次のような情報を含む単一のメモ帳ファイルを調べるプログラムがあります。
Cardiff : 3245658
Bristol : 4726485
Manchester : 4728945
これらの場所と番号は自動システムから出てきており、番号は約 20 秒ごとに変わります。数値が変更されたときにプログラムがメモ帳ファイルを調べて、JTextField の数値を更新するように、ループを作成する必要があります (私は推測しています)。
これが明確でない場合は、質問してください。
PS私はすでにプログラムを作成しているので、ファイルを調べ、必要な情報を取得し、Arraylistを使用して正しい場所に配置します。
私が助けを必要としているのは、ファイルに変更があったときにコードを自動的に更新する方法だけです.Jbuttonsを一切使用せずに、それを単独で実行する必要があります.
現状の私のコード全体
package window;
import java.awt.Color;
import java.awt.EventQueue;
import java.io.BufferedReader;
import java.io.FileNotFoundException;
import java.io.FileReader;
import java.io.IOException;
import java.util.ArrayList;
import java.util.concurrent.Executors;
import java.util.concurrent.ScheduledExecutorService;
import javax.swing.ImageIcon;
import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.JTextField;
import javax.swing.UIManager;
import javax.swing.UnsupportedLookAndFeelException;
public class MapTest {
private JFrame frame;
private JTextField txtCardiff;
private JTextField txtBristol;
private JTextField txtSheffield;
private JTextField txtDerby;
private JTextField txtGlasgow;
private JTextField txtFalkirk;
private JTextField txtNewcastle;
private JTextField txtLeeds;
private JTextField txtPreston;
private JTextField txtManchester;
private JTextField txtWolverhampton;
private JTextField txtBirmingham;
private JTextField txtMiltonKeynes;
private JTextField txtPeterborough;
private JTextField txtColindale;
private JTextField txtStepneyGreen;
private JTextField txtSlough;
private JTextField txtFaraday;
private JTextField txtGuildford;
private JTextField txtSouthbank;
BufferedReader CSVFile = new BufferedReader(new FileReader(Filepath);
ArrayList<String> csv = new ArrayList<String>();
private final ScheduledExecutorService scheduler =
Executors.newScheduledThreadPool(1);
/** * Launch the application. */
public static void main(String[] args) {
try {
UIManager.setLookAndFeel(
UIManager.getSystemLookAndFeelClassName());
} catch (ClassNotFoundException e1) {
e1.printStackTrace();
} catch (InstantiationException e1) {
e1.printStackTrace();
} catch (IllegalAccessException e1) {
e1.printStackTrace();
} catch (UnsupportedLookAndFeelException e1) {
e1.printStackTrace();
}
EventQueue.invokeLater(new Runnable() {
public void run() {
try {
MapTest window = new MapTest();
window.frame.setVisible(true);
} catch (Exception e) {
e.printStackTrace();
}
}
});
}
/**
* Create the application.
*
* @throws IOException
*/
public MapTest() throws IOException {
try {
initialize();
} catch (FileNotFoundException e) {
e.printStackTrace();
}
}
/**
* Initialise the contents of the frame.
*
* @param output
* @throws IOException
*/
private void initialize() throws IOException {
csv.add(CSVFile.readLine());
csv.add(CSVFile.readLine());
csv.add(CSVFile.readLine());
csv.add(CSVFile.readLine());
csv.add(CSVFile.readLine());
csv.add(CSVFile.readLine());
csv.add(CSVFile.readLine());
csv.add(CSVFile.readLine());
csv.add(CSVFile.readLine());
csv.add(CSVFile.readLine());
csv.add(CSVFile.readLine());
csv.add(CSVFile.readLine());
csv.add(CSVFile.readLine());
csv.add(CSVFile.readLine());
csv.add(CSVFile.readLine());
csv.add(CSVFile.readLine());
csv.add(CSVFile.readLine());
csv.add(CSVFile.readLine());
csv.add(CSVFile.readLine());
csv.add(CSVFile.readLine());
System.out.println(csv.get(0));
System.out.println(csv.get(1));
System.out.println(csv.get(2));
System.out.println(csv.get(3));
System.out.println(csv.get(4));
System.out.println(csv.get(5));
System.out.println(csv.get(6));
System.out.println(csv.get(7));
System.out.println(csv.get(8));
System.out.println(csv.get(9));
System.out.println(csv.get(10));
System.out.println(csv.get(11));
System.out.println(csv.get(12));
System.out.println(csv.get(13));
System.out.println(csv.get(14));
System.out.println(csv.get(15));
System.out.println(csv.get(16));
System.out.println(csv.get(17));
System.out.println(csv.get(18));
System.out.println(csv.get(19));
// above system.out's are to check to see if it was reading the right line
frame = new JFrame();
frame.setBounds(0, 0, 1000, 1086);
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
frame.getContentPane().setLayout(null);
frame.setBackground(Color.CYAN);
txtCardiff = new JTextField();
txtCardiff.setText(csv.get(0));
txtCardiff.setBackground(Color.GREEN);
txtCardiff.setBounds(305, 699, 102, 20);
frame.getContentPane().add(txtCardiff);
txtCardiff.setColumns(10);
txtBristol = new JTextField();
txtBristol.setText(csv.get(1));
txtBristol.setBackground(Color.GREEN);
txtBristol.setBounds(416, 780, 102, 20);
frame.getContentPane().add(txtBristol);
txtBristol.setColumns(10);
txtSheffield = new JTextField();
txtSheffield.setText(csv.get(2));
txtSheffield.setBackground(Color.GREEN);
txtSheffield.setBounds(517, 356, 110, 20);
frame.getContentPane().add(txtSheffield);
txtSheffield.setColumns(10);
txtDerby = new JTextField();
txtDerby.setText(csv.get(3));
txtDerby.setBackground(Color.GREEN);
txtDerby.setBounds(582, 451, 90, 20);
frame.getContentPane().add(txtDerby);
txtDerby.setColumns(10);
txtGlasgow = new JTextField();// makes the textfield
txtGlasgow.setText(csv.get(4));
txtGlasgow.setBackground(Color.GREEN);
txtGlasgow.setBounds(250, 94, 102, 20);
frame.getContentPane().add(txtGlasgow);
txtGlasgow.setColumns(10);
txtFalkirk = new JTextField();
txtFalkirk.setText(csv.get(5));
txtFalkirk.setColumns(10);
txtFalkirk.setBackground(Color.GREEN);
txtFalkirk.setBounds(331, 41, 102, 20);
frame.getContentPane().add(txtFalkirk);
txtNewcastle = new JTextField();
txtNewcastle.setText(csv.get(6));
txtNewcastle.setColumns(10);
txtNewcastle.setBackground(Color.GREEN);
txtNewcastle.setBounds(424, 141, 111, 20);
frame.getContentPane().add(txtNewcastle);
txtLeeds = new JTextField();
txtLeeds.setText(csv.get(7));
txtLeeds.setColumns(10);
txtLeeds.setBackground(Color.GREEN);
txtLeeds.setBounds(481, 244, 102, 20);
frame.getContentPane().add(txtLeeds);
txtPreston = new JTextField();
txtPreston.setText(csv.get(8));
txtPreston.setColumns(10);
txtPreston.setBackground(Color.GREEN);
txtPreston.setBounds(356, 221, 102, 20);
frame.getContentPane().add(txtPreston);
txtManchester = new JTextField();
txtManchester.setText(csv.get(9));
txtManchester.setColumns(10);
txtManchester.setBackground(Color.GREEN);
txtManchester.setBounds(394, 394, 124, 20);
frame.getContentPane().add(txtManchester);
txtWolverhampton = new JTextField();
txtWolverhampton.setText(csv.get(10));
txtWolverhampton.setColumns(10);
txtWolverhampton.setBackground(Color.GREEN);
txtWolverhampton.setBounds(360, 486, 153, 20);
frame.getContentPane().add(txtWolverhampton);
txtBirmingham = new JTextField();
txtBirmingham.setText(csv.get(11));
txtBirmingham.setColumns(10);
txtBirmingham.setBackground(Color.GREEN);
txtBirmingham.setBounds(424, 553, 128, 20);
frame.getContentPane().add(txtBirmingham);
txtMiltonKeynes = new JTextField();
txtMiltonKeynes.setText(csv.get(12));
txtMiltonKeynes.setColumns(10);
txtMiltonKeynes.setBackground(Color.GREEN);
txtMiltonKeynes.setBounds(474, 604, 135, 20);
frame.getContentPane().add(txtMiltonKeynes);
txtPeterborough = new JTextField();
txtPeterborough.setText(csv.get(13));
txtPeterborough.setColumns(10);
txtPeterborough.setBackground(Color.GREEN);
txtPeterborough.setBounds(655, 576, 135, 20);
frame.getContentPane().add(txtPeterborough);
txtColindale = new JTextField();
txtColindale.setText(csv.get(14));
txtColindale.setColumns(10);
txtColindale.setBackground(Color.GREEN);
txtColindale.setBounds(541, 699, 107, 20);
frame.getContentPane().add(txtColindale);
txtStepneyGreen = new JTextField();
txtStepneyGreen.setText(csv.get(15));
txtStepneyGreen.setColumns(10);
txtStepneyGreen.setBackground(Color.GREEN);
txtStepneyGreen.setBounds(667, 699, 137, 20);
frame.getContentPane().add(txtStepneyGreen);
txtSlough = new JTextField();
txtSlough.setText(csv.get(16));
txtSlough.setColumns(10);
txtSlough.setBackground(Color.GREEN);
txtSlough.setBounds(525, 756, 102, 20);
frame.getContentPane().add(txtSlough);
txtFaraday = new JTextField();
txtFaraday.setText(csv.get(17));
txtFaraday.setColumns(10);
txtFaraday.setBackground(Color.GREEN);
txtFaraday.setBounds(650, 756, 102, 20);
frame.getContentPane().add(txtFaraday);
txtGuildford = new JTextField();
txtGuildford.setText(csv.get(18));
txtGuildford.setColumns(10);
txtGuildford.setBackground(Color.GREEN);
txtGuildford.setBounds(525, 822, 102, 20);
frame.getContentPane().add(txtGuildford);
txtSouthbank = new JTextField();
txtSouthbank.setText(csv.get(19));
txtSouthbank.setColumns(10);
txtSouthbank.setBackground(Color.GREEN);
txtSouthbank.setBounds(655, 807, 115, 20);
frame.getContentPane().add(txtSouthbank);
JLabel lblNewLabel = new JLabel("New label");
lblNewLabel.setForeground(Color.BLACK);
lblNewLabel.setBackground(Color.BLACK);
lblNewLabel
.setIcon(new ImageIcon(
"FilePath
lblNewLabel.setBounds(33, 11, 890, 1086);
frame.getContentPane().add(lblNewLabel);
}
}