java - 如何向 Java 线程传递参数？

Question

我在抽象类中有一段代码:

public abstract class Job implements Runnable{  
    public void start(Integer jobId) {                      
        try {
            new Thread(this).start();
        } catch (Exception e) {
            e.getMessage();
        }       
    }
}

类代码:

public class Test extends Job {

    @Override
    public void run() {
        for(int i = 0; i < 5; i++) {
            try {
                Thread.currentThread();
                Thread.sleep(2000);
            } catch (InterruptedException e) {
                e.printStackTrace();
            }
            System.out.println("TEST");
        }       
    }
}

主要我有:

public static void main (String[] args) throws MessagingException  
  {
      Test test = new Test();
      test.start(74); 
  }

那么如何将参数(jobId)从 start 方法传递到 run() 呢？

Answer 1

在 Job.start() 方法中，将值存储在成员变量中，以便稍后可以在 run() 方法中访问它，当线程已启动。

public abstract class Job implements Runnable {
    protected Integer jobId;

    public void start(Integer jobId) {
        this.jobId = jobId;
        try {
            new Thread(this).start();
        } catch (Exception e) {
            e.getMessage();
        }       
    }
}

public class Test extends Job {
    @Override
    public void run() {
        System.out.println(jobId);
    }
}