測試IDE效能2

public class MainClass {

    public static void main(String[] args) {
        long t1 = System.nanoTime();
        for (int i = 0; i < 1000; i++) {
            for (int j = 0; j < 1000; j++) {
                System.out.printf("O");
                System.out.printf("B");
            }
            System.out.printf("\n");
        }
        long t2 = System.nanoTime();
        double seconds = (double) (t2 - t1) / 1000000000.0;
        System.out.printf("%f seconds\n", seconds);
    }
}