多线程Java线程不能并行工作
下面是我的代码。我希望t1和t2应该并行运行,但在t1完成后,t2就开始了。我做错什么了吗。实际上,我试图复制生产者和消费者的问题,但有些地方我搞得一团糟
import java.util.ArrayList;
import java.util.List;
public class BankThread {
static List<String> amount = new ArrayList<String>();
public static void main(String[] args) {
Deposit dep = new Deposit();
WithDraw wDraw = new WithDraw();
Thread t1 = new Thread(dep);
Thread t2 = new Thread(wDraw);
t1.start();
t2.start();
}
}
class Deposit extends BankThread implements Runnable {
public void run(){
for (int i = 1; i < 10; i++) {
amount.add(""+(i*100));
System.out.println("Deposit #" + i
+ " put: " + i);
try {
Thread.sleep((int)(1000));
} catch (InterruptedException e) { }
}
}
}
class WithDraw extends BankThread implements Runnable{
public void run(){
System.out.println("In withdraw"+amount.size());
try {
for (int i = 0; i< amount.size(); i++) {
System.out.println("Withdraw #" + amount.get(i)
+ " removed " + amount.remove(i));
Thread.sleep((int)(1000));
}} catch (InterruptedException e) { }
}
}
# 1 楼答案
当我运行它时,输出是:
所以他们是并行运行的。问题是退出只经过一次循环,这可能不是我想要的
原因是它在for循环开始时只查看一次金额大小,因此不会看到新项目