Java, non fixed parameters for method -

I'm beginning to get started on Java:

  public zero method (int Param1, int param2, int param3, int param4)  

Depends on the circumstances, sometimes I need to [Param1], or pass the parameter of [param2, param4] For, it depends on an XML setting. But it is not easy to pass the bus (0, desired value 1, desired value2, 0) - to define the parameter name and its value, the best one has to pass an associate array I have heard that this type of work is reflection Is done with.

You can pass an array:

  Public Zero Law (Int [] params)  

It is still necessary that you allocate an array of n elements, where n is the maximum number of maximum possible parameters, and can be unusable for large N It is also important for you to have a default blank value (such as 0), which tells you that there is no value for a fixed position in the array.

  int [] Parameters = new int [13]; Consultation [0] = value1; Paramage [3] = Value 4; Param [4] = value 5; Law (params);  

Or you can pass a list:

  public zero method (list & lt; integer & gt; parameter)   
 or you can pass a map: 
 
  public zero method (map & lt; integer, integer> parameter)  
 
 if You have the most efficient optional parameters, and you want to pass some of them: 
 
  map map = new hashmap