package com.imooc.reflect.book;

public class Book {
    private String id;
    private String name;

    public float price;

    public Book(){

    }

    public Book(String id, String name, float price) {
        this.id=id;
        this.name=name;
        this.price=price;
    }

    public String getId() {
        return id;
    }

    public void setId(String id) {
        this.id = id;
    }

    public String getName() {
        return name;
    }

    public void setName(String name) {
        this.name = name;
    }

    public float getPrice() {
        return price;
    }

    public void setPrice(float price) {
        this.price = price;
    }

    @Override
    public String toString() {
        return "Book{" +
                "id='" + id + '\'' +
                ", name='" + name + '\'' +
                ", price=" + price +
                '}';
    }
}

package com.imooc.reflect.book;

import java.lang.reflect.Constructor;
import java.lang.reflect.Field;
import java.lang.reflect.InvocationTargetException;

public class BookTest {
    public static void main(String[] args) {
        try {
            Class bookClass=Class.forName("com.imooc.reflect.book.Book");
            Constructor bookConstructor=bookClass.getConstructor(new Class[]{String.class, String.class, float.class});
            Book book=(Book)bookConstructor.newInstance(new Object[]{"001", "新华字典", 88f});
            Field[] fields=bookClass.getDeclaredFields();
            for (Field field : fields) {
                if (field.getModifiers() == 1) {
                    System.out.println("字段名：" + field.getName() + "，修饰符：public");
                }
                if (field.getModifiers() == 2) {
                    System.out.println("字段名：" + field.getName() + "，修饰符：private");
                }
            }
        } catch (ClassNotFoundException e) {
            e.printStackTrace();
        } catch (NoSuchMethodException e) {
            e.printStackTrace();
        } catch (IllegalAccessException e) {
            e.printStackTrace();
        } catch (InstantiationException e) {
            e.printStackTrace();
        } catch (InvocationTargetException e) {
            e.printStackTrace();
        }
    }
}

​