1.继承Thread
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public class java_thread extends Thread{
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public static void main(String args[])
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{
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(new java_thread()).run();
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System.out.println("main thread run ");
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}
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public synchronized void run()
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{
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System.out.println("sub thread run ");
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}
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}
public class java_thread extends Thread{
public static void main(String args[])
{
(new java_thread()).run();
System.out.println("main thread run ");
}
public synchronized void run()
{
System.out.println("sub thread run ");
}
}
2.实现Runnable接口
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public class java_thread implements Runnable{
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public static void main(String args[])
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{
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(new Thread(new java_thread())).start();
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System.out.println("main thread run ");
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}
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public void run()
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{
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System.out.println("sub thread run ");
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}
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}
public class java_thread implements Runnable{
public static void main(String args[])
{
(new Thread(new java_thread())).start();
System.out.println("main thread run ");
}
public void run()
{
System.out.println("sub thread run ");
}
}
3.直接在函数体使用
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void java_thread()
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{
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Thread t = new Thread(new Runnable(){
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public void run(){
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mSoundPoolMap.put(index, mSoundPool.load(filePath, index));
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getThis().LoadMediaComplete();
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}});
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t.start();
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}
void java_thread()
{
Thread t = new Thread(new Runnable(){
public void run(){
mSoundPoolMap.put(index, mSoundPool.load(filePath, index));
getThis().LoadMediaComplete();
}});
t.start();
}
4.比较:
实现Runnable接口优势:
1)适合多个相同的程序代码的线程去处理同一个资源
2)可以避免java中的单继承的限制
3)增加程序的健壮性,代码可以被多个线程共享,代码和数据独立。
继承Thread类优势:
1)可以将线程类抽象出来,当需要使用抽象工厂模式设计时。
2)多线程同步
在函数体使用优势
1)无需继承thread或者实现Runnable,缩小作用域。
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