I've been using a lot of Java for school. Because I run Linux, this means going into the command line and running javac, sometimes up to 5 different files for one program. And if I have one thing wrong, I have to do it all over again. So finally, I got tired of it and wrote this:

#!/usr/bin/perl
my $file;
my $last = 1;
while (@ARGV and $last) {
    last if ($ARGV[0] =~ /^\-a$/);
    $file = shift;
    die "$file\.java does not exist\!\n" unless (-e $file."\.java");
    system ("javac", $file.".java");
}
shift if !@ARGV;
exec ("java", $file, @ARGV);

[download]

For every argument, provided that the file exists, it compiles the .java, the runs the last file it compiles. If you have "-a", it passes the arguments after that to the program! I know it's not much, but it's my first legitimate, made for use Perl script, so I thought I'd post it.

Now, if only I could tell it to not run if I get a compile error...

UPDATE: I got the code to die if there was a compile error, but still print out the error messages. Now it looks like this:

#!/usr/bin/perl
my $file;
while (@ARGV and $last) {
    if ($ARGV[0] =~ /^\-a$/) {
        shift;
        last;
    }
    $file = shift;
    die "$file\.java does not exist\!\n" unless (-e $file."\.java");
    $error= system("javac", $file."\.java");
}
die "Compiling error, could not run!\n" if ($error);
shift if !@ARGV;
exec ("java", $file, @ARGV);

[download]

In reply to Java Auto-Compile by JediMasterT

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