java - Is GenericObjectPools borrowObject Method thread safe? -

in question is genericobjectpool<t> commons.apache.org thread safe? mentioned thread safe .

edited:but im having situation in multithreaded application 2 threads getting same object pool @ same time.-this statement wrong.

i moved borrowobject synchronize block , solved issue.

has faced issue earlier?

here code:

public static genericobjectpool<idocbuilderpool> documentbuilderpool = new genericobjectpool(new documentpool());  static {     documentbuilderpool.setmaxactive(1000);     documentbuilderpool.setmaxwait(30000);     documentbuilderpool.setmaxidle(-1);  } //method returns document pool called multiple threads .  public static idocbuilderpool getdocumentpool() {      return documentbuilderpool.borrowobject(); }  //the pool factory class public class documentpool extends basepoolableobjectfactory<icollabrrdocument> {      public domdocumentpool() {     }      @override     public domdocument makeobject() throws exception {         // todo auto-generated method stub         return new domdocument();     }      @override     public void activateobject(idocbuilderpool obj) throws exception {         // todo auto-generated method stub         super.activateobject(obj);     }      @override     public void destroyobject(idocbuilderpool obj) throws exception {         // todo auto-generated method stub         super.destroyobject(obj);      }      @override     public void passivateobject(idocbuilderpool obj) throws exception {         // todo auto-generated method stub         obj.release();         super.passivateobject(obj);     }      @override     public boolean validateobject(idocbuilderpool obj) {         // todo auto-generated method stub         return super.validateobject(obj);     } }     public class domdocument implements idocbuilderpool  {  private document domdocument; private documentbuilder documentbuilder; private documentbuilderfactory documentbuilderfactory;  public hashmap<org.w3c.dom.node, domelement> elementmap = new hashmap<org.w3c.dom.node, domelement>();  public long threadid;  public domdocument()  {       setdomdocument();     this.threadid = thread.currentthread().getid();  }  public void setdomdocument() throws      this.documentbuilderfactory = documentbuilderfactory.newinstance();           this.documentbuilderfactory.setnamespaceaware(true);         this.documentbuilder = this.documentbuilderfactory.newdocumentbuilder();         this.domdocument = this.documentbuilder.parse(new bytearrayinputstream("<root/>".getbytes()));   } 

}

the documentation of poolableobjectfactory states:

poolableobjectfactory must thread-safe.

looking @ code, thing thread unsafe call obj.release();. possibly problem is.

apart looks ok...