historyrecord.java

本程序用JavaME语言描述了一个运行在手机上的电子书系统

import java.io.ByteArrayInputStream;
import java.io.ByteArrayOutputStream;
import java.io.DataInputStream;
import java.io.DataOutputStream;


public class HistoryRecord {										//历史纪录类
	private String txtName = null;									//文本名称,一经设定不可更改
	private String path = null;
	private int id = 0;
	
	//构造方法
	public HistoryRecord(){
	}
	public HistoryRecord(String txtName, int id, String path){
		this.txtName = txtName;
		this.id = id;
		this.path = path;
	}
	
	//访问方法
	public String getPath(){
		return path;
	}
	public String getTxtName(){
		return txtName;
	}
	public int getID(){
		return id;
	}
	
	//加工方法
	public void setID(int id){
		this.id = id;
	}
	
	//序列化
	public byte[] serialization(){
		byte[] data = null;
		try{
			ByteArrayOutputStream baos = new ByteArrayOutputStream();
			DataOutputStream dos = new DataOutputStream(baos);
			dos.writeUTF(txtName);
			dos.writeInt(id);
			dos.writeUTF(path);
			dos.close();
			baos.close();
			data = baos.toByteArray();
		}catch (Exception e){
			e.printStackTrace();
		}
		return data;
	}
	
	//反序列化
	public static HistoryRecord deserialization(byte[] data){
		String txtName = null;
		String path = null;
		int id = 0;
		try{
			ByteArrayInputStream bais = new ByteArrayInputStream(data);
			DataInputStream dis = new DataInputStream(bais);
			txtName = dis.readUTF();
			id = dis.readInt();
			path = dis.readUTF();
			dis.close();
			bais.close();
		}catch (Exception e){
			e.printStackTrace();
		}
		HistoryRecord hr = new HistoryRecord(txtName, id, path);
		return hr;
	}
}