0

入力したデータをテキストフィールドに保存するプログラムを作成しました。節約テクニックはこんな感じです

data0 = student number
data1 = name
data2 = section
data3 = cp
data4 = email
data5 = address

次に、このようにすべてのエントリを1行のテキストに保存します

data0 | data1 | data2 | data3 | data4 | data5

しかし、私が直面している問題は、文字列をロードして別のデータをスライスし、それらが指定されている別のテキストフィールドに印刷する方法です。

ところで、これは私のコードです

import java.awt.HeadlessException;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.io.File;
import java.io.FileWriter;
import java.io.IOException;
import javax.swing.JOptionPane;

/*
 * To change this template, choose Tools | Templates
 * and open the template in the editor.
 */

/**
 *
 * @author Jfetizanan
 */
public class DATAPROCCESS extends javax.swing.JFrame {
    private static final long serialVersionUID = 1L;

    /**
     * Creates new form processPOINT
     */
    public DATAPROCCESS() {
        initComponents();
    }

    /**
     * This method is called from within the constructor to initialize the form.
     * WARNING: Do NOT modify this code. The content of this method is always
     * regenerated by the Form Editor.
     */
    @SuppressWarnings("unchecked")
    // <editor-fold defaultstate="collapsed" desc="Generated Code">
    private void initComponents() {

        jLabel7 = new javax.swing.JLabel();
        Label1 = new javax.swing.JLabel();
        jLabel1 = new javax.swing.JLabel();
        StudentNO = new javax.swing.JTextField();
        jLabel2 = new javax.swing.JLabel();
        name = new javax.swing.JTextField();
        jLabel3 = new javax.swing.JLabel();
        section = new javax.swing.JTextField();
        jLabel4 = new javax.swing.JLabel();
        jLabel5 = new javax.swing.JLabel();
        cp = new javax.swing.JTextField();
        jLabel6 = new javax.swing.JLabel();
        email = new javax.swing.JTextField();
        jLabel8 = new javax.swing.JLabel();
        jTextField1 = new javax.swing.JTextField();
        save = new javax.swing.JButton();
        reset = new javax.swing.JButton();

        jLabel7.setText("jLabel7");

        setDefaultCloseOperation(javax.swing.WindowConstants.EXIT_ON_CLOSE);
        setAlwaysOnTop(true);
        setBackground(new java.awt.Color(51, 102, 255));
        setCursor(new java.awt.Cursor(java.awt.Cursor.DEFAULT_CURSOR));
        setResizable(false);

        Label1.setHorizontalAlignment(javax.swing.SwingConstants.CENTER);
        Label1.setText("STUDENT INFO STORAGE v1");

        jLabel1.setText("Student No:");

        jLabel2.setText("Name:");

        jLabel3.setText("Section:");

        jLabel5.setText("Cellphone #:");

        jLabel6.setText("E-Mail:");

        jLabel8.setText("Address:");

        save.setText("Save");
        save.addActionListener(new ActionListener() {
                            @Override
                            public void actionPerformed(ActionEvent e) {
                                 File file = new File("data.dat");

                            try {
                                 try (FileWriter writer = new FileWriter(file, true)) {
                                 String data0 = StudentNO.getText();
                                 String data1 = name.getText();
                                 String data2 = section.getText();
                                 String data3 = cp.getText();
                                 String data4 = email.getText();
                                 String data5 = jTextField1.getText();

                                 writer.write(data0+" | "+data1+" | "+data2+" | "+data3+" | "+data4+" | "+data5+"/n");
                                }

                                System.out.println("Data Saved");
                                } catch (IOException | HeadlessException z) {
                                JOptionPane.showMessageDialog(null, e);
                                }
                                } 
                                });
        reset.setText("Reset");

        javax.swing.GroupLayout layout = new javax.swing.GroupLayout(getContentPane());
        getContentPane().setLayout(layout);
        layout.setHorizontalGroup(
            layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
            .addGroup(layout.createSequentialGroup()
                .addContainerGap()
                .addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
                    .addComponent(Label1, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE)
                    .addGroup(layout.createSequentialGroup()
                        .addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
                            .addGroup(layout.createSequentialGroup()
                                .addGap(10, 10, 10)
                                .addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
                                    .addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING, false)
                                        .addComponent(jLabel1, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE)
                                        .addComponent(jLabel2, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE))
                                    .addGroup(layout.createSequentialGroup()
                                        .addGap(1, 1, 1)
                                        .addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.TRAILING)
                                            .addComponent(jLabel4)
                                            .addComponent(jLabel3))))
                                .addGap(15, 15, 15))
                            .addGroup(javax.swing.GroupLayout.Alignment.TRAILING, layout.createSequentialGroup()
                                .addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
                                    .addComponent(jLabel6)
                                    .addComponent(jLabel5)
                                    .addComponent(jLabel8))
                                .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.UNRELATED)))
                        .addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING, false)
                            .addGroup(javax.swing.GroupLayout.Alignment.TRAILING, layout.createSequentialGroup()
                                .addComponent(save, javax.swing.GroupLayout.DEFAULT_SIZE, 136, Short.MAX_VALUE)
                                .addGap(18, 18, 18)
                                .addComponent(reset, javax.swing.GroupLayout.PREFERRED_SIZE, 138, javax.swing.GroupLayout.PREFERRED_SIZE))
                            .addComponent(StudentNO)
                            .addComponent(name)
                            .addComponent(section)
                            .addComponent(cp)
                            .addComponent(email)
                            .addComponent(jTextField1))
                        .addGap(0, 13, Short.MAX_VALUE)))
                .addContainerGap())
        );
        layout.setVerticalGroup(
            layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
            .addGroup(layout.createSequentialGroup()
                .addContainerGap()
                .addComponent(Label1, javax.swing.GroupLayout.PREFERRED_SIZE, 28, javax.swing.GroupLayout.PREFERRED_SIZE)
                .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
                .addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.BASELINE)
                    .addComponent(jLabel1)
                    .addComponent(StudentNO, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE))
                .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.UNRELATED)
                .addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.BASELINE)
                    .addComponent(jLabel2)
                    .addComponent(name, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE))
                .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.UNRELATED)
                .addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.BASELINE)
                    .addComponent(jLabel3)
                    .addComponent(section, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE))
                .addGap(11, 11, 11)
                .addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
                    .addGroup(layout.createSequentialGroup()
                        .addGap(20, 20, 20)
                        .addComponent(jLabel4))
                    .addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.BASELINE)
                        .addComponent(cp, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE)
                        .addComponent(jLabel5)))
                .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.UNRELATED)
                .addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.BASELINE)
                    .addComponent(email, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE)
                    .addComponent(jLabel6))
                .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.UNRELATED)
                .addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.BASELINE)
                    .addComponent(jTextField1, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE)
                    .addComponent(jLabel8))
                .addGap(18, 18, 18)
                .addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.BASELINE)
                    .addComponent(save)
                    .addComponent(reset))
                .addContainerGap(27, Short.MAX_VALUE))
        );

        pack();
    }// </editor-fold>

    /**
     * @param args the command line arguments
     */
    public static void main(String args[]) {

        try {
            for (javax.swing.UIManager.LookAndFeelInfo info : javax.swing.UIManager.getInstalledLookAndFeels()) {
                if ("Nimbus".equals(info.getName())) {
                    javax.swing.UIManager.setLookAndFeel(info.getClassName());
                    break;
                }
            }
        } catch (ClassNotFoundException | InstantiationException | IllegalAccessException | javax.swing.UnsupportedLookAndFeelException ex) {
            java.util.logging.Logger.getLogger(DATAPROCCESS.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
        }
        //</editor-fold>

        /*
         * Create and display the form
         */
        java.awt.EventQueue.invokeLater(new Runnable() {

            public void run() {
                new DATAPROCCESS().setVisible(true);
            }
        });
    }
    // Variables declaration - do not modify
    private javax.swing.JLabel Label1;
    private javax.swing.JTextField StudentNO;
    private javax.swing.JTextField cp;
    private javax.swing.JTextField email;
    private javax.swing.JLabel jLabel1;
    private javax.swing.JLabel jLabel2;
    private javax.swing.JLabel jLabel3;
    private javax.swing.JLabel jLabel4;
    private javax.swing.JLabel jLabel5;
    private javax.swing.JLabel jLabel6;
    private javax.swing.JLabel jLabel7;
    private javax.swing.JLabel jLabel8;
    private javax.swing.JTextField jTextField1;
    private javax.swing.JTextField name;
    private javax.swing.JButton reset;
    private javax.swing.JButton save;
    private javax.swing.JTextField section;
    // End of variables declaration
}
4

2 に答える 2

1

このコードを使用します：

BufferedReader reader = new BufferedReader( new InputStreamReader( new FileInputStream( "filename" ), "UTF-8" ) ) );
String line = reader.readLine();
reader.close();
String[] parts = line.split( "\\|", -1 );

注：FileWriter「デフォルトのエンコーディング」を使用しているため、使用しないでください。常に使用する

BufferedWriter writer = new BufferedWriter( new OutputStreamWriter( new FileOutputStream( "filename" ), "UTF-8" ) ) );
于 2012-08-14T07:36:15.120 に答える
1

データファイルからデータを解析してそれぞれのフィールドにロードしようとしている場合は、これらのことを行うことができます。
1.ファイルの内容を読み取ります。ここで例を得ることができます 2.以下のコードを使用してコンテンツを分割します。

String delimiter = "|";
temp = str.split(delimiter);
for(int i =0; i < temp.length ; i++) {
     System.out.println(temp[i]); //you will get data here
}

3.次に、それぞれのテキストフィールドを取得し、それぞれのデータをロードします

  1. ここで、最初のフィールドを使用して実際にデータを検索しようとしています。あなたは以下のようにこれを行うことができます。
try{
      FileInputStream fstream = new FileInputStream("data.dat");
      DataInputStream in = new DataInputStream(fstream);
      BufferedReader br = new BufferedReader(new InputStreamReader(in));
      String strLine;
      while ((strLine = br.readLine()) != null)   {
       if (strLine.startsWith("Give your data0 here")){

                        String delimiter = "|";
                        temp = str.split(delimiter);
                        for(int i =0; i < temp.length ; i++) {
                          System.out.println(temp[i]); //you will get data here
                        }
       }
      }
      in.close();
      }catch (Exception e){
          System.err.println("Error: " + e.getMessage());
      }
于 2012-08-14T07:40:52.207 に答える