Compiling directories with JavaCompiler

Question

I have the following which code which is being used to compile single files with JavaCompiler:

JavaCompiler compiler = ToolProvider.getSystemJavaCompiler();
DiagnosticCollector<JavaFileObject> diagnostics = new DiagnosticCollector<JavaFileObject>();
StandardJavaFileManager fileManager = compiler.getStandardFileManager(diagnostics, null, null);
Iterable<? extends JavaFileObject> compilationUnits = fileManager.getJavaFileObjectsFromStrings(Arrays.asList(file.getAbsolutePath()));
JavaCompiler.CompilationTask task = compiler.getTask(null, fileManager, diagnostics, null, null, compilationUnits);
boolean success = task.call();
fileManager.close();

My question is: How do I change this to compile all source files in a particular directory?

For better help sooner, post an SSCCE.

Andrew Thompson
– Andrew Thompson

2012-06-09 01:05:11 +00:00
Commented Jun 9, 2012 at 1:05 — Andrew Thompson
– Andrew Thompson, Commented Jun 9, 2012 at 1:05

JB Nizet · Accepted Answer · 2012-06-08 21:56:53Z

1

Get all the files from the directory (using directory.listFiles()), and pass the resulting array to getJavaFileObject(File...)

answered Jun 8, 2012 at 21:56

JB Nizet

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2 Comments

Jeff Demanche Over a year ago

This gives me: Exception in thread "AWT-EventQueue-0" java.lang.IllegalArgumentException: directories not supported at com.sun.tools.javac.util.DefaultFileManager$RegularFileObject.<init>

JB Nizet Over a year ago

Make sure to filter out the unwanted files using listFiles(FileFilter) : docs.oracle.com/javase/6/docs/api/java/io/…. You really need to learn reading the API doc. It's intended to be read.

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