public class MyClass {

	public static int generateRandom(){
		return new Random().nextInt();
	}

	public int generateRandomDyn(){
		return new Random().nextInt();
	}
}


public class Main {

	public static void main(String[] args) {

		long staticBegin = getCurrDate();
		for (int i = 0; i < 10000000; i++) {
			MyClass.generateRandom();
		}
		long staticEnd = getCurrDate();
		System.out.println("static time: " + (staticEnd - staticBegin) );


		long dynamicBegin = getCurrDate();
		for (int i = 0; i < 10000000; i++) {
			new MyClass().generateRandomDyn();
		}
		long dynamicEnd = getCurrDate();
		System.out.println("dynamic time: " + (dynamicEnd - dynamicBegin));
	}

	public static long getCurrDate(){
		return System.currentTimeMillis();
	}
}