Possible to do default argument for method?

Is it possible in JAVA to give default argument to method as in c++?
I have a method that I want to call with only part of the argument:
public String UpdateTrs(String amount, String RefNo1, String RefNo2=null)
so if I have RefNo1 and no RefNo2 I could call as UpdateTrs("333", "12222"),,,

Here's an example to elaborate:
// Here's your original method:
public String UpdateTrs(String amount, String RefNo1, String RefNo2) {
    // method implementation here
// This overloads it to add the "default" value.
public String UpdateTrs(String amount, String RefNo1) {
    UpdateTrs( amount, RefNo1, null);
}This accomplishes the same thing.
Namely, calling the method with two parameters results in the third parameter being null.
Hope that's helpful.

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