java Thread 모양 익히기. 2가지 종류(예제, 코드)

java로 threadPool을 만들기 전에 잠시 thread에 대한 기본적인 모양을 익히고 간다.

(c++로 thread pool의 로직은 알고 있으나 java에선 어떻게 동작하는지 모르겠다.)

class AAA extends Thread { public void run() { System.out.println("Here is AAA class"); } } class BBB implements Runnable{ @Override public void run() { System.out.println("Here is BBB class"); } } public class ThreadEx { public static void main(String[] arg) { AAA ap = new AAA(); Thread bp = new Thread(new BBB()); ap.setPriority(3); bp.setPriority(8); ap.start(); bp.start(); } }

class AAA extends Thread { public void run() { for( int i=0;i<15;i++ ) { java.util.Date date = new java.util.Date(); System.out.println("data="+date.toString()); try { Thread.sleep(1000); } catch (InterruptedException ie) { } } } } class BBB extends Thread { public void run() { for( int i=0;i<7;i++ ) { System.out.println("Hello"+i); try { Thread.sleep(2000); } catch (InterruptedException ie) { } } } } public class ThreadEx { public static void main(String[] arg) { System.out.println("main thread start!!"); AAA thread1 = new AAA(); BBB thread2 = new BBB(); thread1.setDaemon(false); thread2.setDaemon(false); thread1.start(); thread2.start(); System.out.println("main thread end!!"); } }