• Configuring Vim for Java Development, Part 1

    I haven’t done full time Java
    development
    in about 5 years. Back
    then, I started by using NetBeans as my
    development environment, but later transitioned to IntelliJ
    IDEA
    . At the time, I thought IDEA was a
    brilliant IDE, though like all Java desktop applications I’ve used, it was
    slow, consumed memory like it was going out of style, and its non-native UI
    never blended in well with the operating system.

    During the five year hiatus from Java development, I became addicted to
    Vim. I edit everything I can in Vim: code, email messages (via
    mutt or
    MacVim), documents (one of the reasons
    I use LaTeX for work documents is so I can
    use Vim to edit them), and the shell. My muscle memory is now mapped to
    Vim, and it’s very uncomfortable to be stuck in a foreign editing
    environment.

    Now that I’ve returned to Java development, I’d like to get an environment
    configured where I can use Vim as my primary editor. I’ve downloaded the
    latest version of IDEA and gave it a test run. Someone wrote a Vim plugin
    for it, but I’ve found it seriously lacking. Some of the most basic
    navigation commands don’t work (Ctrl-D, Ctrl-U, Ctrl-W, and others), making
    a typical editing session pretty frustrating.

    I also briefly tried Eclipse, but quickly gave
    up. My first impression of the UI is that it’s clunky and unintuitive, slow
    (just starting the program on my Mac requires the Dock icon to bounce
    roughly fifty thousand times), and the “workspace” paradigm doesn’t make a
    whole lot of sense.

    I’m now back to using Vim, specifically
    MacVim, a great Vim port for the Mac.
    I’ve searched around on the Internet for different ways to configure Vim
    for Java. They’re of widely varying quality, and can take some tinkering to
    get to work in a general way. I figured I’d start sharing those tips I find
    useful here as I collect them.

    The first one I’ve found is just a simple configuration to compile your
    Java source code within Vim via an Ant build
    file. I’ve seen many different configurations floating around on the
    Internet, but I think I’ve put one together that will work for multiple
    projects (no hardcoded directory paths), is simple (minimizing convoluted
    configuration commands), and lets you move among compiler errors within
    Vim.

    To compile your Java source code via an Ant build file, add the following
    line to your .vimrc file:

    autocmd BufNewFile,BufRead *.java set makeprg=ant -emacs -find build.xml build
    

    This line sets Vim’s make
    command
    to call Ant directly,
    instructing it to search the current and parent directories for the build
    file. My build file is called build.xml. I also pass it the Ant target
    that actually does the compilation – build in my case – though I plan
    to look into parameterizing this command so I can potentially run unit
    tests or perform other commands without filling my .vimrc with lots of
    duplication.

    The -emacs portion of the command passed to Ant gets javac to print
    compiler errors “without adornments.” This should help you avoid the need
    to add ==convoluted expressions== to your .vimrc to enable Vim can parse
    the compiler errors.

    You can now perform a build from within Vim by typing the following:

    :make
    

    When the build is complete, you can navigate any compiler errors with the
    following commands:

    • Enter: Go to the first error message.
    • :cnext: Go to the next error message.
    • :cprevious: Go to the previous error message.
    • :cc: Vim will shorten the error message if needed to fit within the
      space available. This command will show the whole error message.
    • :clist: List all compiler errors.
    • :clist!: Shows all lines of the compiler output, not just those bits
      that Vim recognized.
    • :cfirst: Go to the first error message.
    • :clast: Go to the last error message.
    • :cc 2: Go to error number 2.

    See the Vim
    documentation
    for the full
    range of commands.

    I’ll continue to post more as I continue to flesh out my configuration.

  • lemonodor:

    Video for Futureshock’s Late at Night.  Been watching this repeatedly.

  • In our time it is broadly true that political writing is bad writing. Where it is not true, it will generally be found that the writer is some kind of rebel, expressing his private opinions, and not a ‘party line’. Orthodoxy, of whatever colour, seems to demand a lifeless, imitative style.