producer.java

来自「基于netbeans的java桌面应用程序合集」· Java 代码 · 共 39 行

package com.sun.tiger.concurrency;

import java.io.PrintStream;
import java.util.Date;
import java.util.concurrent.BlockingQueue;

public class Producer extends Thread {
    
    private BlockingQueue q;
    private PrintStream out;
    
    public Producer(BlockingQueue q, PrintStream out) {
        setName("Producer");
        this.q = q;
        this.out = out;
    }
    
    public void run() {
        try {
            while (true) {
                q.put(produce());
            }
        } catch (InterruptedException e) {
            out.printf("%s interrupted: %s", getName(), e.getMessage());
        }
    }
    
    private String produce() {
        while (true) {
            double r = Math.random();
            
            // Only goes forward 1/10 of the time
            if ((r*100) < 10) {
                String s = String.format("Inserted at %tc", new Date());
                return s;
            }
        }
    }
}