java方法栈测试

来源：互联网发布：java中public private 编辑：程序博客网时间：2024/05/23 02:00

public class TestMethodStack {static class CalcThread1 extends Thread{   public void run()   {long start=System.currentTimeMillis();int count=0;run1(count);System.out.println("cost time1:"+(System.currentTimeMillis()-start)+"ms");   }}static class CalcThread2 extends Thread{   public void run()   {long start=System.currentTimeMillis();int count=0;run2(count);System.out.println("cost time2:"+(System.currentTimeMillis()-start)+"ms");   }}public static void main(String[] args) {for (int i = 0; i < 20; i++) {if(i%2==0){CalcThread1 t1=new CalcThread1();t1.start();}else{CalcThread2 t2=new CalcThread2();t2.start();}}}public static void run1(int count){for (int i = 0; i < 1000000000; i++) {if(i>1000000){count++;}else{ count--;}}}public static void run2(int count){for (int i = 0; i < 1000000000; i++) {if(i>1000000)count++;elsecount--;}}}

测试结果:

cost time1:5931ms
cost time1:6179ms
cost time1:6171ms
cost time1:6126ms
cost time2:6323ms
cost time1:6422ms
cost time1:6415ms
cost time2:6429ms
cost time2:6404ms
cost time2:6422ms
cost time2:6630ms
cost time2:6557ms
cost time2:6597ms
cost time2:6682ms
cost time2:6684ms
cost time1:6598ms
cost time2:6629ms
cost time1:6710ms
cost time1:6692ms
cost time1:6849ms

0 0