adding and using new parameter to function

Question

I hava a function like this:

doSomething(){
  Object a = getA() //can return null
  // a lot of additional code
}

... but i want to add a possibility to give object a into method so i created a new method:

doSomething(){
  doSomething(null);
}

doSomething(Object a){
  if(a == null){
    a = getA()
  }  
}

but this is not correct because the object passed into method can also be null and then i wanto to it to null, not use getA() method so i did something like this:

doSomething(){
  doSomething(null, false);
}

doSomething(Object a, boolean useObject){
  if(!useObject){
    a = getA()
  }

but this seems kind of ugly. Is there a better solution?

Eran · Accepted Answer · 2015-02-17 10:29:12Z

8

How about :

doSomething()
{
    Object a = getA();
    doSomething(a);
}

doSomething(Object a)
{

}

This way, if someone calls doSomething(null) you don't call getA().

answered Feb 17, 2015 at 10:29

Eran

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Comments

arados · Accepted Answer · 2015-02-17 10:41:18Z

0

You can test if a is not null

doSomething(){
  doSomething(null);
}

doSomething(Object a){
  if(a != null){
    a = getA()
  }
}

answered Feb 17, 2015 at 10:41

arados

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