java - 我怎样才能使这个序列化工作？

Question

这个想法是关于序列化这个框代码。该程序用于构建闪存卡，当应用程序退出到文件中时，我想使用序列化来保存闪存应用程序框的状态，并在启动时加载该文件。所以我不必从头开始重做所有的抽认卡。盒子代码如下:

import java.util.ArrayList;
import java.util.Iterator;



public class Box implements java.io.Serializable {
private ArrayList<Flashcard> cards;
private double prossibility;
private double pivot;   //determine the box's selected scope [pivot -          prossibility,pivot)
public Box(){
    cards = new ArrayList<Flashcard>();
    prossibility = 0.0;
    pivot = 0.0;
}
public Box(double prossibility,double pivot){
    this.cards = new ArrayList<Flashcard>(); 
    this.prossibility = prossibility;
    this.pivot = pivot;
}
public Box(ArrayList<Flashcard> cards){
    this.cards = cards;
}


public ArrayList<Flashcard> getCards() {
    return cards;
}

public void setProssibility(double prossibility){
    this.prossibility = prossibility;
}
public double getProssibility(){
    return prossibility;
}

public void setPivot(double pivot){
    this.pivot = pivot;
}
public double getPivot(){
    return pivot;
}

public void addCard(Flashcard card){
    cards.add(card);
}
public int searchCard(String challenge){
    Iterator<Flashcard> it = cards.iterator();
    int index = 0;
    while(it.hasNext()){
        Flashcard temp = (Flashcard)it.next();
        if(temp.getChallenge().equals(challenge)){
            break;
        }
        ++index; 
    }
    if(index >= cards.size())
        index = -1;
    return index;
}
public void removeCard(String challenge){
    int index = searchCard(challenge);
    if(index >= 0)
        cards.remove(index);
}

}

我的抽认卡类(class)如下:

enum ESide{
FRONT,  //challenge side
BACK    //response side
};
public class Flashcard implements Cloneable{
private String challenge;
private String response;
private ESide side;
private int boxIndex;
public Flashcard(){
    challenge = new String();
    response = new String();
    side = ESide.BACK;
    boxIndex = 0;
}
public Flashcard(String challenge, String response, ESide side){
    this.challenge = challenge;
    this.response = response;
    this.side = side;
    this.boxIndex = 0;
}
public Flashcard(String challenge, String response){
    this.challenge = challenge;
    this.response = response;
    this.side = ESide.BACK;
    this.boxIndex = 0;
}


public void setChallenge(String challenge){
    this.challenge = challenge;
}
public String getChallenge(){
    return challenge;
}

public void setResponse(String response){
    this.response = response;
}
public String getResponse(){
    return response;
}

public void setSide(ESide side){
    this.side = side;
}
public ESide getSide(){
    return side;
}

public void setBoxIndex(int index){
    this.boxIndex = index;
}
public int getBoxIndex(){
    return boxIndex;
}

public void flipSide(){
    if(side == ESide.BACK)
        side = ESide.FRONT;
    else
        side = ESide.BACK;
}

public Object clone(){
    Flashcard o = null;
    try {
        o = (Flashcard)super.clone();
    } catch (CloneNotSupportedException e) {
        // TODO Auto-generated catch block
        e.printStackTrace();
    }
    return o;
}
public boolean equals(Object o){
    if(this == o)
        return true;
    if(o == null)
        return false;
    if(!(o instanceof Flashcard))
        return false;
    Flashcard temp = (Flashcard)o;
    if(!temp.challenge.equals(this.challenge) || !temp.response.equals(this.response)){
        return false;
    }

    return true;
}

}

我所做的序列化代码是这样的:

import java.io.*;

public class Savingbox implements Serializable {
public static void main(String[] args){
    Box e = new Box();

那么如何让 savingbox 类保存用户刚刚使用的结果呢？

Answer 1

据我了解，您希望将抽认卡对象保存到文件中，然后将其读回。以下链接解释了如何操作: How to write and read java serialized objects into a file