Splitting string in java containing relational operators

Question

Let's say I have a string which has relational operators:

"x<y , x=y , x<=y , x>y , x>=y" 

How can I split this?

If I use [<>=] it'll split x<=y as ( x and =y ).

Is there any simple way to do it without writing our own function to split?

Answer 1

If you want to split using any sequence of characters (and not only any character), then you should use:

[<>=]+

The + here means

Answer 2

You could have a Recursive Descent Parser. Is easy to implement and easy to mantain. You might want to look this .