Java Thread Processing II

To write a printer class

Write a two-way

1  Public classPrinter {2 3      Public voidprint1 ()4     {5         6System.out.print ("Micro");7System.out.print ("Cold");8System.out.print ("the");9System.out.print ("Rain");Ten System.out.println (); One     } A      Public voidPrint2 () -     { -          theSystem.out.print ("Good"); -System.out.print ("People"); - System.out.println (); -          +          -     } +}

Purpose: To enable two threads to execute two methods in this class

Line Cheng:

 Public class extends Thread {    publicstatic  Printer p1; @Overridepublicvoid run () {    for (int i = 1; I <=500; i++) {        p1.print1 ();}    } 

Thread Two:

 Public class Implements runnable{    publicstatic  Printer p2;    @Override    publicvoid  run () {       for (int i = 1; I <=500; i++) {            p2.print2 ();     }}}

Method calls in the test class

 Public class Test {publicstaticvoid  main (string[] args) {    Printer p=New  Printer ();    MyThread T1=new  MyThread ();    T1.p1=p;    T1.start ();    MyThread2 t2=new  MyThread2 ();    T2.P2=p;    thread T3=new  thread (T2);    T3.start ();    }}

The following occurs: Because the programmer cannot manually intervene the CPU to allocate thread resources

Workaround: Add a sync lock so that when one thread finishes executing, another thread has the right to execute

 Public classPrinter { Public voidprint1 () {synchronized( This) {System.out.print (Micro); System.out.print (Cold); System.out.print (Of); System.out.print (Rain);        System.out.println (); }            }     Public voidPrint2 () {synchronized( This) {System.out.print (Good); System.out.print (People);        System.out.println (); }            }}

Resolved!!!!!!!!!

Java Thread Processing II