Java 反射创建class类的创建方式有哪些
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Java 反射创建class类的创建方式有哪些
// 测试class类的创建方式有哪些
public class Test01 {
public static void main(String[] args) throws ClassNotFoundException {
Person person = new Student();
System.out.println("这个人是:"+person.name);
// 方式一:通过对象获得
Class c1 = person.getClass();
System.out.println(c1.hashCode());
// 方式二:forname获得
Class c2 = Class.forName("reflectionStudy.Student");
System.out.println(c2.hashCode());
// 方式三:通过类名.class获得
Class c3 = Student.class;
System.out.println(c3.hashCode());
// 方式四:基本内置类型的包装类都有一个Type属性
Class c4 = Integer.TYPE;
System.out.println(c4);
// 获得父类类型
Class c5 = c1.getSuperclass();
System.out.println(c5);
}
}
class Person{
String name;
public Person(){}
public Person(String name){
this.name = name;
}
@Override
public String toString() {
return "Person{" +
"name='" + name + '\'' +
'}';
}
}
class Student extends Person{
public Student(){
this.name = "学生";
}
}
class Teacher extends Person{
public Teacher(){
this.name = "老师";
}
}