多个 JSpinner 以不同方式初始化

Posted 2023-04-13

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【中文标题】多个 JSpinner 以不同方式初始化【英文标题】：Multiple JSpinners Initialized differently 【发布时间】：2014-09-01 12:11:54 【问题描述】：

我的应用程序中有 2 个 JSpinner，我为它们设置了模型、编辑器和数字格式。但是，当我运行应用程序时，第二个不显示小数部分最初。这看起来像聚焦问题。

所以第一个初始化为 0.0 但第二个初始化为 0；我想要第二个和第一个一样。我想念这里的步骤吗？下面是我的代码。

这是我的代码

import java.text.DecimalFormat;
import javax.swing.JSpinner;
import javax.swing.SpinnerNumberModel;

public class NewJFrame extends javax.swing.JFrame 
    private final JSpinner.NumberEditor editor;
    DecimalFormat format , format2 ; 
    private final JSpinner.NumberEditor editor1;

    /**
     * Creates new form NewJFrame
     */
    public NewJFrame() 
        initComponents();

        SpinnerNumberModel model1 = new SpinnerNumberModel(0.0,-1000.0 ,1000.0,0.1); 
        this.jSpinner1.setModel(model1);
        editor = new JSpinner.NumberEditor(this.jSpinner1);
        this.jSpinner1.setEditor(editor);
        format = editor.getFormat(); 
        format.setMinimumFractionDigits(1);

        SpinnerNumberModel model2 = new SpinnerNumberModel(0.0,-1000.0 ,1000.0,0.1); 
        this.jSpinner2.setModel(model2);
        editor1 = new JSpinner.NumberEditor(this.jSpinner2);
        this.jSpinner2.setEditor(editor1);
        format2 = editor1.getFormat(); 
        format2.setMinimumFractionDigits(1);


    

    /**
     * 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() 

        jSpinner1 = new javax.swing.JSpinner();
        jSpinner2 = new javax.swing.JSpinner();

        setDefaultCloseOperation(javax.swing.WindowConstants.EXIT_ON_CLOSE);
        addMouseMotionListener(new java.awt.event.MouseMotionAdapter() 
            public void mouseMoved(java.awt.event.MouseEvent evt) 
                formMouseMoved(evt);
            
        );

        jSpinner1.setFocusable(false);
        jSpinner1.setOpaque(false);
        jSpinner1.setRequestFocusEnabled(false);

        jSpinner2.setFocusable(false);
        jSpinner2.setOpaque(false);
        jSpinner2.setRequestFocusEnabled(false);

        javax.swing.GroupLayout layout = new javax.swing.GroupLayout(getContentPane());
        getContentPane().setLayout(layout);
        layout.setHorizontalGroup(
            layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
            .addGroup(layout.createSequentialGroup()
                .addGap(24, 24, 24)
                .addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.TRAILING)
                    .addComponent(jSpinner2, javax.swing.GroupLayout.PREFERRED_SIZE, 245, javax.swing.GroupLayout.PREFERRED_SIZE)
                    .addComponent(jSpinner1, javax.swing.GroupLayout.PREFERRED_SIZE, 245, javax.swing.GroupLayout.PREFERRED_SIZE))
                .addContainerGap(41, Short.MAX_VALUE))
        );
        layout.setVerticalGroup(
            layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
            .addGroup(layout.createSequentialGroup()
                .addGap(25, 25, 25)
                .addComponent(jSpinner1, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE)
                .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.UNRELATED)
                .addComponent(jSpinner2, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE)
                .addContainerGap(31, Short.MAX_VALUE))
        );

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

    private void formMouseMoved(java.awt.event.MouseEvent evt)                                 
        // TODO add your handling code here:
                                   

    /**
     * @param args the command line arguments
     */
    public static void main(String args[]) 
        /* Set the Nimbus look and feel */
        //<editor-fold defaultstate="collapsed" desc=" Look and feel setting code (optional) ">
        /* If Nimbus (introduced in Java SE 6) is not available, stay with the default look and feel.
         * For details see http://download.oracle.com/javase/tutorial/uiswing/lookandfeel/plaf.html 
         */
        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 ex) 
            java.util.logging.Logger.getLogger(NewJFrame.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
         catch (InstantiationException ex) 
            java.util.logging.Logger.getLogger(NewJFrame.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
         catch (IllegalAccessException ex) 
            java.util.logging.Logger.getLogger(NewJFrame.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
         catch (javax.swing.UnsupportedLookAndFeelException ex) 
            java.util.logging.Logger.getLogger(NewJFrame.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 NewJFrame().setVisible(true);
            
        );
    

    // Variables declaration - do not modify                     
    private javax.swing.JSpinner jSpinner1;
    private javax.swing.JSpinner jSpinner2;
    // End of variables declaration

【问题讨论】：

请提供完整的可运行示例。说不定你自己去做了，你就会找到答案。看到我认为第一个是重点，这就是为什么，如何设置重点初始或其他解决方案，我已经更新了我的代码 【参考方案1】：

您可以直接将格式设置为编辑器的文本字段

import java.text.DecimalFormat;
import java.text.NumberFormat;
import javax.swing.*;
import javax.swing.text.InternationalFormatter;

public class NewJFrame extends javax.swing.JFrame 
//    private final JSpinner.NumberEditor editor;
    DecimalFormat format , format2 ;
//    private final JSpinner.NumberEditor editor1;

    /**
     * Creates new form NewJFrame
     */
    public NewJFrame() 
        initComponents();

        SpinnerNumberModel model1 = new SpinnerNumberModel(0.0,-1000.0 ,1000.0,0.1);
        this.jSpinner1.setModel(model1);

        SpinnerNumberModel model2 = new SpinnerNumberModel(0.0,-1000.0 ,1000.0,0.1);
        this.jSpinner2.setModel(model2);

        (((JSpinner.NumberEditor)this.jSpinner1.getEditor()).getTextField()).setFormatterFactory(new JFormattedTextField.AbstractFormatterFactory() 
            @Override
            public JFormattedTextField.AbstractFormatter getFormatter(JFormattedTextField tf) 
                NumberFormat format = DecimalFormat.getInstance();
                format.setMinimumFractionDigits(1);
                InternationalFormatter formatter = new InternationalFormatter(format);
                formatter.setAllowsInvalid(false);
                formatter.setMinimum(-1000.0);
                formatter.setMaximum(1000.00);
                return formatter;
            
        );
        (((JSpinner.NumberEditor)this.jSpinner2.getEditor()).getTextField()).setFormatterFactory(new JFormattedTextField.AbstractFormatterFactory() 
            @Override
            public JFormattedTextField.AbstractFormatter getFormatter(JFormattedTextField tf) 
                NumberFormat format = DecimalFormat.getInstance();
                format.setMinimumFractionDigits(1);
                InternationalFormatter formatter = new InternationalFormatter(format);
                formatter.setAllowsInvalid(false);
                formatter.setMinimum(-1000.0);
                formatter.setMaximum(1000.00);
                return formatter;
            
        );
    

    /**
     * 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() 

        jSpinner1 = new javax.swing.JSpinner();
        jSpinner2 = new javax.swing.JSpinner();

        setDefaultCloseOperation(javax.swing.WindowConstants.EXIT_ON_CLOSE);
        addMouseMotionListener(new java.awt.event.MouseMotionAdapter() 
            public void mouseMoved(java.awt.event.MouseEvent evt) 
                formMouseMoved(evt);
            
        );

        jSpinner1.setFocusable(false);
        jSpinner1.setOpaque(false);
        jSpinner1.setRequestFocusEnabled(false);

        jSpinner2.setFocusable(false);
        jSpinner2.setOpaque(false);
        jSpinner2.setRequestFocusEnabled(false);

        javax.swing.GroupLayout layout = new javax.swing.GroupLayout(getContentPane());
        getContentPane().setLayout(layout);
        layout.setHorizontalGroup(
                layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
                        .addGroup(layout.createSequentialGroup()
                                .addGap(24, 24, 24)
                                .addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.TRAILING)
                                        .addComponent(jSpinner2, javax.swing.GroupLayout.PREFERRED_SIZE, 245, javax.swing.GroupLayout.PREFERRED_SIZE)
                                        .addComponent(jSpinner1, javax.swing.GroupLayout.PREFERRED_SIZE, 245, javax.swing.GroupLayout.PREFERRED_SIZE))
                                .addContainerGap(41, Short.MAX_VALUE))
        );
        layout.setVerticalGroup(
                layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
                        .addGroup(layout.createSequentialGroup()
                                .addGap(25, 25, 25)
                                .addComponent(jSpinner1, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE)
                                .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.UNRELATED)
                                .addComponent(jSpinner2, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE)
                                .addContainerGap(31, Short.MAX_VALUE))
        );

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

    private void formMouseMoved(java.awt.event.MouseEvent evt) 
        // TODO add your handling code here:
    

    /**
     * @param args the command line arguments
     */
    public static void main(String args[]) 
        /* Set the Nimbus look and feel */
        //<editor-fold defaultstate="collapsed" desc=" Look and feel setting code (optional) ">
        /* If Nimbus (introduced in Java SE 6) is not available, stay with the default look and feel.
         * For details see http://download.oracle.com/javase/tutorial/uiswing/lookandfeel/plaf.html 
         */
        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 ex) 
            java.util.logging.Logger.getLogger(NewJFrame.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
         catch (InstantiationException ex) 
            java.util.logging.Logger.getLogger(NewJFrame.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
         catch (IllegalAccessException ex) 
            java.util.logging.Logger.getLogger(NewJFrame.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
         catch (javax.swing.UnsupportedLookAndFeelException ex) 
            java.util.logging.Logger.getLogger(NewJFrame.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 NewJFrame().setVisible(true);
            
        );
    

    // Variables declaration - do not modify                     
    private javax.swing.JSpinner jSpinner1;
    private javax.swing.JSpinner jSpinner2;
    // End of variables declaration

【讨论】：

感谢您的回答，现在工作正常，我也想知道这个问题，因为我认为焦点问题是，如何消除对这些微调器的关注并设置这样的值，您对此有答案吗还有吗？看起来您更改了格式，但该格式在一段时间后使用。焦点是一种“强制”刷新和重新绘制内容的方式。【参考方案2】：

另一种选择是使用JSpinner.NumberEditor(JSpinner spinner, String decimalFormatPattern)：

editor = new JSpinner.NumberEditor(this.jSpinner1, "0.0");

【讨论】：

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