Why static is needed in Java - Test Your Understanding

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Practice - 5 Tasks

1fill in blank

easy

Complete the code to declare a static variable in Java.

Java

public class Example {
    public [1] int count = 0;
}

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

Astatic

Bfinal

Cprivate

Dvoid

Attempts:

3 left

2fill in blank

medium

Complete the code to call a static method from the class without creating an object.

Java

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

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

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

Asum

Badd

Ccalculate

Dtotal

Attempts:

3 left

3fill in blank

hard

Fix the error in accessing a non-static variable from a static method by completing the code.

Java

public class Counter {
    static int count = 0;

    public static void increment() {
        [1]++;
    }
}

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

Acount

Bthis.count

CCounter.count

Dstatic count

Attempts:

3 left

4fill in blank

hard

Fill both blanks to create a static method that returns the square of a number.

Java

public class MathUtil {
    public [1] int square(int num) {
        return num [2] num;
    }
}

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

Astatic

B*

C+

Dvoid

Attempts:

3 left

5fill in blank

hard

Fill all three blanks to create a static block that initializes a static variable.

Java

public class Config {
    public static String setting;

    static [1] {
        setting = [2];
    }

    public static void main(String[] args) {
        System.out.println([3]);
    }
}

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

Ablock

B"default"

Csetting

Dstatic

Attempts:

3 left