Java反射——动态加载类

public class DynamicLoadClass {

public static void main(String[] args) throws InstantiationException, IllegalAccessException, ClassNotFoundException{
String animalName="Cat";
Animal animal = null;
switch (animalName){
case "Cat":
animal=(Animal)Class.forName("ShuiTian.NaiLuo.Reflect.Cat").newInstance();
break;
case "Dog":
animal=(Animal)Class.forName("ShuiTian.NaiLuo.Reflect.Dog").newInstance();
break;
}
System.out.println(animal);
System.out.println(animal.getClass().getSimpleName());
}
}

interface Animal{}
class Cat implements Animal{}
class Dog implements Animal{}

public static void main(String[] args) {
Class stringClass = String.class;// string类的类类型，String类字节码
Class intClass = int.class; // int的类类型
Class c3 = Double.class;
Class voidClass = void.class;

System.out.println(stringClass.getName());
System.out.println(intClass.getName());
System.out.println(c3.getSimpleName());
System.out.println(voidClass.getName());
}