JavaCompiler outputs .class files in wrong folder

Question

I'm trying to compile some code using the Compiler API. The code belongs to package "compile", however, upon compiling the code, the class file ends up in the root directory rather than in the "compile" folder as I was expecting. The compiler seems to be ignoring the package info. What am I doing wrong here?
package compile;
import java.io.IOException;
import java.net.URI;
import java.util.Arrays;
import javax.tools.*;
import javax.tools.JavaCompiler.CompilationTask;
public class CompilerTest {
     private static final String code =
          "package compile;\n" +
          "class TestClass {\n" +
          "     public static void main(String[] args) {\n" +
          "          System.out.println(\"Hello World!\");\n" +
          "     }\n" +
          "}\n";
     public static void main(String[] args) {
          JavaStringObject source = new JavaStringObject("compile.TestClass", code);
          Iterable<? extends JavaFileObject> sources = Arrays.asList( source );
          JavaCompiler compiler = ToolProvider.getSystemJavaCompiler();
          CompilationTask task = compiler.getTask(null, null, null, null, null, sources);
          System.out.println( task.call() );
     /** Java source from a String */
     private static class JavaStringObject extends SimpleJavaFileObject {
          private final String code;
          public JavaStringObject(String className, String content) {
               super( URI.create("string:///"+className.replace('.','/')+Kind.SOURCE.extension), Kind.SOURCE );
               code = content;
          public CharSequence getCharContent(boolean ignoreEncodingErrors) throws IOException {
               return code;
}Thanks

Answer 1

How do we know it is wrong?
You are not showing where you compile and run this from.
Also you are making it more confusing than it needs to be because your test class and the data for the compilation have the same package - I'd put CompilerTest and TestClass into different packages just to remove the potential for confusion.
You are not specifying a -d option to the compiler.
You are not specifying what the working directory is and the classpath when you run your test.
You are not telling us where the generated class file is placed.
When you say root directory do you mean the file system root, or the working directory or what?
With some more information we might be able to either reproduce your fault or alternatively explain to you why what you are observing is the expected behaviour.
Bruce