私はJava GUI上に関数を置くのに助けが必要です

Question

私は以前のコースでCを使っていたので、私はJavaプログラミングの新しい学生です。私は最近、NetbeansとEclipseのビルダー設計を使ってGUIを作成する方法を学びましたが、まだボタンとフィールドのそれぞれに関数を配置する方法はまだ分かりません。私はベースコンバータで作業してきました。これは私のUIのコードと関数のための別のコードです。

public class BaseConverter extends javax.swing.JFrame { 

/** 
* Creates new form BaseConverter 
*/ 
public BaseConverter() { 
    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() { 

    jComboBox1 = new javax.swing.JComboBox<>(); 
    jTextField1 = new javax.swing.JTextField(); 
    jButton1 = new javax.swing.JButton(); 
    jScrollPane1 = new javax.swing.JScrollPane(); 
    jTextArea1 = new javax.swing.JTextArea(); 
    jLabel1 = new javax.swing.JLabel(); 

    setDefaultCloseOperation(javax.swing.WindowConstants.EXIT_ON_CLOSE); 
    getContentPane().setLayout(new org.netbeans.lib.awtextra.AbsoluteLayout()); 

    jComboBox1.setFont(new java.awt.Font("Tempus Sans ITC", 1, 14)); // NOI18N 
    jComboBox1.setModel(new javax.swing.DefaultComboBoxModel<>(new String[] { "Decimal", "Binary", "Octal", "Hexadecimal" })); 
    getContentPane().add(jComboBox1, new org.netbeans.lib.awtextra.AbsoluteConstraints(56, 40, 150, 40)); 

    jTextField1.setFont(new java.awt.Font("Tempus Sans ITC", 1, 14)); // NOI18N 
    jTextField1.setText("Enter number"); 
    getContentPane().add(jTextField1, new org.netbeans.lib.awtextra.AbsoluteConstraints(220, 40, 180, 40)); 

    jButton1.setFont(new java.awt.Font("Tempus Sans ITC", 1, 14)); // NOI18N 
    jButton1.setText("Convert"); 
    getContentPane().add(jButton1, new org.netbeans.lib.awtextra.AbsoluteConstraints(410, 40, 90, 40)); 

    jTextArea1.setColumns(20); 
    jTextArea1.setRows(5); 
    jScrollPane1.setViewportView(jTextArea1); 

    getContentPane().add(jScrollPane1, new org.netbeans.lib.awtextra.AbsoluteConstraints(60, 120, 440, 180)); 

    jLabel1.setFont(new java.awt.Font("Tempus Sans ITC", 1, 14)); // NOI18N 
    jLabel1.setText("Result:"); 
    getContentPane().add(jLabel1, new org.netbeans.lib.awtextra.AbsoluteConstraints(260, 100, -1, -1)); 

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

/** 
* @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(BaseConverter.class.getName()).log(java.util.logging.Level.SEVERE, null, ex); 
    } catch (InstantiationException ex) { 
     java.util.logging.Logger.getLogger(BaseConverter.class.getName()).log(java.util.logging.Level.SEVERE, null, ex); 
    } catch (IllegalAccessException ex) { 
     java.util.logging.Logger.getLogger(BaseConverter.class.getName()).log(java.util.logging.Level.SEVERE, null, ex); 
    } catch (javax.swing.UnsupportedLookAndFeelException ex) { 
     java.util.logging.Logger.getLogger(BaseConverter.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 BaseConverter().setVisible(true); 
     } 
    }); 
} 

// Variables declaration - do not modify      
private javax.swing.JButton jButton1; 
private javax.swing.JComboBox<String> jComboBox1; 
private javax.swing.JLabel jLabel1; 
private javax.swing.JScrollPane jScrollPane1; 
private javax.swing.JTextArea jTextArea1; 
private javax.swing.JTextField jTextField1; 
// End of variables declaration     

}

そして、ここでの機能のための私の別々のコードです。

import java.util.Scanner; 

パブリッククラスBaseConverter {

public static void main(String[] args) { 
     //declaring a scanner 
     Scanner input = new Scanner(System.in); 
     String ans = input.nextLine(); 
     System.out.println("Would you like to calculate for Decimal, Binary, Octal and Hexadecimal?"); 

     while ((ans.equals ("Yes"))) 
     { 
      int c; 
      //asks the user what is the value type 
      System.out.println("What is the value type?"); 
      System.out.println("1 - Hexadecimal"); 
      System.out.println("2 - Decimal"); 
      System.out.println("3 - Octal"); 
      System.out.println("4 - Binary"); 
      c = input.nextInt(); 

      switch(c){ 

       //if the user inputs 1 
       case 1: 
       System.out.println("Please enter the Hexadecimal value: "); //prompts the user to enter the hexadecimal value 
       String hexadecimal = input.next(); //scanning the hexadecimal 
       System.out.println("The Hexadecimal number is: " + hexadecimal); //shows the givenn hexadecimal value 
       int decimal = Integer.parseInt(hexadecimal, 16); //converts hexadecimal to decimal 
       System.out.println("Decimal: " + decimal); //shows the converted decimal 
       String binary = Integer.toBinaryString(decimal); //converting the converted decimal to binary 
       System.out.printf("Binary: " + binary); //shows the converted binary 
       String octal = Integer.toOctalString(decimal); //converts the decimal to octal 
       System.out.printf("Octal: " + octal); //shows the converted octal 
       break; //break 

       //if the user inputs 2 
       case 2: 
       System.out.println("Please enter the Decimal Number: "); //prompts the user to enter the decimal number 
       int dec = input.nextInt(); //scanning the decimal 
       System.out.println("The Decimal number is: " + dec); //shows the decimal 
       String bin = Integer.toBinaryString(dec); //converting the decimal to binary 
       System.out.println("Binary: " + bin); //shows the equivalent in binary 
       String oct = Integer.toOctalString(dec); //converting decimal to octal 
       System.out.println("Octal: " + oct); //shows the equivalent octal number 
       String hex = Integer.toHexString(dec); //converting decimal to hexadecimal 
       System.out.println("Hexadecimal: " + hex); //shows the hexadecimal equivalent 
       break; //break 

       //if the user inputs 3 
       case 3: 
       System.out.println("Please enter the Octal Number: "); //prompts the user to input the octal number 
       String octa = input.next(); //scans the octal number 
       int de = Integer.parseInt(octa, 8); //converts octal to decimal 
       System.out.println("Decimal: " + de); //shows the decimal equivalent 
       String bi = Integer.toBinaryString(de); //converts the decimal to binary 
       System.out.println("Binary: " + bi); //shows the binary equivalent 
       String he = Integer.toHexString(de); //converts the decimal to hexadecimal 
       System.out.println("Hexadecimal: " + he); //shows the hexadecimal equivalent 
       break; //break 

       //if the user inputs 4 
       case 4: 
       System.out.println("Please enter the Binary number: "); //prompts the user to enter the binary number 
       String q = input.next(); //scans the binary number 
       int r = Integer.parseInt(q, 2); //converts binary to decimal 
       System.out.println("Decimal: " + r); //shows the decimal equivalent 
       String oc = Integer.toOctalString(r); //converts decimal to octal 
       System.out.println("Octal: " + r); //displays the octal value 
       String l = Integer.toHexString(r); //converts decimal to hex 
       System.out.println("Hexadecimal: " + l); //displays the hex value 
       break; 
      } 
     } 
      while((ans.equals("No"))) 
      { 
       System.out.println("You have successfully exit!"); 
       break; 
      } 
     } 
     } 

は、どのように私が作成したGUIにこれらの機能を置くために私を教えることができる人はいますか？ JButtonの、このようなコードを使用上のアクションを設定する

Answer 1

実は、私はむしろあなたが最初のチュートリアルをよく読んでしまいますチュートリアルクラス。あなたが実装している場合ことをとにかくHow to use ActionListener on a ComboBox

、これはそれがどのようになる..です

class MainPanel extends JPanel //in your case, you extends to JFrame 
{ 
    private JButton btn; 

    public MainPanel(){ 
     //other initializations 
     btn.add(new ActionListener(){ 
      @Override 
      public void actionPerformed(ActionEvent e){ 
       //invoke your conversion method here.. 
       //e.g: 
       //txtResult.setText(convert(txtInput.getText())); 
      } 
     }); 
    } 
} 

注：

JButtonのチュートリアル：How to use buttons

するJComboBoxを使用する方法を学びますGUIでは、入力を受信するためにScanner(System.in)を使用するつもりはありません。ユーザーとのすべての入力&の対話は、テキストボックスやボタンなどのJComponentsに移動します。

Answer 2

：この場所は、あなたに代わるものではありませんよう

JButton button = new JButton("click me"); 
    button.addActionListener(new ActionListener() { 
     @Override 
     public void actionPerformed(ActionEvent e) { 
      System.out.println("clicked"); 
     } 
    }); 

Answer 3

始めるためのヒント。右のような行initComponents();挿入何かの後：

jButton1.addActionListener(new ActionListener() { 
     @Override 
     public void actionPerformed(ActionEvent e) { 
     // Get values from jComboBox1.get???() and jTextField1.get???() 
     // Do your calculations 
     // Show the result with jTextArea1.set???(???) 
     } 
    });