新手初学多线程,对多线程理解不够好.刚写一个小程序,高手看看错误在哪里
题目要求: 5个读线程,2个写线程,要求从5个读线程读入字符串,转化成大写后,放入写线程小弟的感觉.重点.就是如果让读线程不能和两个写线程冲突问题.我的想法是写了两个写线程的CLASS,必须JOIN后才能继续(也就是不冲突),在读线程里通过取一个随机数,决定放入第一个写线程还是第二个写线程
小弟是以C++入门的,对JAVA完全有点晕,本身就不会多线程,现在用JAVA写就更糊涂了.求改错.先谢谢了...
程序代码：public class ReadThread implements Runnable//读线程
{
private string name;
public ReadThread(string name1)
{
this.name=name1;
}
public void run()
{
int x=this.name.length();
String m="";
for(int i=0;i<x;i++)
{
if(this.name.charAt(i)>='a' && this.name.charAt(i)<='z')
m=m+(char)(this.name.charAt(i)-32);
else
m=m+(char)(this.name.charAt(i));
}
boolean b1=nextDBoolean();//这里产生一个随机布尔,来判定是用第一个写线程或者第二个写线程
if (b1=true)
{
WriteThread1 wt1= new WriteThread(m);
Thread t01= new Thread(wt1);
t01.start();
t01.join();
}
else
{
WriteThread2 wt2= new WriteThread(m);
Thread t02= new Thread(wt2);
t02.start();
t02.join();
}
}
}
public class WriteThread1 implements Runnable//第一个写线程
{
private string name;
public WriteThread1(string name1)
{
this.name=name1;
}
public void run()
{
//code to send this.name somewhere else
}
}
public class WriteThread2 implements Runnable//第二个写线程,一模一样
{
private string name;
public WriteThread2(string name1)
{
this.name=name1;
}
public void run()
{
//code to send this.name somewhere else
}
}
public class TestRunnable//主程式
{
public static void main(String[] args)
{
//initialize 5 thread, for example
ReadThread rt1= new ReadThread("abcde");
ReadThread rt2 new ReadThread("defgh");
ReadThread rt3 new ReadThread("a34cd");
ReadThread rt4= new ReadThread("ABcDE");
ReadThread rt5= new ReadThread("lzxC8");
Thread t1= new Thread(rt1);
Thread t2= new Thread(rt2);
Thread t3= new Thread(rt3);
Thread t4= new Thread(rt4);
Thread t5= new Thread(rt5);
t1.start();
t2.start();
t3.start();
t4.start();
t5.start();
}
}[ 本帖最后由 hys1986 于 2011-5-23 07:53 编辑 ]
