Film.javapackage FilmTest;public class Film { private String name; private boolean flag = true; public synchronized void play(String name) { if(!flag){ try { this.wait(); } catch (InterruptedException e) { // TODO Auto-generated catch block e.printStackTrace(); } } try { Thread.sleep(500); } catch (InterruptedException e) { // TODO Auto-generated catch block e.printStackTrace(); } System.out.println("producer-1"+name); this.name = name; // System.out.println(name); this.notify(); this.flag = false; } Player.javapackage FilmTest;public class Player implements Runnable { private Film film; public Player(Film film) { // TODO Auto-generated constructor stub this.film = film; } @Override public void run() { // TODO Auto-generated method stub for(int i=0;i<20;i++){ if(0==i%2){ film.play("film-1-"+i); }else{ film.play("film-2-"+i); } } }}Watcher.javapackage FilmTest;public class Watcher implements Runnable { private Film film; public Watcher(Film film) { super(); this.film = film; } @Override public void run() { film.watch(); }}MainTest.javapackage FilmTest;public class MainTest { /** * @param args */ public static void main(String[] args) { // TODO Auto-generated method stub Film film = new Film(); Player player = new Player(film); Watcher watcher = new Watcher(film); new Thread(player).start(); new Thread(watcher).start(); }}執(zhí)行結(jié)果如下， 出現(xiàn)下面內(nèi)容代碼還是運行狀態(tài)producer-1film-1-0watcher-2film-1-0producer-1film-2-1感覺出現(xiàn)了死鎖 ，但不知道問題出在哪里，求指教
2 回答
慕姐8265434
TA貢獻(xiàn)1813條經(jīng)驗 獲得超2個贊
這不是死鎖啊，是你的代碼有問題。
你打印了producer-1film-2-1之后，flag = false，那么在你下次執(zhí)行play方法的時候會執(zhí)行this.wait()，并且之后它不會被喚醒，一直處于wait狀態(tài)。所以之后沒有任何打印信息輸出。
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