アクティビティを開始する前にJava jButtonを2回クリックする必要があります

Question

病院用機器のプロジェクト用の注入ポンプを表すNetbeans 7.1でGUIを構築しています。 jButton1を押すと、あるjLabelが表示され、注入が実行中であることが示されます。もう一度jButton1を押すと停止します。私が持っている唯一の問題は、最初に動作する前にボタンを2回クリックする必要があることです。その後、私はそれが動作するように正確に動作します。私はこの問題で複数のスレッドを検索しましたが、他のソリューションは動作していないようです。誰でも助けてくれますか？前もって感謝します！

package infusion; 
    public class Infusion { 
    static Interface screen; 

    public Infusion(){ 

     screen = new Interface(); 
     screen.setVisible(true); 
     screen.jLabel3.setVisible(true); 
     screen.jButton1.setVisible(true); 
    }  

    public static void main(String[] args) { 
     // TODO code application logic here 
     Infusion infusion = new Infusion(); 
    } 
    } 

これは、ほとんどの場合Netbeansによって生成されるユーザーインターフェイスのコードです。 jButton1ActionPerformedの実装は、私が適合させた唯一のコードです。

package infusion; 

    public class Interface extends javax.swing.JFrame { 
     boolean pump1Running = false; 
     /** 
     * Creates new form Interface 
     */ 
     public Interface() { 
      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() { 

      jPanel1 = new javax.swing.JPanel(); 
      jLabel3 = new javax.swing.JLabel(); 
      jSeparator1 = new javax.swing.JSeparator(); 
      jButton1 = new javax.swing.JButton(); 

      setDefaultCloseOperation(javax.swing.WindowConstants.EXIT_ON_CLOSE); 
      setBackground(new java.awt.Color(255, 255, 255)); 
      setPreferredSize(new java.awt.Dimension(800, 562)); 
      setResizable(false); 

      jPanel1.setPreferredSize(new java.awt.Dimension(800, 540)); 

      javax.swing.GroupLayout jPanel1Layout = new javax.swing.GroupLayout(jPanel1); 
      jPanel1.setLayout(jPanel1Layout); 
      jPanel1Layout.setHorizontalGroup(
       jPanel1Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING) 
       .addGap(0, 800, Short.MAX_VALUE) 
      ); 
      jPanel1Layout.setVerticalGroup(
       jPanel1Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING) 
       .addGap(0, 540, Short.MAX_VALUE) 
      ); 

      jLabel3.setIcon(new javax.swing.ImageIcon(getClass().getResource("/Pauze.png"))); // NOI18N 
      jLabel3.setText("Infusion Paused"); 

      jButton1.setText("Start infusion"); 
      jButton1.setCursor(new java.awt.Cursor(java.awt.Cursor.HAND_CURSOR)); 
      jButton1.addActionListener(new java.awt.event.ActionListener() { 
       public void actionPerformed(java.awt.event.ActionEvent evt) { 
        jButton1ActionPerformed(evt); 
       } 
      }); 

      javax.swing.GroupLayout layout = new javax.swing.GroupLayout(getContentPane()); 
      getContentPane().setLayout(layout); 
      layout.setHorizontalGroup(
       layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING) 
       .addGroup(javax.swing.GroupLayout.Alignment.TRAILING, layout.createSequentialGroup() 
        .addContainerGap(36, Short.MAX_VALUE) 
        .addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING) 
         .addGroup(javax.swing.GroupLayout.Alignment.TRAILING, layout.createSequentialGroup() 
          .addComponent(jButton1) 
          .addGap(18, 18, 18) 
          .addComponent(jLabel3, javax.swing.GroupLayout.PREFERRED_SIZE, 189, javax.swing.GroupLayout.PREFERRED_SIZE)) 
         .addComponent(jSeparator1, javax.swing.GroupLayout.Alignment.TRAILING, javax.swing.GroupLayout.PREFERRED_SIZE, 649, javax.swing.GroupLayout.PREFERRED_SIZE)) 
        .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED) 
        .addComponent(jPanel1, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE) 
        .addContainerGap()) 
      ); 
      layout.setVerticalGroup(
       layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING) 
       .addGroup(javax.swing.GroupLayout.Alignment.TRAILING, layout.createSequentialGroup() 
        .addGap(0, 22, Short.MAX_VALUE) 
        .addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING) 
         .addGroup(layout.createSequentialGroup() 
          .addGap(51, 51, 51) 
          .addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.BASELINE) 
           .addComponent(jButton1, javax.swing.GroupLayout.PREFERRED_SIZE, 64, javax.swing.GroupLayout.PREFERRED_SIZE) 
           .addComponent(jLabel3, javax.swing.GroupLayout.PREFERRED_SIZE, 59, javax.swing.GroupLayout.PREFERRED_SIZE)) 
          .addGap(18, 18, 18) 
          .addComponent(jSeparator1, javax.swing.GroupLayout.PREFERRED_SIZE, 10, javax.swing.GroupLayout.PREFERRED_SIZE)) 
         .addComponent(jPanel1, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE))) 
      ); 

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

      //Booleans 



     private void jButton1ActionPerformed(java.awt.event.ActionEvent evt) {           
      if (pump1Running == false){ 
       jLabel3.setIcon(new javax.swing.ImageIcon(getClass().getResource("/Pauze.png"))); 
       jLabel3.setText("Infusion Paused"); 
       jButton1.setText("Start Infusion"); 
       pump1Running = true; 
      } 
      else {//if (pump1Running == true){ 
       jLabel3.setIcon(new javax.swing.ImageIcon(getClass().getResource("/arrows64.gif"))); 
       jLabel3.setText("Running infusion"); 
       jButton1.setText("Stop Infusion"); 
       pump1Running = false; 
      }  
      // 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(Interface.class.getName()).log(java.util.logging.Level.SEVERE, null, ex); 
      } catch (InstantiationException ex) { 
       java.util.logging.Logger.getLogger(Interface.class.getName()).log(java.util.logging.Level.SEVERE, null, ex); 
      } catch (IllegalAccessException ex) { 
       java.util.logging.Logger.getLogger(Interface.class.getName()).log(java.util.logging.Level.SEVERE, null, ex); 
      } catch (javax.swing.UnsupportedLookAndFeelException ex) { 
       java.util.logging.Logger.getLogger(Interface.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 Interface().setVisible(true); 
       } 
      }); 
     } 
     // Variables declaration - do not modify 
     public static javax.swing.JButton jButton1; 
     public javax.swing.JLabel jLabel3; 
     public javax.swing.JPanel jPanel1; 
     private javax.swing.JSeparator jSeparator1; 
     // End of variables declaration 

    } 

Answer 1

問題：あなたはボタンをクリックしたときにpump1Running = falseのは、そう、それは始めることです同じものにラベルと画像を設定します。その後、それを真に切り替えると、別のラベル/イメージに切り替えることができます。

 if (pump1Running){ 
      jLabel3.setIcon(new ImageIcon(getClass().getResource("/Pauze.png"))); 
      jLabel3.setText("Infusion Paused"); 
      jButton1.setText("Start Infusion"); 
      pump1Running = !pump1Running; 
     } 
     else {//if (pump1Running == true){ 
      jLabel3.setIcon(new ImageIcon(getClass().getResource("/Pauze.png"))); 
      jLabel3.setText("Running infusion"); 
      jButton1.setText("Stop Infusion"); 
      pump1Running = !pump1Running; 
     } 

これは、ポンプ1を前後に切り替えて問題を解決します。