java lang null pointer exception code example

Example 1: nullpointerexception java

Integer num;
num = new Integer(10);

Example 2: nullpointerexception java

int x;
x = 10;

Example 3: null pointer exception method

public class MainClass {

    public static void main(String[] args) {
        anotherTest();
        test();
    }
    public static void test() {
        System.out.println("Printed from the test method.");
    }
    public static void anotherTest() {
        System.out.println("Printed from the anotherTest method.");
    }
}