Static methods cannot access instance field count without an object reference

Static Variables and Methods

AP Computer Science A· difficulty 4/5

public class Counter {
    private int count;
    public static void inc() {
        count++;
    }
}

What is wrong?

A
$Nothing is wrong$
B
$count must be public$
C
$inc must return int$
D
$Static methods cannot access instance field count without an object reference$
check_circle

Explanation

Static methods belong to the class; they cannot reference instance fields directly. Either make count static or make inc an instance method.

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