Thread继承和Runnable接口创建多线程比较

By heiry on 2019-04-20 [ in 技术 ]

java中创建多线程主要是三种方式，1.继承Thread类，重写run方法 2.实现Runnable接口，重写run方法 3.实现Callable接口，重写call方法。最常用的是前两种，很多书上都提到2方式上的优势，理由是方便实现资源共享，代码和数据的分离，更好体现面向对象思想。实际上，我认为这两种没有太大区别，通过线程同步两者基本没什么差别，看个人习惯而已。

继承方式创建多线程：

Plain text
Copy to clipboard
Open code in new window
EnlighterJS 3 Syntax Highlighter
public class ThreadDemo{
public static void main(String [] args){
new NewThread().start();
while(true){
System.out.println("main thread is running");
}
}
}
class NewThread extends Thread{
public void run(){
while(true){
System.out.println(Thread.currentThread().getName()+"is running");
}
}
}
public class ThreadDemo{ public static void main(String [] args){ new NewThread().start(); while(true){ System.out.println("main thread is running"); } } } class NewThread extends Thread{ public void run(){ while(true){ System.out.println(Thread.currentThread().getName()+"is running"); } } }
public class ThreadDemo{
public static void main(String [] args){
new NewThread().start();
while(true){
System.out.println("main thread is running");
}
}
}
class NewThread extends Thread{
public void run(){ 
while(true){
System.out.println(Thread.currentThread().getName()+"is running");
}
}
}

Thread（Runnable target）是Thread类的构造方法，Runnable参数为接口类;

Plain text
Copy to clipboard
Open code in new window
EnlighterJS 3 Syntax Highlighter
public class ThreadMain{
public static void main(String [] args){
ThreadRunable runableDemo = new ThreadRunable();
Thread newThread = new Thread(runableDemo);
newThread.start();
while(true){
System.out.println("main thread is running");
}
}
}
class ThreadRunable implements Runnable{
public void run(){
while(true){
System.out.println(Thread.currentThread().getName()+"is running");
}
}
}
public class ThreadMain{ public static void main(String [] args){ ThreadRunable runableDemo = new ThreadRunable(); Thread newThread = new Thread(runableDemo); newThread.start(); while(true){ System.out.println("main thread is running"); } } } class ThreadRunable implements Runnable{ public void run(){ while(true){ System.out.println(Thread.currentThread().getName()+"is running"); } } }
public class ThreadMain{
    public static void main(String [] args){
        ThreadRunable runableDemo = new ThreadRunable();
        Thread newThread = new Thread(runableDemo);
        newThread.start();
        while(true){
            System.out.println("main thread is running");
}
}
}
class ThreadRunable implements Runnable{
    public void run(){
        while(true){
            System.out.println(Thread.currentThread().getName()+"is running");
}
}
}

 

 

 >>



© 2009-2024 MOSANG.NET DESIGNED BY HEIRY