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Intermediate Quizzes – Java Nested Classes

The following Java exercise(s) are designed for intermediate level programmers. If the level is too hard, then I recommend to select an easier one or you might consider reading my article about this topic, which offers a theoretical explanation including more exercises. Read More: Java Nested And Inner Classes

Article: Java nested and inner classes
Quizzes: Beginner  Intermediate  Advanced 

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Quiz 1: Using nested classes in Java

What happens when you try to compile and run the following program?

class Outer {

	public int x = 1;
	private int y = 3;

	Outer() {
		x += 3;
		y += 2;
	}
	Outer(int i) {
		this();
		x += i;
		System.out.print("-x" + x);
	}
	class Inner {
		int x = 3;
		private void method(){
			x -= 1;
			System.out.print("-x" + x + "-x" + y);
		}
	}
	public static void main(String[] args){
		Inner inner = new Outer(2).new Inner();
		inner.method();
	}
}

Select the correct answer.



Please, leave your questions, feedback and suggestions in the comments below! If you need more explanation by any of the answers, just let me know to update it for you!

Megisoft.com offers a practical method to learn and improve your Java skills. It avoids unnecessary long boring theoretical explanations, but it uses many exercises and quizzes. The author of Megisoft is Sar Maroof who has more than a decade of experience with web development mainly with Java, MySql, HTML and more..
Article: Java nested and inner classes
Quizzes: Beginner  Intermediate  Advanced 

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Author: Sar Maroof
More than a decade of experience with developing web applications mainly with Java.
Sun Certified JSP as well as EJB
CIW Certified Internet Webmaster - Mind IT
Applied Science in Physics HBO Amsterdam
Bachellor Science in Physics at Basra university.
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  1. You’re the grteseat! JMHO

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