java - Dereferencing possible? -

consider following code:

public class test {      static private volatile integer number1 = 42;     static private volatile integer number2 = 42;      public static void main(string[] args) {         test test = new test();         test.changeinteger(number1);         system.out.println(number1);     }      public void changeinteger (integer number) {         number = new integer(3);     } } 

i change value of either number1 or number2 depending on argument pass method changeinteger. doesn't work. there way make work in java without using reflection?

to clarify: want call changeinteger(number1) change field number1.

just add @margus's answer. in books, if variable name ever contains number, number1, that's sign aren't doing right. use array.

on other hand, if variables named, may better of using hashtable. names of fields in class meant hard-coded. if ever need non-hard-coded "field names", aren't fields. data! hashtable / dictionary correct route in java.