student.java~9~

来自「提供了常用的JAVA技术的示例」· JAVA~9~ 代码 · 共 51 行

package Student;

import java.io.*;

public class Student implements java.io.Serializable{
    int id;
    String name;
    int age;

    public Student(int id,String name,int age){
        this.id=id;
        this.name=name;
        this.age=age;
    }
    private void writeObject(ObjectOutputStream out)throws IOException{
        out.writeInt(id);
        out.writeInt(age);
        out.writeUTF(name);
    }
    private void readObject(ObjectInputStream in)throws IOException{
        id=in.readInt();
        age=in.readInt();
        name=in.readUTF();
    }
    // main
    public static void main(String a[])throws IOException,ClassNotFoundException{
        Student stu=new Student(2,"zhang",25);
        FileOutputStream fout=new FileOutputStream("data.ser");
        ObjectOutputStream sout=new ObjectOutputStream(fout);
        try{
            sout.writeObject(stu);
            sout.close();
        }
        catch(IOException e){
            System.out.println(e.getMessage());
        }
        stu=null;
        FileInputStream fin=new FileInputStream("data.ser");
        ObjectInputStream sin=new ObjectInputStream(fin);
        try{
            stu=(Student)sin.readObject();
            sin.close();
        }
        catch(IOException e){
            System.out.println(e.getMessage());
        }
        System.out.println("student.name="+stu.name);
        System.out.println("student.id="+stu.id);
        System.out.println("student.age="+stu.age);
    }
}