Shulou(Shulou.com)06/03 Report--

This article mainly introduces java how to achieve flight information query management system, has a certain reference value, interested friends can refer to, I hope you can learn a lot after reading this article, the following let the editor take you to understand it.

Air Infomation System console-based flight information system, referred to as AIS

The specific requirements are as follows:

(1) display the main menu of the flight information system, as shown in the figure, including:

1) list all flights

2) query by departure time

3) query by destination

4), delete the flight

5), update flights

6), exit the system

AirInfo.java

Public class AirInfo {/ * flight number (id) flight number (flight_number) destination (destination) departure date (flight_date) * / private int id; private String flight_number; private String destination; private String flight_date; public AirInfo (int id, String flight_number, String destination, String flight_date) {this.id=id; this.flight_number=flight_number; this.destination=destination; this.flight_date=flight_date;} public int getId () {return id } public void setId (int id) {this.id = id;} public String getFlight_number () {return flight_number;} public void setFlight_number (String flight_number) {this.flight_number = flight_number;} public String getDestination () {return destination;} public void setDestination (String destination) {this.destination = destination;} public String getFlight_date () {return flight_date;} public void setFlight_date (String flight_date) {this.flight_date = flight_date;}

AirInfoManager.java

Import java.util.*;public class AirInfoManager {/ / method for listing all flights public void all_flight (ArrayList flight) {System.out.println ("number\ t flight number\ t destination\ t\ t departure date"); for (AirInfo e:flight) System.out.println (e.getId () + "\ t" + e.getFlight_number () + "\ t" + e.getDestination () + "+ e.getFlight_date () } / / query method by departure time public void inquiry_date (ArrayList flight) {System.out.print ("Please enter date:); Scanner in=new Scanner (System.in); String date=in.next (); for (AirInfo e:flight) {if (e.getFlight_date (). Equals (date)) {System.out.println (" No.\ t flight number\ t destination\ t departure date ") System.out.println (e.getId () + "\ t" + e.getFlight_number () + "\ t" + e.getDestination () + "+ e.getFlight_date ());} / / query method by destination public void inquiry_destination (ArrayList flight) {System.out.print (" Please enter destination: "); Scanner in=new Scanner (System.in); String destination=in.next () For (AirInfo e:flight) {if (e.getDestination (). Equals (destination)) {System.out.println ("number\ t flight number\ t destination\ t\ t departure date"); System.out.println (e.getId () + "\ t" + e.getFlight_number () + "\ t" + e.getDestination () + "+ e.getFlight_date () } / / method 1: delete the record by remove (index). Here, it is important to call the Iterator method to * avoid ConcurrentModificationException exceptions * public void delete_flight (ArrayList flight) {System.out.print ("Please enter the flight number to be deleted:"); Scanner in=new Scanner (System.in); int id=in.nextInt (); Iterator iterator = flight.iterator () While (iterator.hasNext ()) {AirInfo e = iterator.next (); if (e.getId () = = id) {iterator.remove (); System.out.println ("deleted successfully!") ; method 2: wrap the records to be deleted with an ArrayList () class, and * delete them with removeAll (Collection c) method * / public void delete_flight (ArrayList flight) {System.out.print ("Please enter the flight number to be deleted:"); Scanner in=new Scanner (System.in); List delList = new ArrayList (); int id=in.nextInt () For (AirInfo e:flight) {if (e.getId () = = (id)) delList.add (e);} flight.removeAll (delList); System.out.println ("deleted successfully!") Public void update_flight (ArrayList flight) {Scanner in=new Scanner (System.in); int id; String flight_number,destinaton,flight_date; System.out.print ("Please enter the flight code to be updated:"); id=in.nextInt (); System.out.print ("Please enter the new flight number:"); flight_number=in.next (); System.out.print ("Please enter the new destination:"); destinaton=in.next () System.out.print ("Please enter a new departure time:"); flight_date=in.next (); flight.add (new AirInfo (id,flight_number,destinaton,flight_date)); System.out.println ("updated successfully!") ;} / / method to exit the system public void exit () {System.out.println ("exit the system successfully!") ; System.exit (0);}}

TestAirInfo.java

Import java.util.ArrayList;import java.util.Scanner;// startup and operation system public class TestAirInfo {public static void main (String [] args) {AirInfoManager airInfoManager=new AirInfoManager (); / Arraylist represents flight information ArrayList flight=new ArrayList (); / / add records flight.add (new AirInfo (1,001 "," beijing "," 2016-1-1 ") to the array; flight.add (new AirInfo (2," 002 "," shanghai "," 2016-2-20 ")) Flight.add (new AirInfo (3, "003", "guangzhou", "2016-2-24"); Scanner in=new Scanner (System.in); while (true) {System.out.print ("Please select an action (1. List all flights, 2. Query by departure time, 3. Query by destination, 4. Delete flight, 5. Update flight, 6. Switch (in.nextInt ()) {case 1: airInfoManager.all_flight (flight); break; case 2: airInfoManager.inquiry_date (flight); break; case 3: airInfoManager.inquiry_destination (flight); break; case 4: airInfoManager.delete_flight (flight); break; case 5: airInfoManager.update_flight (flight); break; case 6: airInfoManager.exit (); default:System.out.println ("Sorry, the number you entered is invalid. Please enter the number between 1 and 6: ");} System.out.println ();} thank you for reading this article carefully. I hope the article" how to implement the flight information query and management system in java "shared by the editor will be helpful to you. At the same time, I also hope that you will support and pay attention to the industry information channel. More related knowledge is waiting for you to learn!

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