Question

我是一名初学程序员，使用JTabbedPane创建应用程序，默认情况下只有一个选项卡。如果用户点击了＆＃34;添加标签＆＃34;按钮，给出一个新选项卡。新选项卡有一些jtextfields和comboboxes。我想从新标签的组件（jtextfields，combobes）中获取文本，但我不知道如何访问它。（这样我就可以使用＆＃34; .getText（）＆＃34;函数）

另外，你们可以给我一个提示：将所有标签中的文字保存到格式化的＆＃34; .txt＆＃34;是最快/最好的方法。没有硬编码的文件？

提前致谢，如果您需要更多信息，我会发布：）

添加新标签的代码（单击按钮后，新的JPanel表单添加了一些jtextfields）：

private void dodajOsebo_buttonActionPerformed(java.awt.event.ActionEvent evt) { 

    int tabNum = OsebniPodatki_TabbedPane.getTabCount() + 1;

    OsebniPodatki_TabbedPane.addTab("Oseba " + tabNum, new PodatkiOStranki());

    PodatkiOPotovanju_TabbedPane.addTab("Oseba " + tabNum, new PodrobnostiPotovanja());

}

其中一个自定义JPanel表单的代码：

package FRI;


public class PodatkiOStranki extends javax.swing.JPanel {
metode m = new metode();

public PodatkiOStranki() {
    initComponents();
}


private void initComponents() {

    spol_buttonGroup = new javax.swing.ButtonGroup();
    podatki_LABEL = new javax.swing.JLabel();
    Ime_op = new javax.swing.JLabel();
    Priimek_op = new javax.swing.JLabel();
    Spol = new javax.swing.JLabel();
    PotniList_op = new javax.swing.JLabel();
    Naslov_op = new javax.swing.JLabel();
    kraj_op = new javax.swing.JLabel();
    elPosta_op = new javax.swing.JLabel();
    ime_field = new javax.swing.JTextField();
    priimek_field = new javax.swing.JTextField();
    spol_m = new javax.swing.JRadioButton();
    spol_z = new javax.swing.JRadioButton();
    potniList_field = new javax.swing.JTextField();
    naslov_field = new javax.swing.JTextField();
    kraj_field = new javax.swing.JTextField();
    elPosta_field = new javax.swing.JTextField();
    ponastaviVnos_button = new javax.swing.JButton();

    setMaximumSize(new java.awt.Dimension(400, 600));
    setMinimumSize(new java.awt.Dimension(375, 562));
    setPreferredSize(new java.awt.Dimension(375, 562));

    podatki_LABEL.setFont(new java.awt.Font("Lucida Grande", 1, 24)); // NOI18N
    podatki_LABEL.setText("Podatki o stranki");

    Ime_op.setText("Ime:");

    Priimek_op.setText("Priimek:");

    Spol.setText("Spol:");

    PotniList_op.setText("Št. potnega lista:");

    Naslov_op.setText("Naslov:");

    kraj_op.setText("Kraj & poštna št:");

    elPosta_op.setText("E-pošta:");

    ime_field.addKeyListener(new java.awt.event.KeyAdapter() {
        public void keyTyped(java.awt.event.KeyEvent evt) {
            ime_fieldKeyTyped(evt);
        }
    });

    priimek_field.addKeyListener(new java.awt.event.KeyAdapter() {
        public void keyTyped(java.awt.event.KeyEvent evt) {
            priimek_fieldKeyTyped(evt);
        }
    });

    spol_buttonGroup.add(spol_m);
    spol_m.setText("Moški");

    spol_buttonGroup.add(spol_z);
    spol_z.setText("Ženska");

    kraj_field.addKeyListener(new java.awt.event.KeyAdapter() {
        public void keyTyped(java.awt.event.KeyEvent evt) {
            kraj_fieldKeyTyped(evt);
        }
    });

    ponastaviVnos_button.setFont(new java.awt.Font("Lucida Grande", 1, 14)); // NOI18N
    ponastaviVnos_button.setText("Ponastavi vnos");
    ponastaviVnos_button.addActionListener(new java.awt.event.ActionListener() {
        public void actionPerformed(java.awt.event.ActionEvent evt) {
            ponastaviVnos_buttonActionPerformed(evt);
        }
    });

    javax.swing.GroupLayout layout = new javax.swing.GroupLayout(this);
    this.setLayout(layout);
    layout.setHorizontalGroup(
        layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
        .addGroup(layout.createSequentialGroup()
            .addContainerGap()
            .addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
                .addGroup(layout.createSequentialGroup()
                    .addComponent(podatki_LABEL)
                    .addGap(0, 0, Short.MAX_VALUE))
                .addGroup(javax.swing.GroupLayout.Alignment.TRAILING, layout.createSequentialGroup()
                    .addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
                        .addComponent(Priimek_op)
                        .addComponent(PotniList_op)
                        .addComponent(Naslov_op)
                        .addComponent(Ime_op)
                        .addComponent(elPosta_op)
                        .addComponent(kraj_op)
                        .addComponent(Spol))
                    .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED, javax.swing.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE)
                    .addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING, false)
                        .addComponent(priimek_field)
                        .addComponent(naslov_field)
                        .addComponent(potniList_field)
                        .addComponent(kraj_field)
                        .addGroup(layout.createSequentialGroup()
                            .addComponent(spol_m)
                            .addGap(18, 18, 18)
                            .addComponent(spol_z))
                        .addComponent(ime_field, javax.swing.GroupLayout.Alignment.TRAILING, javax.swing.GroupLayout.DEFAULT_SIZE, 251, Short.MAX_VALUE)
                        .addComponent(elPosta_field, javax.swing.GroupLayout.Alignment.TRAILING))))
            .addContainerGap(javax.swing.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE))
        .addGroup(layout.createSequentialGroup()
            .addGap(107, 107, 107)
            .addComponent(ponastaviVnos_button, javax.swing.GroupLayout.PREFERRED_SIZE, 161, javax.swing.GroupLayout.PREFERRED_SIZE)
            .addContainerGap(javax.swing.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE))
    );
    layout.setVerticalGroup(
        layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
        .addGroup(layout.createSequentialGroup()
            .addContainerGap()
            .addComponent(podatki_LABEL)
            .addGap(18, 18, 18)
            .addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.BASELINE)
                .addComponent(Ime_op)
                .addComponent(ime_field, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE))
            .addGap(0, 0, 0)
            .addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.BASELINE)
                .addComponent(Priimek_op)
                .addComponent(priimek_field, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE))
            .addGap(0, 0, 0)
            .addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.BASELINE)
                .addComponent(Spol)
                .addComponent(spol_m)
                .addComponent(spol_z))
            .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
            .addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.BASELINE)
                .addComponent(potniList_field, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE)
                .addComponent(PotniList_op))
            .addGap(0, 0, 0)
            .addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.BASELINE)
                .addComponent(naslov_field, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE)
                .addComponent(Naslov_op))
            .addGap(0, 0, 0)
            .addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.BASELINE)
                .addComponent(kraj_field, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE)
                .addComponent(kraj_op))
            .addGap(0, 0, 0)
            .addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.BASELINE)
                .addComponent(elPosta_field, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE)
                .addComponent(elPosta_op))
            .addGap(75, 75, 75)
            .addComponent(ponastaviVnos_button, javax.swing.GroupLayout.PREFERRED_SIZE, 53, javax.swing.GroupLayout.PREFERRED_SIZE)
            .addContainerGap(183, Short.MAX_VALUE))
    );
}// </editor-fold>                        

private void ime_fieldKeyTyped(java.awt.event.KeyEvent evt) {                                   
    m.preveriVnos(ime_field, evt);
}                                  

private void priimek_fieldKeyTyped(java.awt.event.KeyEvent evt) {                                       
    m.preveriVnos(priimek_field, evt);
}                                      

private void kraj_fieldKeyTyped(java.awt.event.KeyEvent evt) {                                    
    m.preveriVnos(kraj_field, evt);
}                                   

private void ponastaviVnos_buttonActionPerformed(java.awt.event.ActionEvent evt) {                                                     
    m.ponastaviVnosPodatkiOStranki(ime_field, priimek_field, potniList_field, naslov_field, elPosta_field, kraj_field, spol_buttonGroup);
}                                                    


// Variables declaration - do not modify                     
private javax.swing.JLabel Ime_op;
private javax.swing.JLabel Naslov_op;
private javax.swing.JLabel PotniList_op;
private javax.swing.JLabel Priimek_op;
private javax.swing.JLabel Spol;
private javax.swing.JTextField elPosta_field;
private javax.swing.JLabel elPosta_op;
private javax.swing.JTextField ime_field;
private javax.swing.JTextField kraj_field;
private javax.swing.JLabel kraj_op;
private javax.swing.JTextField naslov_field;
private javax.swing.JLabel podatki_LABEL;
private javax.swing.JButton ponastaviVnos_button;
private javax.swing.JTextField potniList_field;
private javax.swing.JTextField priimek_field;
private javax.swing.ButtonGroup spol_buttonGroup;
private javax.swing.JRadioButton spol_m;
private javax.swing.JRadioButton spol_z;
// End of variables declaration

}

Answer 1

这很大程度上取决于您如何声明和使用变量。

添加标签后，您是否有参考标记？
当文本字段/组合框添加到选项卡时，您是否保留其引用？您可以使用jtextfield引用列表来获取其文本。

对于第二部分，如果您有对该选项卡的引用，则可以遍历其子组件（已经很长，但我认为该方法可能是getComponents（））并检查每个是否为JTextField类型。

根据您的自定义jpanels：

您可能会在那里定义一个方法：

public void getContent（）{ String text = naslov_field.getText（）; text + = kraj_field.getText（）; }

而不是

private void dodajOsebo_buttonActionPerformed（java.awt.event.ActionEvent evt）{

int tabNum = OsebniPodatki_TabbedPane.getTabCount() + 1;

OsebniPodatki_TabbedPane.addTab("Oseba " + tabNum, new PodatkiOStranki());

PodatkiOPotovanju_TabbedPane.addTab("Oseba " + tabNum, new PodrobnostiPotovanja());

}

将jpanels声明为变量。

//variable decl
     PodrobnostiPotovanja currentAddePodronPanel;
     PodatkiOStranki currentAddedPodatPanel;

     private void dodajOsebo_buttonActionPerformed(java.awt.event.ActionEvent evt) { 

        int tabNum = OsebniPodatki_TabbedPane.getTabCount() + 1;
        currentAddedPodatPanel = new PodatkiOStranki();
        currentAddePodronPanel = new PodrobnostiPotovanja();
        OsebniPodatki_TabbedPane.addTab("Oseba " + tabNum, currentAddedPodatPanel);

        PodatkiOPotovanju_TabbedPane.addTab("Oseba " + tabNum, currentAddePodronPanel);
      }

假设您有一个从jpanel获取文本的按钮：

public void saveText(ActionEvent event){
  String content = currentAddedPodatPanel.getContent();
  //etc
}

关于格式化的注意事项：从jtextfield开始，你必须自己做。否则看看jtextarea与文档（有点乏味）或JTextPane或JEditorPane The really big index

Netbeans / java：从JabxtField-s中检索JTabbedPane内的文本

1 个答案: