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.




Sar Maroof is a professional software development teacher, gives master classes and publishes technical articles. He is also an expert software developer and worked for several big as well as small companies and later as a freelancer.
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