Java的IO流讲解代码: File 类、RandomAccessFile 类、字节流（文件字节流、缓冲字节流、基本数据类型

package com.xiaoshan.demo3; import java.io.*; public class ObjectStreamExample { public static void main(String[] args) { // 创建一个对象 Person person = new Person("John", 30); // 将对象序列化到文件中 String filename = "person.ser"; serializeObject(person, filename); System.out.println("Person对象已序列化到文件：" + filename); // 从文件中反序列化对象 Person deserializedPerson = deserializeObject(filename); System.out.print("从文件" + filename + "中反序列化出的Person对象："); System.out.println(deserializedPerson); } // 序列化对象并保存到文件 private static void serializeObject(Object object, String filename) { try (FileOutputStream fileOutputStream = new FileOutputStream(filename); ObjectOutputStream objectOutputStream = new ObjectOutputStream(fileOutputStream)) { objectOutputStream.writeObject(object); } catch (IOException e) { e.printStackTrace(); } } // 从文件中反序列化对象 private static Person deserializeObject(String filename) { Person person = null; try (FileInputStream fileInputStream = new FileInputStream(filename); ObjectInputStream objectInputStream = new ObjectInputStream(fileInputStream)) { person = (Person) objectInputStream.readObject(); } catch (IOException | ClassNotFoundException e) { e.printStackTrace(); } return person; } } // 要序列化的对象类需要实现 Serializable 接口 class Person implements Serializable { private String name; private int age; public Person(String name, int age) { this.name = name; this.age = age; } public String getName() { return name; } public int getAge() { return age; } @Override public String toString() { return "Person [name=" + name + ", age=" + age + "]"; } }