Java向Runnable线程传递参数方法实例解析
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好吧啦网。
相关文章: