Main.setClassReader(new ClassReader(this.classpath, null));
Main.argument("-java");
Main.argument("-O");
Main.argument("-nowarn");
Main.compile(new String[]{file},
new FileSourceReader(),
new FileCompilerOutput(new File(destDir)),
new PrintStream(err));
this.errors = new ByteArrayInputStream(err.toByteArray());
return err.size() == 0;