student.java~1~

是学习swing 开发的基本程序

package com.lu.cheng.xin.qq;



import java.io.BufferedOutputStream;
import java.io.FileOutputStream;
import java.io.ObjectOutputStream;
import java.io.Serializable;

class Student implements Serializable{//erializable是空接口 需要实现方法
        String name;
        String sex;
        int age;

        static String school = null;//这个不会被序列化,
        transient float weight = 0;//这个也不会被序列化,保存也不会保存,恢复出来的都是默认值

        public Student(String name,String sex,int age){
                this.setName(name);
                this.setSex(sex);
                this.setAge(age);
        }

        public void setName(String n){
                this.name = n;
        }
        public String getName(){
                return name;
        }
        public void setSex(String s){
                this.sex = s;
        }
        public String getSex(){
                return sex;
        }
        public void setAge(int a){
                this.age = a;
        }
        public int getAge(){
                return age;
        }

        public static void test3() throws Exception{
                Student s = new Student("王八","母",100);

        //以下二个不会被序列化，也保存不了，恢复得到默认值
                s.school = "xdf";
                s.weight = 88;
        //以下保存对象 序列化 只序列化常员变量和类型，不会序列化方法、静态的属性 还有transient修饰的东西

                 ObjectOutputStream out = new ObjectOutputStream(
                                   new BufferedOutputStream(
                                                   new FileOutputStream("c:\\test.dat",true)));
                 out.writeObject(s);
                 out.flush();
                 out.close();
        }


}