Final class in java

by

In java, a class declared with final keyword is called as final class. Inheritance is not possible with final class.

Example

final class Show{
    //final class method
	public void show(){
		System.out.println("Inside final method");
	}
}
class FinalClassTest extends Show{
	public void show(){
		System.out.println("Inside overridden method of final class");
	}
}
public class Main {
	public static void main(String args[]){
		//creating object of FinalClassTest Class
		FinalClassTest obj = new FinalClassTest();
		//method call
		obj.show();
	}
}

Output

Main.java:7: error: cannot inherit from final Show
class FinalClassTest extends Show{
                             ^
1 error

Java interview questions on final keyword