Measure Eclipse debugging performance

Debug.java

package app;

public class Debug {

    // 4 seconds in milliseconds
    private static final long MEASUREMENT_TIME = 4 * 1000;

    public static void main(final String[] args) {
        final long res = longRunningOperation();
        System.out.println(res);
    }

    private static long longRunningOperation() {
        final long started = System.currentTimeMillis();
        long cnt = 0;

        while (System.currentTimeMillis() - started < MEASUREMENT_TIME) {
            cnt++;
        }
        return cnt;
    }
}