Quizzes – Java methods

The following Java exercise(s) are designed to help you understand the article to which it belongs. If the following quizzes are too hard, then I recommend to read the article first, which offers a theoretical explanation including examples and exercises.  

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Quiz 1: Introducing instance, class and local variables?

What is written to the standard output as the result of executing the following code?

public class MyClass {

	int i; // instance variable
	static int x; // class variable

	void method(){
		int z = 4; // local variable
		i += z;
		x += z;
	}
	public static void main(String[] args){
		MyClass mc = new MyClass();
		MyClass mc2 = new MyClass();
		mc.method();
		mc2.method();
		System.out.print(mc.i + "-" + mc2.i + "-" + mc.x + "-" + mc2.x);
	}
}

Select the correct answer.


 

Quiz 2: A Java method that returns an int value value?

What is written to the standard output as the result of executing the following code?

public class MyClass {

	public int getNumber(int i, int i2){
		if(i < i2) {
			return i2;
		}else if(i > i2) {
			return i;
		}else {
			return 3;
		}
	}
	public static void main(String[] args){
		MyClass mc = new MyClass();
		System.out.print(mc.getNumber(2,4));
		System.out.print(", " + mc.getNumber(2,2));
		System.out.print(", " + mc.getNumber(9,3));
	}
}

Select the correct answer.


Please, leave your questions, feedback and suggestions in the comments below!
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Sar Maroof is the author of two Java books namely, Java quizmaster for beginners and A guide to build a Java application.
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Applied Science in Physics HBO Amsterdam
As well as Bachellor Science in Physics.
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