쓰레드(Thread)의 실행과 구현

+

프로세스 >> 실행 중인 프로그램

: 프로그램을 수행하는 데 필요한 데이터와 메모리 등의 자원 그리고 쓰레드로 구성.

 

쓰레드 >> 프로세스라는 작업공간에서 작업을 처리하는 일꾼

: 프로세스의 자원을 이용해서 실제로 작업을 수행하는 것.

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쓰레드의 구현방법

Thread클래스를 상속	Runnable인터페이스를 구현
Thread클래스를 상속받으면 다른 클래스를 상속받을 수 없다.	- 일반적인 방법 - 재사용성이 높고 코드의 일관성을 유지할 수 있다. -객체지향적인 방법 -오로지 run()만 정의되어 있는 간단한 인터페이스

 

package chap13;

public class ThreadEx1 {
	public static void main(String[] args) {
		ThreadEx1_1 ex1_1 = new ThreadEx1_1();
		ThreadEx1_2 ex1_2 = new ThreadEx1_2();

		ex1_1.start();
		new Thread(ex1_2).start(); // 새 쓰레드가 시작할 때 러너블객체를 담아서 실행
	}
}
// Thread클래스를 상속
class ThreadEx1_1 extends Thread {

	@Override
	public void run() {
		for (int i = 0; i < 10_000; i++) {
			System.out.print("0");

		}
	}
}
// Runnable인터페이스를 구현
class ThreadEx1_2 implements Runnable{
	@Override
	public void run() {
		for (int i = 0; i < 10_000; i++) {
			System.out.print("1");
		}
	}
}

 

출력

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