1.多线程创建方式
Thread的创建方式
Thread thread = new Thread() {
@Override
public void run() {
System.out.println("Thread started!");
}
};
thread.start();
2.Runnable的创建方式
Runnable runnable = new Runnable() {
@Override
public void run() {
System.out.println("Thread with Runnable started!");
}
};
Thread thread = new Thread(runnable); thread.start();
3.ThreadFactory创建方式
ThreadFactory factory = new ThreadFactory() {
int count = 0;
@Override
public Thread newThread(Runnable r) { count ++;
return new Thread(r, "Thread-" + count);
}
};
Runnable runnable = new Runnable() {
@Override
public void run() {
System.out.println(Thread.currentThread().getName() + "started!");
}
Thread thread = factory.newThread(runnable);
thread.start();
Thread thread1 = factory.newThread(runnable); thread1.start();
4.Executor 和线程池
常用：newCachedThreadPool()
Runnable runnable = new Runnable() {
@Override
public void run() {
System.out.println("Thread with Runnable started!");
}
};
Executor executor = Executors.newCachedThreadPool();
executor.execute(runnable); executor.execute(runnable); executor.execute(runnable);
短时批量处理：newFixedThreadPool()
ExecutorService executor = Executors.newFixedThreadPool(20); for (Bitmap bitmap : bitmaps) {
executor.execute(bitmapProcessor(bitmap));
}
executor.shutdown();
5.Callable 和 Future创建方式
Callable<String> callable = new Callable<String>() {
@Override
public String call() {
try {
Thread.sleep(1500);
} catch (InterruptedException e) { e.printStackTrace();
}
return "Done!";
}
};
ExecutorService executor = Executors.newCachedThreadPool();
Future<String> future = executor.submit(callable); try {
String result = future.get(); System.out.println("result: " + result);
} catch (InterruptedException | ExecutionException e) { e.printStackTrace();
}
