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 ">="?

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This is not possible in Java.

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

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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.