Java relational operators

In Java, what interface(class) should a class implement(extend) in order to allow two in开发者_Python百科stances of the class to be comparable through relational operators like "<" or ">="?

This is not possible in Java.

If you want objects of your class to be comparable, implement Comparable.

Java does not support operator overloading, so you're out of luck. Implementing java.lang.Comparable or providing a java.util.Comparator is what you're supposed to do.