java - How to wait several objects -

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I have a thread that many objects have to wait from different threads. 

  @Override Public Zero run () {while (true) {for (background task tasks: actions) {synchronize (work) {if (task.isReady ()) {task.doTask (); }}}}}   
 But this is the stupid use of CPU time how many objects wait for   
 
 
 Please use  notifyaAll ()  to  notify ()  because the notification awakens a thread, as all inform () all Waiting threads arise.

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