JDK6.0中如何使用Compiler API

public class CompilerAPITester {
   private static String JAVA_SOURCE_FILE = "DynamicObject.java";
   private static String JAVA_CLASS_FILE = "DynamicObject.class";
   private static String JAVA_CLASS_NAME = "DynamicObject";
   public static void main(String[] args) {
       JavaCompiler compiler = ToolProvider.getSystemJavaCompiler();
       StandardJavaFileManager fileManager = compiler.getStandardFileManager(null, null, null);
       generateJavaClass();        try {
           //将产生的类文件拷贝到程序的ClassPath下面,下面这一行代码是特定于Windows＋IntelliJ IDEA 6.0项目,不具有移植性
           Runtime.getRuntime().exec("cmd /c copy "+JAVA_CLASS_FILE+" classesproductionJDK6Features");
           Iterable sourcefiles = fileManager.getJavaFileObjects(JAVA_SOURCE_FILE);
           compiler.getTask(null, fileManager, null, null, null, sourcefiles).call();
           fileManager.close();
           Class.forName(JAVA_CLASS_NAME).newInstance();//创建动态编译得到的DynamicObject类的实例
       } catch (Exception ex) {
           ex.printStackTrace();
       }
   }
   public static void generateJavaClass(){
       try {
           FileWriter fw = new FileWriter(JAVA_SOURCE_FILE);
           BufferedWriter bw = new BufferedWriter(fw);
           bw.write("public class "+JAVA_CLASS_NAME+"{");
           bw.newLine();
           bw.write("public "+JAVA_CLASS_NAME+"(){System.out.println("In the constructor of DynamicObject");}}");
           bw.flush();
           bw.close();
       } catch (IOException ex) {
           ex.printStackTrace();
       }
   }
}