Java中给Runnable线程传递参数的三种解决方案:
一、通过构造函数传递参数
public class MyThread1 extends Thread
{
private String name;
public MyThread1(String name)
{
this.name = name;
}
public void run()
{
System.out.println("hello " + name);
}
public static void main(String[] args)
{
Thread thread = new MyThread1("world");
thread.start();
}
}
二、通过变量和方法传递数据
public class MyThread2 implements Runnable
{
private String name;
public void setName(String name)
{
this.name = name;
}
public void run()
{
System.out.println("hello " + name);
}
public static void main(String[] args)
{
MyThread2 myThread = new MyThread2();
myThread.setName("world");
Thread thread = new Thread(myThread);
thread.start();
}
}
三、通过回调函数传递数据
class Data
{
public int value = 0;
}
class Work
{
public void process(Data data, Integer numbers)
{
for (int n : numbers)
{
data.value += n;
}
}
}
public class MyThread3 extends Thread
{
private Work work;
public MyThread3(Work work)
{
this.work = work;
}
public void run()
{
java.util.Random random = new java.util.Random();
Data data = new Data();
int n1 = random.nextInt(1000);
int n2 = random.nextInt(2000);
int n3 = random.nextInt(3000);
work.process(data, n1, n2, n3); // 使用回调函数
System.out.println(String.valueOf(n1) + "+" + String.valueOf(n2) + "+"
+ String.valueOf(n3) + "=" + data.value);
}
public static void main(String[] args)
{
Thread thread = new MyThread3(new Work());
thread.start();
}
}