Multi-threaded 6---Re-entry lock 2

1.

1  Public classSyncDubbo2 {2     Static classsup{//Parent Class3          Public inti = 10;4          Public synchronized voidOpersup () {5             Try{6i--;7SYSTEM.OUT.PRINTLN ("Sup parent class print i=" +i);8Thread.Sleep (1000);9}Catch(interruptedexception e) {Ten e.printstacktrace (); One             } A         } -     } -      the     Static classSubextendssup{//sub-class -          Public synchronized voidopersub () { -             Try { -                  while(I > 0){ +i--; -System.out.println ("sub-subclass print i=" +i); +Thread.Sleep (1000); A                      This. Opersup (); at                 } -}Catch(Exception e) { - e.printstacktrace (); -             } -         } -     } in      -      Public Static voidMain (string[] args) { toThread T1 =NewThread (NewRunnable () { + @Override -              Public voidrun () { theSub Sub =NewSub (); * sub.opersub (); $             }Panax Notoginseng}, "T1"); -          the T1.start (); +     } A  the     /* + Sub Sub-category print I=9 - SUP Parent class print i=8 $ Sub Sub-category print I=7 $ SUP Parent class print I=6 - Sub Sub-category print I=5 - SUP Parent class print i=4 the Sub Sub-category print I=3 - SUP Parent class print i=2Wuyi Sub Sub-category print I=1 the SUP Parent class print i=0 -      */ Wu}

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Multi-threaded 6---Re-entry lock 2