报告模板-ktv.doc

滨州学院计算机科学技术系Java语言程序设计课后作业题目 姓名 学号 专业 班级 年 月 日 成绩 教师签名 问 题 描 述 及 分 析(根据设计题目的要求，充分地分析和理解问题，明确问题要求做什么)1 模拟ktv点歌系统做基于java控制台的程序。2 将歌曲的名字，歌手名字，歌曲内容保存。3 能够从文件中读取大量歌曲的信息，并保存。4 对歌曲能够按歌名排名，也能按歌手名字保存。5 能通过歌名查找相关信息，也能按歌手查找相关信息。6 能添加歌曲。设计思路描述N打印列表模糊查找返回到主面板Y播放精确查找根据歌手查找歌曲根据歌名查找歌曲点歌面板4.退出3.删除歌曲2.添加歌曲1.点歌主控制面板调试过程中遇到的问题及解决办法(调试过程中遇到的主要问题及解决方法，得到的结论)问题1：歌名和歌手字符串不能比较。解决办法：转换成char类型数组，逐个比较，并比较ACSII的值。class MusicNameComparator implements ComparatorOverridepublic int compare(Music arg0, Music arg1) / TODO Auto-generated method stubchar name1=arg0.GetMusName().toCharArray();char name2=arg1.GetMusName().toCharArray();int i=0;while(name1i=name2i&iname1.length&iname2.length)i+;return name1i-name2i;结论：字符串转换成char类型数组，逐个比较，并比较ACSII的值。问题2：文件读取时，信息分类解决办法：public void AddByFile (List allMusic)String musname,lyric,singer;tryBufferedReader br = new BufferedReader(new InputStreamReader(new FileInputStream(123.txt);String data = null;data=br.readLine();while(data!=null)Music music=new Music();for(int j=0;j3;j+)if(j%3=0)musname=data;music.SetMusName(musname);else if(j%3=1)singer=data;music.SetSinger(singer);else if(j%3=2)lyric=data;music.SetLyric(lyric);allMusic.add(music);data=br.readLine();Collections.sort(allMusic, new MusicNameComparator();catch(IOException ioe)ioe.toString();结论：用BufferedReader.readline();从文件里一行一行读取。总 结（对结果进行分析，设计心得，重点突出特色及改进设想）1.加深对java集合框架的理解。2.加深对 comparator接口的练习，对Collections.sort(List list,Comparator);的使用3.对String.indexof();的使用。可以返回字符串是否存在相应的字串。4.加深了对面向对象思想的理解。和接触面向接口的思想。附 录（参考资料等）import java.util.Comparator;public class Music private String Number;private String MusName;private String Singer;private String Lyric;public Music()this.MusName=Null;this.Singer=Null;this.Lyric=Null;public Music(String musName,String singer,String lyric)this.MusName=musName;this.Singer=singer;this.Lyric=lyric;public void SetMusName(String name)this.MusName=name;public void SetSinger(String singer)this.Singer=singer;public void SetLyric(String lyric)this.Lyric=lyric;public String GetMusName()return this.MusName;public String GetSinger()return this.Singer;public String GetLyric()return this.Lyric;public String toString()return n歌名：+this.MusName+n歌手：+this.Singer+n歌词：+this.Lyric;public void play()System.out.println(正在播放。n+this.Lyric);class HappyMusic extends Musicpublic HappyMusic(String musName, String singer, String lyric) super(musName, singer, lyric);/ TODO Auto-generated constructor stubclass MusicNameComparator implements ComparatorOverridepublic int compare(Music arg0, Music arg1) / TODO Auto-generated method stubchar name1=arg0.GetMusName().toCharArray();char name2=arg1.GetMusName().toCharArray();int i=0;while(name1i=name2i&iname1.length&iname2.length)i+;return name1i-name2i;class MusicSingerComparator implements ComparatorOverridepublic int compare(Music o1, Music o2) / TODO Auto-generated method stubchar singer1=o1.GetSinger().toCharArray();char singer2=o2.GetSinger().toCharArray();int i=0;while(singer1i=singer2i&isinger1.length&isinger2.length)i+;return singer1i-singer2i;import java.io.BufferedReader;import java.io.FileInputStream;import java.io.IOException;import java.io.InputStreamReader;import java.util.ArrayList;import java.util.Arrays;import java.util.Collections;import java.util.List;import java.util.Scanner;public class MusicManner private String PlayLsit;private List allMusic;public List GetallMusic()return this.allMusic;public MusicManner(String name)this.PlayLsit=name;allMusic=new ArrayList();AddByFile(allMusic);public void AddByFile (List allMusic)String musname,lyric,singer;tryBufferedReader br = new BufferedReader(new InputStreamReader(new FileInputStream(123.txt);String data = null;data=br.readLine();while(data!=null)Music music=new Music();for(int j=0;j3;j+)if(j%3=0)musname=data;music.SetMusName(musname);else if(j%3=1)singer=data;music.SetSinger(singer);else if(j%3=2)lyric=data;music.SetLyric(lyric);allMusic.add(music);data=br.readLine();Collections.sort(allMusic, new MusicNameComparator();catch(IOException ioe)ioe.toString();public void AddByUser()Music music=new Music();Scanner input=new Scanner(System.in);System.out.println(输入歌名：);music.SetMusName(input.next();System.out.println(输入歌手：);music.SetSinger(input.next();System.out.println(输入歌词：);music.SetLyric(input.next();this.allMusic.add(music);public void SortMusicByName()Collections.sort(this.allMusic, new MusicNameComparator();public void SortMusicBySinger()Collections.sort(this.allMusic, new MusicSingerComparator(); public Music GetMusicByName(String name) Music music=null; for(Music tempmusic:this.allMusic) if(tempmusic.GetMusName().equals(name) music=tempmusic; break; return music; public Music GetMusicBySinger(String singer)Music music=null;for(Music tempmusic:this.allMusic)if(tempmusic.GetSinger().equals(singer)music=tempmusic;break;return music;public void DeleByUser(String name)Music music;if(music=GetMusicByName(name)!=null)allMusic.remove(music);System.out.println(删除成功！);else System.out.println(歌曲不存在！); public List IndexMusicOfName(String keyword) List list=new ArrayList(); for(Music tempmusic:this.allMusic) if(tempmusic.GetMusName().indexOf(keyword)!=-1) list.add(tempmusic); printmusiclistbyname(list); return list; public void printmusiclistbyname(List list) for(Music music:list) System.out.println(music.GetMusName()+n); public List IndexMusicOfSinger(String keyword) List list=new ArrayList(); for(Music tempmusic:this.allMusic) if(tempmusic.GetSinger().indexOf(keyword)!=-1) list.add(tempmusic); printmusiclistbysinger(list); return list; public void printmusiclistbysinger(List list) for(Music music:list) System.out.println(music.GetSinger()+n); import java.util.Scanner;public class MusicTest public static void main(String args) / TODO Auto-generated method stubMusicManner ktv=new MusicManner(大家乐);Scanner input=new Scanner(System.in);int command;while( command=read1(input)!=4)switch(command)case 1:Music music;while(command=read2(input)!=3)switch(command)case 1:ktv.printmusiclistbyname(ktv.GetallMusic();System.out.println(请输入歌名：);String name=input.next();if(music=ktv.GetMusicByName(name)!=null)System.out.println(music.toString();music.play();elseSystem.out.println(很抱歉，没有找到相应的歌。正在查找相似的歌名.);ktv.IndexMusicOfName(name);System.out.println(希望有您要找的结果.);continue;continue;case 2:ktv.printmusiclistbysinger(ktv.GetallMusic();System.out.println(请输入歌手：);String singer=input.next();if(music=ktv.GetMusicBySinger(singer)!=null)System.out.println(music.toString();music.play();elseSystem.out.println(很抱歉，没有找到相应的歌。正在查找相似的歌手.);ktv.IndexMusicOfSinger(singer);System.out.println(希望有您要找的结果.);continue;continue;case 2:ktv.AddByUser();System.out.println(step2);continue;case 3:System.out.println(step3);System.out.println(请输入要删除歌曲的名字：);String name=input.next();ktv.DeleByUser(name);continue;case 4:System.out.println(quit);return;default:System.out.println(default);System.out.println(欢迎下次光临。);public static int read1(Scanner input)System.out.println(欢迎来到：大家乐点歌系统！请选择：1.点歌 2.添加歌曲 3.删去歌曲 4.退出);return input.nextInt();public static int read2(Scanner input)System.out.println(请选择：1.歌名 2.歌手 3.返回);return input.nextInt();11