my dog learned polymorphism*
The moose likes Beginning Java and the fly likes manipulate strings with integers and operators Big Moose Saloon
  Search | Java FAQ | Recent Topics | Flagged Topics | Hot Topics | Zero Replies
Register / Login
JavaRanch » Java Forums » Java » Beginning Java
Bookmark "manipulate strings with integers and operators " Watch "manipulate strings with integers and operators " New topic

manipulate strings with integers and operators

ashleys smith

Joined: Sep 25, 2011
Posts: 1
I am building a calculator for doubles and one of the things I wanted to do was was take in negative numbers and exponents numbers . But I am having trouble doing that and I was wondering if someone could help me figure it out I set up a pattern from the E and e. The user input can look like that as a String = "-(a1+-a2)*10E-10" and it can also look like this "(-a1+-a2)*10E3" anyone know how I can make it look like this " ( -a1 + -a2 ) * 10000 " so I can apply the split method and parse it to the stacks =)
Wouter Oet
Saloon Keeper

Joined: Oct 25, 2008
Posts: 2700

Hi and welcome to the javaranch,

You could search for the E followed by a number and replace what with the corresponding value.

"Any fool can write code that a computer can understand. Good programmers write code that humans can understand." --- Martin Fowler
Please correct my English.
I agree. Here's the link:
subject: manipulate strings with integers and operators
Similar Threads
Garbage collection
file accessed by two threads and two objects
Doubt in one question
Garbage Collection (Cyclic references) Also known as Object Island
exam lab gc question