Why methods are needed in Java - Test Your Understanding

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Practice - 5 Tasks

1fill in blank

easy

Complete the code to define a method that prints a greeting.

Java

public class HelloWorld {
    public static void [1]() {
        System.out.println("Hello, world!");
    }

    public static void main(String[] args) {
        greet();
    }
}

🎯 Drag options to blanks, or click blank then click option

Agreet

Bmain

Cprint

Dhello

Attempts:

3 left

2fill in blank

medium

Complete the code to call the method that calculates the sum.

Java

public class Calculator {
    public static int sum(int a, int b) {
        return a + b;
    }

    public static void main(String[] args) {
        int result = [1](5, 3);
        System.out.println(result);
    }
}

🎯 Drag options to blanks, or click blank then click option

Atotal

Bsum

Ccalculate

Dadd

Attempts:

3 left

3fill in blank

hard

Fix the error by completing the method call correctly.

Java

public class Printer {
    public static void printMessage(String message) {
        System.out.println(message);
    }

    public static void main(String[] args) {
        [1]("Welcome!");
    }
}

🎯 Drag options to blanks, or click blank then click option

Aprint

Bprintln

CprintMessage

Dmessage

Attempts:

3 left

4fill in blank

hard

Fill both blanks to create a method that returns the square of a number and call it.

Java

public class MathUtils {
    public static int [1](int num) {
        return num [2] num;
    }

    public static void main(String[] args) {
        int sq = square(4);
        System.out.println(sq);
    }
}

🎯 Drag options to blanks, or click blank then click option

Asquare

B+

C*

Dmultiply

Attempts:

3 left

5fill in blank

hard

Fill all three blanks to create a method that checks if a number is even and call it.

Java

public class NumberCheck {
    public static boolean [1](int n) {
        return n [2] 2 [3] 0;
    }

    public static void main(String[] args) {
        boolean result = isEven(10);
        System.out.println(result);
    }
}

🎯 Drag options to blanks, or click blank then click option

AisEven

B%

C==

D!=

Attempts:

3 left