Question

public class JavaPuzzler {
     
    public static void main(String[] args) {
    JavaPuzzler javaPuzzler = null;
    System.out.println(javaPuzzler.get());
    }
     
    private static String get(){
        return "i am a java puzzler";
    }
}

You might think that it should throw NullPointerException because the main method invokes get() method on local variable which is initialized
to null, and you can’t invoke a method on null.

But if you run this program, you will see that it prints “i am a java puzzler”.

Answer 1

In your code sample, get() is a static member that belongs to the class, not to an instance. You do not need an instance in order to invoke the method.

public static String get() // belongs globally to class, no instance required
public String get() // belongs to instance