Beginner quizzes – Java arrays

The following Java exercise(s) are designed for beginner level programmers. If the level is too hard, then I recommend reading my article about this topic, which offers a theoretical explanation including more exercises. Read More: Java Arrays

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Quiz 1: Arrays in Java

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

import java.util.Arrays;

public class MyArray {

	public static void main(String[] args){
		char[] arrayChar = new char[4];
		arrayChar[0] = 't';
		arrayChar[1] = 'o';
		arrayChar[2] = 'c';
		arrayChar[3] = 'n';
		Arrays.sort(arrayChar);
		for(int i = 0; i < arrayChar.length; i ++ ) {
			if(i == 3 || i == 0) {
				System.out.print("-" + arrayChar[i]);
			}
		}
	}
}

Select the correct answer.


Quiz 2: Java arrays

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

public class MyArray {

	int[] array1 = {2,3,7,4,5,4 };
	int[] array2 = {3,4,5,6,2,2,44,5 };

	void method(){
		for(int i = 0; i < array1.length; i ++ ) {
			if(array1[i] != 4) {
				System.out.print("-x" + array1[i]);
			}
		}
	}
	public static void main(String[] args){
		MyArray ma = new MyArray();
		ma.method();
		System.out.print("-x" + ma.array2.length);
	}
}

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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2 Comments

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  1. Awesome website! I love all your quizzes!

  2. Hello my name is Nadine and I just wanted to tell you that you are doing a great job here!

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