Static vs non-static behavior in Java - Interactive Practice

ads_click

Practice - 5 Tasks

1fill in blank

easy

Complete the code to declare a static variable.

Java

public class Example {
    static int [1] = 10;
}

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

Afinal

Bthis

Ccount

Dvoid

Attempts:

3 left

2fill in blank

medium

Complete the code to call a static method from the class.

Java

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

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

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

Amultiply

Badd

Csubtract

Dsum

Attempts:

3 left

3fill in blank

hard

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

Java

public class Counter {
    int count = 0;

    public static void main(String[] args) {
        Counter c = new Counter();
        System.out.println(c.[1]);
    }
}

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

Acount

Bthis.count

Cstatic count

DCounter.count

Attempts:

3 left

4fill in blank

hard

Fill both blanks to create a static method that returns the static variable.

Java

public class Data {
    static int value = 100;

    public static [1] getValue() {
        return [2];
    }
}

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

Aint

Bvalue

Cvoid

Dthis.value

Attempts:

3 left

5fill in blank

hard

Fill both blanks to create a class with a static variable, a non-static variable, and a method that prints both.

Java

public class Info {
    static String [1] = "StaticVar";
    String [2] = "InstanceVar";

    public void printInfo() {
        System.out.println([1] + " and " + [2]);
    }
}

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

AstaticVar

BinstanceVar

Attempts:

3 left