Test.java

public class Test {

    int count;

    synchronized void bump() {
        count++;
    }

    static int classCount;

    static synchronized void classBump() {
        classCount++;
    }

}

class BumpTest {
    int count;

    void bump() {
        synchronized (this) {
            count++;
        }
    }

    static int classCount;

    static void classBump() {
        try {
            synchronized (Class.forName("BumpTest")) {
                classCount++;
            }
        } catch (ClassNotFoundException e) {

        }
    }
}