public class A {
    // warning occurs on this method:
    // The method foo() from the type A can potentially be declared as static
    protected boolean foo() {
        return false;
    }
}

public final class B extends A {
    @Override
    protected boolean foo() {
        // do B specific things
    }
}

public class A {
	public boolean foo()
	{
		return false;
	}
}

public class B extends A {	
	@Override
	public boolean foo() {
		// TODO Auto-generated method stub
		return true;
	}
}

public class A {
    // warning occurs on this method:
    // The method foo() from the type A can potentially be declared as static
    protected boolean foo() {
        return false;
    }
}

public final class B extends A {
    @Override
    protected boolean foo() {
        // do non-static, B specific things
        return true;
    }
}