctly.