Shulou(Shulou.com)06/02 Report--

This article mainly introduces how to use java to achieve a simple housing management program, has a certain reference value, interested friends can refer to, I hope you can learn a lot after reading this article, the following let Xiaobian take you to understand.

/ *

Application form for household housing

, /

Public class ApplicationInfo {

Private String name = null

Private String age = null

Private String length_service = null

Private String head_name = null

Private String post = null

Private String population = null

Private String grade = null

Private String apply_type = null

Public ApplicationInfo () {

}

/ *

Use an array to save the user's application information.

, /

Public void setAllAttribute (String result []) {

Name = result [0]

Age = result [1]

Length_service = result [2]

Head_name = result [3]

Post = result [4]

Population = result [5]

Grade = result [6]

Apply_type = result [7]

}

/ *

Get all kinds of application information from users

Including name, age, length of service, position, professional title, family population, etc.

information.

, /

Public String getApplyType () {

Return apply_type

}

Public String getName () {

Return name

}

Public String getAge () {

Return age

}

Public String getLengthService () {

Return length_service

}

Public String getPost () {

Return post

}

Public String getHeadName () {

Return head_name

}

Public String getPopulation () {

Return population

}

Public String getGrade () {

Return grade

}

}

/ / /

/ *

Used to show vacant rooms

Housing

Statistics on the total number of houses.

It's rough.

, /

Import java.awt.*

Import java.awt.event.*

Import java.awt.geom.*

Import javax.swing.*

Public class BarChartInfo extends JPanel {

Private static final int SCALE = 2

Private static final int CHARTCOUNT = 3

Private static final int BARSPACING = 20

Private static final String CHARTTITEL = "HouseNumberGraphics"

Private static final Font CURRENTFONT= new Font ("Courier", Font.BOLD,12)

Private static FontMetrics cfm

Private static int MAXLABELWIDTH = 0

Private static int BARWIDTH = 0

Private static int MAX = 0

Private int values []

Private Color colors []

Private String labels []

Public BarChartInfo (int valueInfo []) {

Cfm = getFontMetrics (CURRENTFONT)

Values = new int [CHARTCOUNT]

Colors = new Color [CHARTCOUNT]

Labels = new String [CHARTCOUNT]

Colors [0] = Color.red

Colors [1] = Color.green

Colors [2] = Color.blue

For (int iTuno witi MAX) {

MAX = values [I]

}

Labels [0] = "RemainHouseNumber:"

Labels [1] = "DistributeHouseNumber:"

Labels [2] = "AllHouseNumber:"

MAXLABELWIDTH = Math.max (cfm.stringWidth (labels [I])

MAXLABELWIDTH)

}

BARWIDTH = CURRENTFONT.getSize ()

SetSize (Math.max (MAX*SCALE)

Cfm.stringWidth (CHARTTITEL)) + MAXLABELWIDTH+5

(CHARTCOUNT* (BARWIDTH+BARSPACING)) + CURRENTFONT.getSize () + 10)

}

Public void update (Graphics g) {

G.clearRect (0re0jue getWidth (), getHeight ())

PaintComponent (g)

}

Public void paintComponent (Graphics g) {

Super.paintComponent (g)

Graphics2D G2D = (Graphics2D) g

G2D.setFont (CURRENTFONT)

G2D.setColor (Color.black)

Int i,cx,cy

I = cfm.stringWidth (CHARTTITEL)

For (I = 0 * * I < CHARTCOUNT; iTunes +) {

Cy = (BARWIDTH + BARSPACING) * I) + BARSPACING

Cx = MAXLABELWIDTH + 1

Cx + = Math.max ((getWidth ()-(MAXLABELWIDTH + 1 + (MAX*SCALE) / 2jing0)

G2D.setColor (Color.black)

G2D.drawString (labels [I], cx-MAXLABELWIDTH-1

Cy + cfm.getAscent ()

G2D.fillRect (cx+3,cy+5, (values [I] * SCALE), BARWIDTH)

G2D.setColor (colors [I])

G2D.fillRect (cx,cy, (values [I] * SCALE), BARWIDTH)

G2D.drawString ("" + values [I], cx+ (values [I] * SCALE) + 3

Cy + cfm.getAscent ()

}

}

}

/ / /

/ *

Write the user's application information into the room distribution file.

A month later, the information is read out by the system, and then the rooms are divided.

, /

Import java.io.*

Public class CreateApplyQueueFile extends Thread {

Private boolean isOver

Private StringBuffer buffer

Public CreateApplyQueueFile (StringBuffer buffer) {

IsOver = false

This.buffer = buffer

}

Public void run () {

Try {

PrintWriter out= new PrintWriter (

New BufferedWriter (

New FileWriter ("house.tmp", true)), true)

Out.println (buffer)

Out.close ()

}

Catch (Exception e) {e.printStackTrace ();}

IsOver = true

}

Public boolean isOver () {

Return isOver

}

}

/ /

/ *

To split the room.

, /

Import java.io.*

Import java.sql.*

Import java.util.*

Import javax.swing.*

Public class DistributeHouse extends Thread {

Private Vector houseInfoVector

Private Vector applyVector

Private Connection connection

Private StringBuffer resultBuffer

Private JTextArea textArea

Public DistributeHouse (Connection connection,JTextArea textArea) {

ResultBuffer = new StringBuffer ()

HouseInfoVector = new Vector ()

ApplyVector = new Vector ()

This.connection = connection

This.textArea = textArea

}

Public void run () {

LoadApplyQueueFile ()

DistributeHouse ()

}

/ *

Read out the applicant's information from the room allocation file and add it to the vector for use in the room allocation.

, /

Private synchronized void LoadApplyQueueFile () {

Try {BufferedReader reader = new BufferedReader (

New FileReader ("house.tmp"))

String s = null

While ((s = reader.readLine ())! = null) {

ApplicationInfo applyInfo = new ApplicationInfo ()

StringTokenizer stk = new StringTokenizer (s)

String result [] = new String [8]

Int iTunes 0

While (stk.hasMoreElements ()) {

Result [I] = stk.nextToken ("*")

ITunes +

}

ApplyInfo.setAllAttribute (result)

ApplyVector.addElement (applyInfo)

}

Reader.close ()

}

Catch (Exception e) {e.printStackTrace ();}

}

/ *

After the allocation of rooms, update the allocation documents to be empty files.

Prepare the next batch of rooms for use.

, /

Private synchronized void DeleteApplyQueueFile () {

Try {

FileOutputStream fos = new FileOutputStream ("house.tmp")

Fos.close ()

}

Catch (Exception e) {e.printStackTrace ();}

}

/ *

Randomly read out the applicant grade from the vector, connect to the database, and make related queries and updates.

, /

Private synchronized void distributeHouse () {

VacantHouseInfo info = null

While (! applyVector.isEmpty ()) {

ApplicationInfo applyInfo = (ApplicationInfo) applyVector.elementAt (0)

String grade = getGrade (applyInfo)

Int accordHouseNum = getVacantHouseInfo (grade)

Int randomIndex = (int) (accordHouseNum*Math.random ())

Info = (VacantHouseInfo) houseInfoVector.elementAt (randomIndex)

UpdateRentFile (info,applyInfo)

UpdateLodgingHouseFile (info,applyInfo)

UpdateVacantHouseFile (info)

DisplayResult (info,applyInfo)

ApplyVector.remove (0)

HouseInfoVector.removeAllElements ()

}

DeleteApplyQueueFile ()

}

/ *

Get a vacancy rating. Vacancy grade assumption and applicant's age, length of service, position, etc.

It's about. The functional relationship is not given here, it can be set to 3, 5, etc.

, /

Private synchronized int getVacantHouseInfo (String houseGrade) {

Int value =-1

Try {

PreparedStatement Stmt = connection.prepareStatement (

"select * FROM vacancy file WHERE House rating = +

HouseGrade + ")

ResultSet result = Stmt.executeQuery ()

ResultSetMetaData metadata = result.getMetaData ()

String houseInfo [] = new String [5]

While (result.next ()) {

For (int iTunes 1)

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