public class ThreadDemo{
public static void main(String args[]){
TestThread TT = new TestThread();
TT.start();
for(int i=0; ijava ThreadDemo
main thread is running
main thread is running
main thread is running
main thread is running
main thread is running
main thread is running
main thread is running
main thread is running
main thread is running
main thread is running
TestThread is running
TestThread is running
TestThread is running
TestThread is running
TestThread is running
TestThread is running
TestThread is running
TestThread is running
TestThread is running
TestThread is running
而不是书上写的
main 线程在运行
TestThread 在运行
main 线程在运行
TestThread 在运行
main 线程在运行
TestThread 在运行
这样交叉运行，为什么呢？
