Solved

Can I reference compile time errors?

Posted on 2004-09-27
7
157 Views
Last Modified: 2010-03-31
I'm working on a small IDE for personal use, but I'm having trouble with error handling. I'm using Runtime.getRuntime().exec( ... ) to compile and run java programs. Ultimately telling the system to execute javac.  Also, I'm using a class called RunProcess to redirect stdout and stderr to a JTextArea (my error log window).

When a runtime exception occurs, I'm simply logging the error to the JTextArea as it would be output to the console. However, when a compile time errors occur, I would like to display the errors in an organized tree, rather than the format that it would have been outputed to the console, which would look something like this:

Test.java:12: cannot resolve symbol
symbol  : method setPrefferedSize(java.awt.Dimension)
location : class javax.swing.JLabel
     myLabel.setPrefferedSize(new Dimension(400,250));
             ^1 error

Is there a way to get a reference to some sort of StackTrace, or Exception that I can use to represent this error?  I really don't want to have to go and do a bunch of string parsing on what javac gave me  :P

Is it perhaps possible using another method of compiling? Such as using the com.sun.tools.javac.Main tool, and javac() to compile? I can't find the documentation for that class anywhere, so I can't figure it out.  I can just find code snippits around the web.

Thanks, and I hope that wasn't too confusing.
0
Comment
Question by:Breadstick
  • 4
  • 3
7 Comments
 
LVL 86

Expert Comment

by:CEHJ
ID: 12164188
You just need to capture the error stream of javac and put those in your errors area
0
 
LVL 2

Author Comment

by:Breadstick
ID: 12164611
Maybe I wasn't clear.  I can capture the error stream fine, but I don't want to display the errors as javac would display them.  I haven't used an IDE that simply outputs the error in the same format as you would get from javac.  They all display them in an easy to read format, usually one line per error, and usually in a list or tree.
0
 
LVL 86

Expert Comment

by:CEHJ
ID: 12164712
Just capture it as a String then you can do what you want with it. Write the stream output to a StringWriter
0
Is Your AD Toolbox Looking More Like a Toybox?

Managing Active Directory can get complicated.  Often, the native tools for managing AD are just not up to the task.  The largest Active Directory installations in the world have relied on one tool to manage their day-to-day administration tasks: Hyena. Start your trial today.

 
LVL 2

Author Comment

by:Breadstick
ID: 12164850
> I really don't want to have to go and do a bunch of string parsing on what javac gave me  :P

Is there any other way?
0
 
LVL 86

Accepted Solution

by:
CEHJ earned 50 total points
ID: 12165012
Don't think so ;-)
0
 
LVL 2

Author Comment

by:Breadstick
ID: 12176311
Ouch, that stinks.  Do you know where I can find the documentation for com.sun.tools.javac.Main then?
0
 
LVL 86

Expert Comment

by:CEHJ
ID: 12302529
8-)

Not easy to find that doco - Sun classes are 'undocumented'
0

Featured Post

DevOps Toolchain Recommendations

Read this Gartner Research Note and discover how your IT organization can automate and optimize DevOps processes using a toolchain architecture.

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

For customizing the look of your lightweight component and making it look lucid like it was made of glass. Or: how to make your component more Apple-ish ;) This tip assumes your component to be of rectangular shape and completely opaque. (COD…
Go is an acronym of golang, is a programming language developed Google in 2007. Go is a new language that is mostly in the C family, with significant input from Pascal/Modula/Oberon family. Hence Go arisen as low-level language with fast compilation…
Viewers will learn about arithmetic and Boolean expressions in Java and the logical operators used to create Boolean expressions. We will cover the symbols used for arithmetic expressions and define each logical operator and how to use them in Boole…
Viewers will learn one way to get user input in Java. Introduce the Scanner object: Declare the variable that stores the user input: An example prompting the user for input: Methods you need to invoke in order to properly get  user input:

778 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question