JavaCompiler can output in a different folder?

Hi,

I'm currently using Java6 and I'm compiling my class with the
JavaCompiler.

When I compile my class with a specific file, the output .class is
copied just aside the java file.
When I compile my class without specifiying a folder (with the
following code)

///////
final GaeaJavaSourceFromString javaFileObject = new
GaeaJavaSourceFromString("Data", code)
final Iterable<? extends JavaFileObject> compilationUnits =
Arrays.asList(new SimpleJavaFileObject[] { javaFileObject });
final Iterable<String> options = Arrays.asList(new String[] {"-
verbose", "-Xlint" });
boolean compilation = _compiler.getTask(null, _fileManager,
_diagnostic, options, null, compilationUnits).call();

code = "public class Data { }";
_compiler = ToolProvider.getSystemJavaCompiler();
_fileManager = _compiler.getStandardFileManager(null, null, null);
_diagnostic = new DiagnosticCollector<JavaFileObject>();

and
public class GaeaJavaSourceFromString extends SimpleJavaFileObject {
    final String code;

    public GaeaJavaSourceFromString(String name, String code) {
        super(URI.create("string:///" + name.replace('.','/') +
Kind.SOURCE.extension),
              Kind.SOURCE);
        this.code = code;
    }

    @Override
    public CharSequence getCharContent(boolean ignoreEncodingErrors) {
        return code;
    }
}
/////////

The output .class is copied in the folder where the program is
started.

I would like to output this class in a specific folder... is it
possible? I know that Eclipse has the property "Output Folder". I
don't know if I should simply move the file ? Is there any option i
can set in the compiler to output the .class file somewhere?