Java Multithreading (Readwritelock)

 Packagecom.example; Public classApp { Public Static voidMain (string[] args) {Info Info=NewInfo (); Readinfo RI=NewReadinfo (info); Writeinfo WI=NewWriteinfo (info); Thread T1=NewThread (ri, "Ri1"); Thread T2=NewThread (ri, "Ri2"); Thread T3=NewThread (ri, "Ri3"); Thread T4=NewThread (WI, "Wi1"); Thread T5=NewThread (WI, "Wi2");        T1.start ();        T2.start ();        T3.start ();        T4.start ();        T5.start (); }}

 Packagecom.example;ImportJava.util.concurrent.locks.ReadWriteLock;ImportJava.util.concurrent.locks.ReentrantReadWriteLock; Public classInfo {Private intnum; //Readwritelock can be understood as a more granular management of synchronized    PrivateReadwritelock Lock;  PublicInfo () { This. num = 0; Lock=NewReentrantreadwritelock (); }         Public intGetnum () {Lock.writelock (). Lock (); intOutput = This. Num;        Lock.writelock (). Unlock (); returnoutput; }         Public voidSetnum (intinput)        {Lock.readlock (). Lock ();  This. num =input;    Lock.readlock (). Unlock (); }    }

 Packagecom.example; Public classReadinfoImplementsRunnable {PrivateInfo Info;  PublicReadinfo (Info in) { This. info =In ; } @Override Public voidrun () { for(inti = 0; I < 10; i++) {System.out.println (Thread.CurrentThread (). GetName ()+ "   " +info.getnum ()); Try{Thread.Sleep (1); } Catch(interruptedexception e) {e.printstacktrace (); }        }    }}

 Packagecom.example; Public classWriteinfoImplementsRunnable {PrivateInfo Info;  PublicWriteinfo (Info in) { This. info =In ; } @Override Public voidrun () { for(inti = 0; I < 10; i++) {Info.setnum (i+info.getnum ()); System.out.println (Thread.CurrentThread (). GetName ()+ "SetInfo:" +info.getnum ()); Try{Thread.Sleep (1); } Catch(interruptedexception e) {e.printstacktrace (); }        }    }}

Java Multithreading (Readwritelock)