通过反射机制直接操作属性
import java.lang.reflect.Field;
public class InvokeFieldDemo {
public static void main(String[] args) throws Exception {
Class<?> cl = null;
Object obj = null;
cl = Class.forName(PersonZ.class.getName());
obj = cl.newInstance();
Field nameField = null;
Field ageField = null;
nameField = cl.getDeclaredField("name");
ageField = cl.getDeclaredField("age");
nameField.setAccessible(true);
nameField.set(obj, "Vonkenmo");
ageField.setAccessible(true);
ageField.set(obj, 20);
System.out.println("name:" + nameField.get(obj));
System.out.println("age :" + ageField.get(obj));
}
}