1. Review of traditional threading technology-jdk5 multithreading

excerpt from: Zhang Xiaoxiang podcast, the teacher's "Java High-tech" video, and added a personal summary and understanding. Although I have not attended any training courses, a large part of my knowledge comes from the web-sharing video of the Wisdom Podcast.
very sincere thanks to Mr. Zhang's public video.

1 Importorg.junit.Test;2 /**3 * Traditional Thread review4 * Multithreading does not necessarily improve operational efficiency, and is related to CPU design and architecture. 5 * Multi-threaded download is to rob the resources of the server, not its own machine to speed up. 6  * @authorlitaiqing7  */8  Public classTraditionthread {9     /**Ten * How two traditional threads are created One      */ A @Test -      Public voidtest1 () { -         //Way One theThread thread =NewThread () { -             /** - * from the Thread.class source code, the Run method is performed by default Target.run (); - * @Override + Public void Run () { - if (target! = null) { + Target.run (); A                     } at                 } -                  - private Runnable target; -              */ - @Override -              Public voidrun () { in                  while(true){ - System.out.println (Thread.CurrentThread (). GetName ()); to                     //do not use this because this is not valid in the way that runnable creates threads +                     //System.out.println (This.getname ()); -                 } the             } *         }; $ Thread.Start ();Panax Notoginseng         /** - * Mode two the * Better use of runnable, more consistent with the idea of object-oriented programming, less coupling of the program structure, separating the task from the host +          */ AThread thread2 =NewThread (NewRunnable () { the @Override +              Public voidrun () { -                  while(true){ $ System.out.println (Thread.CurrentThread (). GetName ()); $                     //Error -                     //System.out.println (This.getname ()); -                 } the             } -         });Wuyi Thread2.start (); the         //------------------------------------- -         /** Wu * Consider which piece of code to run back?  -          */ About         NewThread (NewRunnable () { $ @Override -              Public voidrun () { -                  while(true){ -                     Try { AThread.Sleep (500); +}Catch(interruptedexception e) { the e.printstacktrace (); -                     } $System.out.println ("runable:" +Thread.CurrentThread (). GetName ()); the                 } the             } the         }){ the             /** - * Run this code block, the subclass overrides the method of the parent class, then run the subclass first, or find the parent class in              */ the @Override the              Public voidrun () { About                  while(true){ the                     Try { theThread.Sleep (500); the}Catch(interruptedexception e) { + e.printstacktrace (); -                     } theSystem.out.println ("Run:" +Thread.CurrentThread (). GetName ());Bayi                 } the             } the }.start (); -     } -}

1. Review of traditional threading technology-jdk5 multithreading