[英]How to synchronize thread pool?
my homework is about implementing an application that through threads allows me to search for a file in different folders the threads will create a ring topology, where each thread has interaction with the successor and predecessor thread.. but first I would like to print the id of the current node, the next one, and the previous one on my jframe.我的作业是关于实现一个应用程序,该应用程序允许我通过线程搜索不同文件夹中的文件,这些线程将创建一个环形拓扑,其中每个线程都与后继线程和前驱线程进行交互......但首先我想打印 id我的 jframe 上的当前节点、下一个和上一个节点。
The user specific how many threads he want to use, and that's the number of independent windows will be create.用户指定他想使用多少个线程,这就是将创建的独立窗口的数量。
But my question is, how do I know that?但我的问题是,我怎么知道? I think if I do that inside the for cycle using 'i' and increment it, like i+1, to print the following isn't the correct way.
我想如果我在 for 循环中使用 'i' 这样做并增加它,比如 i+1,打印以下内容不是正确的方法。
this is my constructor where I am giving the index of the for cycle then I have my Run method to print it to a jframe这是我的构造函数,我在其中给出 for 循环的索引,然后我有我的 Run 方法将它打印到 jframe
public tareaHilo(int id) {
initComponents();
this.idHilo = id;
}
public void run() {
this.setVisible(true);
numeroHilo.setText(Integer.toString(idHilo));
nodoPrecedente.setText("previous one");
nodoSubsecuente.setText("next one");
}
// This is other class // 这是其他类
private void botonCrearActionPerformed(java.awt.event.ActionEvent evt) {
try {
tareaHilo tarea;
numHilos = Integer.parseInt(inputHilos.getText());
ExecutorService ex = Executors.newFixedThreadPool(numHilos);
for (i = 1; i <= numHilos; i++) {
tarea = new tareaHilo(i);
ex.execute(tarea);
}
this.setVisible(false);
} catch (Exception e) {
e.printStackTrace();
}
}
Swing is single-threaded. Swing 是单线程的。 Don't do this with an ExecutorService.
不要使用 ExecutorService 执行此操作。 Use the Swing Timer instead.
改用摇摆计时器。 Something like:
就像是:
public tareaHilo(int id) {
initComponents();
this.idHilo = id;
}
int i;
public void actionPerformed(ActionEvent ae) {
this.setVisible(true);
numeroHilo.setText("" + i);
i++;
nodoPrecedente.setText("Hilo Anterior #");
nodoSubsecuente.setText("Hilo Siguiente #");
}
private void botonCrearActionPerformed(java.awt.event.ActionEvent evt) {
try {
tareaHilo tarea;
numHilos = Integer.parseInt(inputHilos.getText());
javax.swing.Timer t = new javax.swing.Timer();
t.scheduleAtFixedRate(...)
this.setVisible(false);
} catch (Exception e) {
e.printStackTrace();
}
}
I've let it for you to fill in the scheduledAtFixedRate parameters, as well as work out when/how to stop the timer action我已经让你填写 scheduleAtFixedRate 参数,以及计算何时/如何停止计时器操作
声明:本站的技术帖子网页,遵循CC BY-SA 4.0协议,如果您需要转载,请注明本站网址或者原文地址。任何问题请咨询:yoyou2525@163.com.