反射获取类的几种方法

public class Demo {

    /**
     * 反射：加载类，获得类的字节码
     * @param args
     * @throws ClassNotFoundException 
     */
    public static void main(String[] args) throws ClassNotFoundException {
        
        //1
        Class clazz = Class.forName("Person");
        
        //2
        Class clazz1 = new Person().getClass();
        
        //3
        Class clazz2 = Person.class;

    }

}