Welcome to the Java Programming Forums
The professional, friendly Java community. 21,500 members and growing!
The Java Programming Forums are a community of Java programmers from all around the World. Our members have a wide range of skills and they all have one thing in common: A passion to learn and code Java. We invite beginner Java programmers right through to Java professionals to post here and share your knowledge. Become a part of the community, help others, expand your knowledge of Java and enjoy talking with like minded people. Registration is quick and best of all free. We look forward to meeting you.
>> REGISTER NOW TO START POSTING
Members have full access to the forums. Advertisements are removed for registered users.
LinkBack URL
About LinkBacks
Need help to format input.
When i input a number in my append i need to have 3 - in it. for example when i have this number 12345678 I need it to write to file 123-45-678. I would think i need to use the format thing but need a nudge in the right direction.
ja.append(add0+"+");
Related threads:
Re: Need help to format input.
Append of what? A string? What is ja? I don't understand the rules you describe. I recommend breaking what you need into these rules, its easier for us and a computer to understand.
Re: Need help to format input.
String ja = textArea;
add0 = input number variable;
I need the input number to be 12345678; (input from user 8 numbers)
but when its output (write to .dat) it gets written as 123-45-678:
How do i accoplish this in code.
Re: Need help to format input.
What did you try? Presuming you want a dash after the third and fifth number - did you try a loop? Have you tried breaking the input string into substrings?Originally Posted by miller4103
Re: Need help to format input.
I have never heard about substrings. What are they. Also i will try a loop right now. I dont know why i didnt think of a loop although i dont know how to get it to do that.
would i use an if-for or while loop? and how do i get the loop to count the numbers?
Re: Need help to format input.
The API is worth studying for all classes that you use. See String (Java Platform SE 6) and the substring method.I have never heard about substrings. What are they.
Write it out slowly on paper - loop through the string one character at a time and consider at which positions you need to insertAlso i will try a loop right now. I dont know why i didnt think of a loop although i dont know how to get it to do that.
would i use an if-for or while loop? and how do i get the loop to count the numbers?
Re: Need help to format input.
Thank you very much for the nudge.
ja.append(add0.substring(0,3)+"-"+add0.substring(3,5)+"-"+add0.substring(5)+"\n");
Re: Need help to format input.
You're welcome
Reply With Quote