I have a Generic Class with two type variables, which implements java.lang.Comparable.
public class DoubleKey<K,J> implements Comparable<DoubleKey<K,J>>{ private K key1; private J key2; public DoubleKey(K key1, J key2){ this.key1 = key1; this.key2 = key2; } public K getFirstKey(){ return this.key1; } public J getSecondKey(){ return this.key2; } // need for Comparable interface public int compareTo(DoubleKey<K,J> aThat){ ... } }
Becuase i implemeted it with Comparable, I need to write the compareTo() method. Because K, J can be of ANY type, I'm having problems on how to compare them completely. Is there a way to be able to catch all possible types (Primitive, Wrapper, Object) in the comparison? Thanks for the help!
Best Answer
so to summarize the said above and to puzzle it together into a working code this is: