Java relection

//原类

package mypackage;

public class forclass {
 public static String name="xiaoMing";
 public static int     age=12;
 
 public  void  prinfMethod()
 {
  System.out.println("gaowh  print");
 }
}

//普通方法实例化

package mypackage;

public class commonInvork {

 public static void main(String[] args) {

  forclass my=new forclass();
  my.prinfMethod();
 }

}

//For class invoke

package mypackage;

import java.lang.reflect.Field;

public class forClassInvoke{
 
 public static void main(String args[]) throws Exception{
//    Class<?> my=Class.forName("mypackage.forclass");
 // newInstance of reflected class, then invoke the method of the reflected class
  //this method can print all static and non static constants or methods
//    forclass newobject=(forclass)my.newInstance();
//    newobject.prinfMethod();
//    System.out.println(newobject.age);
//   

   Class ownerClass = Class.forName("mypackage.forclass");  
   //Field[] fields= ownerClass.getDeclaredFields(), it is used to get
   //all public and private constants ,but getFields is used to get only punlic constants
   Field[] fields= ownerClass.getFields();
   for(int i=0;i<fields.length;i++)
   {   
    //find the filedname and field type
    System.out.println("zz="+fields[i].getName()+"==>"+fields[i].getType()); 
   }  
   //get the value of the static field
      Field field = ownerClass.getField("name");           
      Object value = field.get(ownerClass);  
      //print value
      System.out.println(value);

 }
}