Thread 변수 공유

package com.ygygood.sample_code;

import java.util.ArrayList;
import java.util.List;

public class ThreadTest {
	static public List<Integer> arrList;
	public ThreadTest() {
		arrList = new ArrayList<Integer>();
	}
	
	public void start() {
		Runnable putWorker = new PutWorker();
		Runnable getWorker = new GetWorker();
		
		Thread pThread = new Thread(putWorker);
		Thread gThread = new Thread(getWorker);
		
		pThread.start();
		gThread.start();
		
	}
	
	public static void main(String[] args) {
		new ThreadTest().start();
	}
}

class PutWorker implements Runnable{

	public void run() {
		// TODO Auto-generated method stub
		for(int i=1; i<=100; i++) {
			try {
				Thread.sleep(100);
				ThreadTest.arrList.add(i);
				System.out.println("PutWoker:"+i);
			}
			catch (InterruptedException e) {
				// TODO Auto-generated catch block
				e.printStackTrace();
			}
			
		}
	}
}

class GetWorker implements Runnable{

	public void run() {
		// TODO Auto-generated method stub
		while(true) {
			try {
				Thread.sleep(100);
			}
			catch (InterruptedException e) {
				// TODO Auto-generated catch block
				e.printStackTrace();
			}
			System.out.println("size of list:"+ThreadTest.arrList.size());
			if(ThreadTest.arrList.size() != 0) {
				System.out.println("GetWorker:"+ThreadTest.arrList.get(0));
				ThreadTest.arrList.remove(0);
			}
		}
	}
	
}