Method calling in Java - Interactive Code Practice

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Practice - 5 Tasks

1fill in blank

easy

Complete the code to call the method greet.

Java

public class Main {
    public static void greet() {
        System.out.println("Hello!");
    }
    public static void main(String[] args) {
        [1];
    }
}

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Agreet()

Bgreet

Ccall greet()

DSystem.greet()

Attempts:

3 left

2fill in blank

medium

Complete the code to call the method add with arguments 5 and 3.

Java

public class Calculator {
    public static int add(int a, int b) {
        return a + b;
    }
    public static void main(String[] args) {
        int result = [1];
        System.out.println(result);
    }
}

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Aadd{5, 3}

Badd 5, 3

Cadd[5, 3]

Dadd(5, 3)

Attempts:

3 left

3fill in blank

hard

Fix the error in calling the method printMessage.

Java

public class Messenger {
    public static void printMessage(String msg) {
        System.out.println(msg);
    }
    public static void main(String[] args) {
        [1];
    }
}

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AprintMessage{Hello World}

BprintMessage("Hello World")

CprintMessage['Hello World']

DprintMessage msg

Attempts:

3 left

4fill in blank

hard

Fill both blanks to call the method multiply with arguments 4 and 7 and store the result.

Java

public class MathOps {
    public static int multiply(int x, int y) {
        return x * y;
    }
    public static void main(String[] args) {
        int product = [1];
        System.out.println([2]);
    }
}

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Amultiply(4, 7)

Bmultiply(7, 4)

Cproduct

Dx * y

Attempts:

3 left

5fill in blank

hard

Fill all three blanks to call concat method with two strings and print the result.

Java

public class StringOps {
    public static String concat(String a, String b) {
        return a + b;
    }
    public static void main(String[] args) {
        String result = [1];
        System.out.println([2]);
        System.out.println([3]);
    }
}

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Aconcat("Hello, ", "World!")

Bresult

C"Done"

Dconcat("Hi", " there")

Attempts:

3 left