java Runnable接口：是一个接口，它里面只有一个run()方法，没有start()方法，继2113承Runnable并实现这个方法就可以实现多线程了，但是5261这个run()方法不能自4102己调用，必须由系统来调用。

向线程中传递数据的三种方法：

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();

}

}

以上就是本文的全部内容，希望对大家的学习有所帮助，也希望大家多多支持脚本之家。