asking about lazy initilization in java

[kumar abhay]

hi there,
i hope u ppl r doing fine.i wanna know about "lazy or delayed initilization" in java.plz let me know with a demonatration.
thanks in advence
takle care
kumar abhay

[karl koch]

hi

lazy instantiation is used to delay the creation of expensive object. expensive objects are objects which take lots of time/resources to create.
the creation of this objects is delayed until the are needed

public class Lazy {
  private ExpensiveObject expObj;
  ....
  other stuff goes here
  ....
  public ExpensiveObject getExpensiveObject() {
    if (expObj == null) {
      expObj = new ExpensiveObject();
    }
    return expObj;
  }
}
  

k
[ March 07, 2002: Message edited by: karl koch ]