Java programming thought reading notes--21st chapter concurrency

1. Basic threading Mechanism

　　Defining tasks

 Public classLiftOffImplementsrunnable{protected intCountdown = 10; Private Static intTaskcount = 0; Private Final intid = taskcount++;  PublicLiftOff () {} PublicLIFTOFF (intCountdown) {         This. Countdown =Countdown; }     PublicString status () {return"#" +id+ "(" + (Countdown>0?countdown: "liftoff!") +"). "; } @Override Public voidrun () { while(countdown-->0) {System.out.println (status ());        Thread.yield (); }    }}

　　Using the thread class to drive tasks

 Public class basicthreads {    publicstaticvoid  main (string[] args) {        new Thread (new  LiftOff ());        T.start ();        System.out.println ("Waiting for LiftOff");}    }

The garbage collector does not recycle thread objects until the task finishes executing.

Java programming thought reading notes--21st chapter concurrency