java 学习笔记4
（1） 线程的强制运行
先看线程强制运行的实例 ，再解释程序中是如何让程序强制运行的
public class withdra { private int totalMoney = 0; public synchronized void getmoney(int money){ synchronized(this) { System.out.println("正在执行getmoney（）方法！"); int restmoney = totalMoney; restmoney -= money; try{ Thread.sleep(1000); }catch (InterruptedException e) { e.printStackTrace(); } totalMoney =restmoney; System.out.println(Thread.currentThread().getName()+"提取1000元后的余额为："+totalMoney); } } public void setMoney() { this.totalMoney=9999; System.out.println(Thread.currentThread().getName()+"把存款设置为："+totalMoney); } publicwithdra(int totalmoney) { this.totalMoney =totalmoney; } }public class FirThread implements Runnable{ privatewithdra wd; publicvoid run() { wd.getmoney(1000); } publicFirThread(withdra wd) { this.wd = wd ;}}public class secThread implements Runnable{ privatewithdra wd; publicvoid run() { wd.setMoney(); } publicsecThread(withdra wd) { this.wd = wd ;} } public class TestSyn { publicstatic void main(String[] args) { withdrawd = new withdra(4000); System.out.println("现在的存款为4000"); FirThreadft = new FirThread(wd); secThreadst = new secThread(wd); Threadth1 = new Thread(ft,"th1"); Threadth2 = new Thread(ft,"th2"); th1.start(); try{ Thread.sleep(10); }catch (InterruptedException e) { e.printStackTrace(); } th2.start(); } }