[DrJava] [ drjava-Bugs-1561340 ] Some problem with Threads

[SourceForge.net <no...@so...>]

Bugs item #1561340, was opened at 2006-09-19 14:21
Message generated for change (Tracker Item Submitted) made by Item Submitter
You can respond by visiting: 
https://sourceforge.net/tracker/?func=detail&atid=438935&aid=1561340&group_id=44253

Please note that this message will contain a full copy of the comment thread,
including the initial issue submission, for this request,
not just the latest update.
Category: Other
Group: 5: Makes DrJ unstable
Status: Open
Resolution: None
Priority: 5
Submitted By: Abhishek (abhishekasthana)
Assigned to: Nobody/Anonymous (nobody)
Summary: Some problem with Threads

Initial Comment:
I don't know if this is a bug or not, but one this is 
for sure DrJava is giving wrong output. I checked the 
o/p by running the program on command prompt and the 
o/p is what it should be.

I am running this program:

 class MyThread2 extends Thread{
  static int i= 0;
  String name;
  MyThread2(String n){
    name=n;
  }  
  
  public synchronized void syn(String n){
    for(int k=0;k<5;k++){
      i++;
      System.out.println(n+"  "+i);
    }      
  }
  
  public void run(){
     System.out.println("before: "+name);
     syn(name);
     System.out.println("after: "+name);
    }
  
  public static void main(String args[]){
    MyThread2 m1=new MyThread2("m1");
    MyThread2 m2=new MyThread2("m2");
    
    m1.start();
    m2.start();   
 }
}

and o/p from DrJava is:
before: m1
before: m2
m1  1
m2  2
m1  3
m2  4
m1  5
m2  6
m1  7
m2  8
m1  9
m2  10
after: m1
after: m2

Which is undoubtedly wrong since syn is a 
synchronized method. The o/p from command prompt is:

before: m1
m1  1
m1  2
m1  3
m1  4
m1  5
after: m1
before: m2
m2  6
m2  7
m2  8
m2  9
m2  10
after: m2

Which is what it should be, atmax the order of m1 and 
m2 can reverse.

Please see if this is a bug. If it is something else, 
or my error please inform me.
Thanks.

----------------------------------------------------------------------

You can respond by visiting: 
https://sourceforge.net/tracker/?func=detail&atid=438935&aid=1561340&group_id=44253