How to use <,>,== on custom classes

[Bojevnik]

Is it possible to use <>= on custom class?
for example

Code:

...
CustomClass a = new CustomClass(x);
CustomClass b = new CustomClass(y);
if(a<b)...

I already played with comparable and comparator interface but with no luck.

[JavaBean]

I did not see such a thing. What is the meaning of the operation in your mind? I mean, you can compare two integers but what can be the meaning of comparison of two classes?

[Bojevnik]

You would define the meaning of comparison.
Because that's what i thought comparabele does.

if you would call let's say a==b, progrgam would automaticly called function
compareTO and if result would be 0, the statement would be true otherwise it would be false.

EDIT: Thanks for answert, but i've heard it can't be done.

[JavaBean]

As far as i know, that is called operator overloading in C++ and Java does not have that. But of course instead of operator overloading, you can define your comparison with Comparable interface.

[remnahush]

You must implement the Comparator interface at the class