Java中RTTI与反射机制的区别有什么

package typeinfo;class Base {  static { System.out.println("加载Base类"); }}class Derived extends Base {   static { System.out.println("加载Derived类");}}public class Test {  static void printerInfo(Class c) {    System.out.println("类名: " + c.getName() +      "是否接口? [" + c.isInterface() + "]");  }  public static void main(String[] args) {    Class c = null;    try {      c = Class.forName("typeinfo.Derived");    } catch (ClassNotFoundException e) {      System.out.println("找不到Base类");      System.exit(1);    }    printerInfo(c);    Class up = c.getSuperclass(); // 取得c对象的基类    Object obj = null;    try {      obj = up.newInstance();    } catch (InstantiationException e) {      System.out.println("不能实例化");      System.exit(1);    } catch (IllegalAccessException e) {      System.out.println("不能访问");      System.exit(1);    }    printerInfo(obj.getClass());  } }