同問(wèn)？

了解了線程，可以去了解下 隊(duì)列， 對(duì)于處理高并發(fā)，和提高業(yè)務(wù)數(shù)據(jù)吞吐量會(huì)很有用。

package?com.junbao.thread;

import?java.util.ArrayList;
import?java.util.List;
import?java.util.NoSuchElementException;
import?java.util.concurrent.ArrayBlockingQueue;
import?java.util.concurrent.BlockingQueue;
import?java.util.concurrent.ExecutorService;
import?java.util.concurrent.Executors;

public?class?ThreadTest?{
	
	static??ExecutorService??executorService??=??Executors?.?newFixedThreadPool?(5)?;

	@SuppressWarnings("deprecation")
	public?static?void?main(String[]?args)?throws?InterruptedException?{

		ThreadTest?test?=?new?ThreadTest();

		List<Integer>?numList?=?new?ArrayList<Integer>();
		for?(int?i?=?0;?i?<?10;?i++)?{
			numList.add(i);
		}

		//?隊(duì)列
		?final?BlockingQueue<Integer>?queue?=?new?ArrayBlockingQueue<Integer>(numList.size());
		//?放入
		try?{
			for?(Integer?ints?:?numList)?{
				queue.put(ints);
			}
		}?catch?(Exception?e)?{
			//?TODO:?handle?exception
		}
		final?List<Integer>?outList?=?new?ArrayList<Integer>();

		for?(int?j?=?0;?j?<?5;?j++)?{
			new?Thread()?{
				public?void?run()?{
					while?(true)?{
						try?{
							//?將此處的睡眠時(shí)間分別改為100和1000，觀察運(yùn)行結(jié)果
							Thread.sleep((int)?(Math.random()?*?(1000?-?100)?+?100));
							String?name1?=?Thread.currentThread().getName();
							System.out.println(name1?+?"準(zhǔn)備取數(shù)據(jù)!");
							Integer?num?=?queue.take();//?如果沒(méi)有了數(shù)據(jù),就會(huì)阻塞
							String?name2?=?Thread.currentThread().getName();
							outList.add(num);
							System.out.println(name2?+?"已經(jīng)取走數(shù)據(jù)，"?+?"隊(duì)列目前有"?+?queue.size()?+?"個(gè)數(shù)據(jù)");
						}?catch?(InterruptedException?e)?{
							e.printStackTrace();
						}?catch?(NoSuchElementException?e1)?{
							//?TODO:?handle?exception
						}
					}
				}
			}.start();
		}

		try?{
			while?(true)?{
				if?(queue.isEmpty())?{
					System.out.println("空了,可以執(zhí)行其他的任務(wù)了：打印輸出轉(zhuǎn)以后的列表");
					test.showList(outList);
					System.out.println(Thread.currentThread().getState());
					break;
				}
			}
		}?catch?(Exception?e)?{
			//?TODO:?handle?exception
		}
		
		test();
	}

	public?void?showList(List<Integer>?list)?{
		System.out.println(list.toString());
	}
	
	public?static?void?test(){
		System.out.println("繼續(xù)往下執(zhí)行，看看還有什么可以做");
	}
	
}

誰(shuí)說(shuō)一定要結(jié)束才會(huì)執(zhí)行sleep，不是說(shuō)你能很準(zhǔn)確知道作戰(zhàn)到什么時(shí)候會(huì)進(jìn)行下一步，兩個(gè)線程運(yùn)行是狀態(tài)是交互的，然后你還有個(gè)stage線程，三個(gè)線程都是獨(dú)立的。你這兩個(gè)運(yùn)行會(huì)，他還是會(huì)運(yùn)行stage線程里的sleep方法的。

我覺(jué)得應(yīng)該是上面兩個(gè)線程都結(jié)束了，才繼續(xù)進(jìn)行下面的sleep，你可以將50設(shè)置的大一點(diǎn)，比如好幾毫秒，然后你可以看一下運(yùn)行結(jié)果。