地铁结队开发（一）
作者：互联网
要求开发一个地铁查询系统，可以进行站点查询，并且显示所经历的最短路径和换乘线路
对于我来说，首先要实现的是非web端的java程序，因为web没学好（尴尬/）
先能让它两个站之间进行换乘：
回忆整理了一下之前的东西：
包的名字是：地铁线
Subway.java
1 package 地铁线;
2 import java.io.BufferedReader;
3 import java.io.File;
4 import java.io.FileReader;
5 import java.util.Scanner;
6 import 界面.xianshi1;
7 public class Subway
8 {
9 Scanner scanner=new Scanner(System.in);
10 private int hao,huancheng;
11 private String zhan;
12 public Subway()
13 {
14 this.hao=hao;
15 this.huancheng=huancheng;
16 this.zhan=zhan;
17 }
18 public void xianshi()
19 {
20 File file=new File("d:\\shijiazhuang-subway.txt");
21 BufferedReader reader=null;
22 String temp=null;
23 int line=0;
24 int t=0;
25 try{
26 reader=new BufferedReader(new FileReader(file));
27
28 while((temp=reader.readLine())!=null)
29 {
30 char []ar=temp.toCharArray();
31 line++;
32 System.out.println(line+" "+temp);
33 }
34
35 }
36 catch(Exception e){
37 e.printStackTrace();
38 }
39 finally{
40 if(reader!=null){
41 try{
42 reader.close();
43 }
44 catch(Exception e){
45 e.printStackTrace();
46 }
47 }
48 }
49 }
50 public void goupiao(int x,int y,int z)
51 {
52 File file=new File("d:\\shijiazhuang-subway.txt");
53 BufferedReader reader=null;
54 String temp=null;
55 int line=1;
56 xianshi1 xx=new xianshi1();
57 String []ar=new String [30];
58 int t=0,i,zhan = 0,qian;
59 xx.fanhui();
60 try{
61 reader=new BufferedReader(new FileReader(file));
62 while((temp=reader.readLine())!=null)
63 {
64 ar[t]=temp;
65 t++;
66 }
67 if(x<y)
68 {
69 if(y<=20||x>=21)
70 {
71 zhan=y-x;
72 {
73 for(;line<30;line++)
74 if(line>=x&&line<=y)
75 {
76 System.out.println(line+" "+ar[line-1]);
77 }
78 }
79 }
80 else if(y==21)
81 {
82 zhan=((x-15)>0?(x-15):(15-x))+1;
83 if(x<=15)
84 {
85 for(line=x;line<=15;line++)
86 {
87 System.out.println(line+" "+ar[line-1]);
88 }
89 }
90 else if(x>15)
91 {
92 for(line=x;line>15;line--)
93 {
94 System.out.println(line+" "+ar[line-1]);
95 }
96 }
97 line=22;System.out.println(line+" "+ar[line-1]);
98 line=21;System.out.println(line+" "+ar[line-1]);
99 }
100 else if(x<=20&&y>21)
101 {
102 zhan=((x-15)>0?(x-15):(15-x))+(y-22);
103 if(x<=15)
104 {
105 for(line=x;line<=15;line++)
106 {
107 System.out.println(line+" "+ar[line-1]);
108 }
109 }
110 else if(x>15)
111 {
112 for(line=x;line>15;line--)
113 {
114 System.out.println(line+" "+ar[line-1]);
115 }
116 }
117 for(line=22;line<=y;line++)
118 {
119 System.out.println(line+" "+ar[line-1]);
120 }
121 }
122 }
123 System.out.println("共"+zhan+"站");
124 System.out.println("购票单价：3元");
125 System.out.print("购票金额：");
126 if(zhan%3==0)System.out.println((zhan/3)*z*3+"元");
127 else System.out.println((zhan/3+1)*z*3+"元");
128
129 }
130 catch(Exception e){
131 e.printStackTrace();
132 }
133 finally
134 {
135 if(reader!=null)
136 {
137 try
138 {
139 reader.close();
140 }
141 catch(Exception e)
142 {
143 e.printStackTrace();
144 }
145 }
146 }
147 }
148 };
FirstLineSubway.java
package 地铁线;
import java.io.BufferedReader;
import java.io.File;
import java.io.FileReader;
public class FirstLineSubway extends Subway
{
public void xianshi1()
{
File file=new File("d:\\shijiazhuang-subway.txt");
BufferedReader reader=null;
String temp=null;
int line=1;
int t=0;
try{
reader=new BufferedReader(new FileReader(file));
while((temp=reader.readLine())!=null)
{
if(line<=20)System.out.println(line+" "+temp);
line++;
}
}
catch(Exception e){
e.printStackTrace();
}
finally{
if(reader!=null){
try{
reader.close();
}
catch(Exception e){
e.printStackTrace();
}
}
}
}
}
ThirdLineSubway.java
package 地铁线;
import java.io.BufferedReader;
import java.io.File;
import java.io.FileReader;
public class ThirdLineSubway extends Subway
{
public void xianshi3()
{
File file=new File("d:\\shijiazhuang-subway.txt");
BufferedReader reader=null;
String temp=null;
int line=1;
int t=0;
try{
reader=new BufferedReader(new FileReader(file));
while((temp=reader.readLine())!=null)
{
if(line>=21)System.out.println(line+" "+temp);
line++;
}
}
catch(Exception e){
e.printStackTrace();
}
finally{
if(reader!=null){
try{
reader.close();
}
catch(Exception e){
e.printStackTrace();
}
}
}
}
}
View Code
xianshi1.java
package 地铁线;
import java.io.BufferedReader;
import java.io.File;
import java.io.FileReader;
public class ThirdLineSubway extends Subway
{
public void xianshi3()
{
File file=new File("d:\\shijiazhuang-subway.txt");
BufferedReader reader=null;
String temp=null;
int line=1;
int t=0;
try{
reader=new BufferedReader(new FileReader(file));
while((temp=reader.readLine())!=null)
{
if(line>=21)System.out.println(line+" "+temp);
line++;
}
}
catch(Exception e){
e.printStackTrace();
}
finally{
if(reader!=null){
try{
reader.close();
}
catch(Exception e){
e.printStackTrace();
}
}
}
}
}
View Code
SubwayManage.java
package main;
import java.io.*;
import java.util.Scanner;
import 地铁线.Subway;
import 地铁线.FirstLineSubway;
import 地铁线.ThirdLineSubway;
import 界面.xianshi1;
import java.io.BufferedReader;
import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.FileReader;
import java.io.IOException;
import java.io.InputStreamReader;
import java.io.UnsupportedEncodingException;
public class SubwayManage
{
@SuppressWarnings("null")
public static void main(String[] args)
{
Scanner scanner=new Scanner(System.in);
界面.xianshi1 a=new xianshi1();
地铁线.Subway S=new Subway();
地铁线.FirstLineSubway S1=new FirstLineSubway();
地铁线.ThirdLineSubway S3=new ThirdLineSubway();
a.huanying();
int s=scanner.nextInt();
int qishi;
int zhongdian;
int shuliang;
if(s==1)
{
System.out.println("选择1号线请输入1，选择3号线请输入3，都选请输入0");
s=scanner.nextInt();
if(s==1)
{
S1.xianshi1();
}
if(s==3)
{
S3.xianshi3();
}
if(s==0)
{
S.xianshi();
}
a.goupiao();
System.out.println("请输入起始站的序号：");
qishi=scanner.nextInt();
System.out.println("请输入终点站的序号：");
zhongdian=scanner.nextInt();
System.out.println("请输入购票数量：");
shuliang=scanner.nextInt();
S.goupiao(qishi,zhongdian,shuliang);
}
else if(s==2)
{
a.goupiao();
System.out.println("请输入起始站的序号：");
qishi=scanner.nextInt();
System.out.println("请输入终点站的序号：");
zhongdian=scanner.nextInt();
System.out.println("请输入购票数量：");
shuliang=scanner.nextInt();
S.goupiao(qishi,zhongdian,shuliang);
}
}
}
View Code
截图
标签：java,io,reader,new,地铁,开发,import,结队,line 来源： https://www.cnblogs.com/mitang0-0/p/11061289.html