note.java

J2ME编的手机助手 文件下载解压缩以后,是一个NetBeans的工程文件,如果有NB的朋友,可以直接打开编辑 源文件在src目录下面,可执行文件在dist目录下 功能如下 1

/*
 * Note.java
 *
 * Created on 2007年3月15日, 上午10:37
 *
 * To change this template, choose Tools | Template Manager
 * and open the template in the editor.
 */

package net.bccn.account.model;

import java.io.ByteArrayInputStream;
import java.io.ByteArrayOutputStream;
import java.io.DataInputStream;
import java.io.DataOutputStream;
import java.io.IOException;
import java.util.Calendar;
import java.util.Date;
import javax.microedition.rms.RecordComparator;
import net.bccn.account.util.Record;
import net.bccn.account.util.Util;

/**
 *
 * @author hadeslee
 */
public class Note implements Record{
    private int id;
    private String content;
    private Date date;
    private Date from;//起始日期
    public static final String NAME="Note";
    /** Creates a new instance of Note */
    public Note() {
        
    }
    
    public void fromBytes(byte[] data) throws IOException {
        ByteArrayInputStream bin=new ByteArrayInputStream(data);
        DataInputStream din=new DataInputStream(bin);
        String name=din.readUTF();
        if(!name.equals(Note.NAME)){
            return;
        }
        this.content=din.readUTF();
        date=new Date();
        date.setTime(din.readLong());
        din.close();
    }
    public void setFromDate(Date date){
        from=date;
    }
    public Date getFromDate(){
        return from;
    }
    public byte[] toBytes() throws IOException {
        ByteArrayOutputStream bout=new ByteArrayOutputStream();
        DataOutputStream dout=new DataOutputStream(bout);
        dout.writeUTF(Note.NAME);
        dout.writeUTF(content);
        dout.writeLong(date.getTime());
        dout.flush();
        return bout.toByteArray();
    }
    
    public int getID() {
        return id;
    }
    
    public void setID(int id) {
        this.id=id;
    }
    
    public Record getEmptyRecord() {
        return new Note();
    }
    
    public boolean matches(byte[] b) {
        Note demo=new Note();
        try{
            demo.fromBytes(b);
            if(demo.content==null){
                return false;
            }else{
                if(this.date!=null){
                    if(this.from!=null){
                        long demoLong=(demo.getDate().getTime()+Util.OFF_SET)/86400000;
                        long fromLong=(from.getTime()+Util.OFF_SET)/86400000;
                        long toLong=(date.getTime()+Util.OFF_SET)/86400000;
                        if(demoLong>=fromLong&&demoLong<=toLong);
                        else
                            return false;
                    }else{
                        if((this.getDate().getTime()+Util.OFF_SET)/86400000==
                                (demo.getDate().getTime()+Util.OFF_SET)/86400000){
                        } else{
                            return false;
                        }
                        
                    }
                }
                return (this.content!=null?demo.content.indexOf(this.content)!=-1:true);
                
            }
        } catch(Exception exe){
            return false;
        }
    }
    public int compare(byte[] b, byte[] b0) {
        Note n1=new Note();
        Note n2=new Note();
        try{
            n1.fromBytes(b);
            n2.fromBytes(b0);
            if(n1.date.getTime()>n2.date.getTime()){
                return RecordComparator.FOLLOWS;
            }else if(n1.date.getTime()<n2.date.getTime()){
                return RecordComparator.PRECEDES;
            }else
                return RecordComparator.EQUIVALENT;
        } catch(Exception exe){
            return RecordComparator.EQUIVALENT;
        }
    }
    
    public String getContent() {
        return content;
    }
    
    public void setContent(String content) {
        this.content = content;
    }
    
    public Date getDate() {
        return date;
    }
    
    public void setDate(Date date) {
        this.date = date;
    }
    private String getDateString(){
        Calendar cal=Calendar.getInstance();
        cal.setTime(date);
        return ""+cal.get(Calendar.YEAR)+"-"+(cal.get(Calendar.MONTH)+1)+
                "-"+cal.get(Calendar.DATE);
    }
    public String toString(){
        return getDateString()+":"+content;
    }
}