controller:

public obj testobj {
       get {
        if(testobj==null)
         testobj = new obj();

         return testobj;
         }
        set;
         }

VF page:

i'm using like this:

<apex:inputfield value="{!testobj.field}"/>  

i'm not able to pass the values entered in this field to apex code as i want to store the value enterd here in other place. i'm getting null value while debugging. can somebody help me whether my getter setter method is correct or not?