反射的源头，Class类的实例

package lianxi1;

import org.junit.Test;

public class TestReflection {
//如何获取Class的实例
@Test
  public void test1() throws ClassNotFoundException{
    //1.通过运行时类本身的class属性
    Class clazz1 = Person.class;
    System.out.println(clazz1.getName());
    //2.通过运行时类的对象获取
    Person p = new Person("foj",23);
    Class clazz2 = p.getClass();
    System.out.println(clazz2.getName());
    //3.通过Class的静态方法获取，体现反射的动态性
    String s1 = "lianxi1.Person";
    Class clazz3 = Class.forName(s1);
    //clazz3.newInstance();
    System.out.println(clazz3.getName());
    //4.通过类的加载器
    ClassLoader classloader = this.getClass().getClassLoader();
    Class clazz4 = classloader.loadClass(s1);
    System.out.println(clazz4.getName());
    
}
}