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我正在尝试在 GUI 中制作图表，但我真的不明白它是如何工作的。我可以使用 netbeans 拖放来制作事物的视觉方面，但是当涉及到编码时，我不明白。

在我制作了事物的视觉方面之后，我如何将动作/事件等事物放在一起。这是我的设计代码。

package my.mathamaticsui;

public class MathamaticsUI extends javax.swing.JFrame {

    /**
     * Creates new form MathamaticsUI
     */
    public MathamaticsUI() {
        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();
        jScrollPane5 = new javax.swing.JScrollPane();
        jList1 = new javax.swing.JList();
        jTabbedPane1 = new javax.swing.JTabbedPane();
        jScrollPane2 = new javax.swing.JScrollPane();
        jTextArea2 = new javax.swing.JTextArea();
        jScrollPane1 = new javax.swing.JScrollPane();
        jTextArea1 = new javax.swing.JTextArea();
        jScrollPane3 = new javax.swing.JScrollPane();
        jTextArea3 = new javax.swing.JTextArea();
        jScrollPane4 = new javax.swing.JScrollPane();
        jTextArea4 = new javax.swing.JTextArea();
        jPanel2 = new javax.swing.JPanel();
        jLabel1 = new javax.swing.JLabel();
        jTabbedPane2 = new javax.swing.JTabbedPane();
        jLabel2 = new javax.swing.JLabel();

        javax.swing.GroupLayout jPanel1Layout = new javax.swing.GroupLayout(jPanel1);
        jPanel1.setLayout(jPanel1Layout);
        jPanel1Layout.setHorizontalGroup(
            jPanel1Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
            .addGap(0, 100, Short.MAX_VALUE)
        );
        jPanel1Layout.setVerticalGroup(
            jPanel1Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
            .addGap(0, 100, Short.MAX_VALUE)
        );

        jList1.setModel(new javax.swing.AbstractListModel() {
            String[] strings = { "Item 1", "Item 2", "Item 3", "Item 4", "Item 5" };
            public int getSize() { return strings.length; }
            public Object getElementAt(int i) { return strings[i]; }
        });
        jScrollPane5.setViewportView(jList1);

        setDefaultCloseOperation(javax.swing.WindowConstants.EXIT_ON_CLOSE);

        jTabbedPane1.setBackground(new java.awt.Color(204, 204, 204));

        jTextArea2.setBackground(new java.awt.Color(204, 204, 204));
        jTextArea2.setColumns(20);
        jTextArea2.setEditable(false);
        jTextArea2.setFont(new java.awt.Font("Times New Roman", 3, 18)); // NOI18N
        jTextArea2.setRows(5);
        jTextArea2.setText("Polynominal Functions:\nf(x)= ax^3 + bx^2 + c\n\n");
        jScrollPane2.setViewportView(jTextArea2);

        jTabbedPane1.addTab("Polynominal", jScrollPane2);

        jTextArea1.setBackground(new java.awt.Color(204, 204, 204));
        jTextArea1.setColumns(20);
        jTextArea1.setFont(new java.awt.Font("Times New Roman", 3, 18)); // NOI18N
        jTextArea1.setRows(5);
        jTextArea1.setText("Exponential Functions:\nf(x) = Ae^x\nf(x) = Ab^x");
        jScrollPane1.setViewportView(jTextArea1);

        jTabbedPane1.addTab("Exponential", jScrollPane1);

        jTextArea3.setBackground(new java.awt.Color(204, 204, 204));
        jTextArea3.setColumns(20);
        jTextArea3.setFont(new java.awt.Font("Times New Roman", 3, 18)); // NOI18N
        jTextArea3.setRows(5);
        jTextArea3.setText("Trigonometric Functions:\nf(x) = AsinBx + c");
        jScrollPane3.setViewportView(jTextArea3);

        jTabbedPane1.addTab("Trigonometric", jScrollPane3);

        jTextArea4.setBackground(new java.awt.Color(204, 204, 204));
        jTextArea4.setColumns(20);
        jTextArea4.setFont(new java.awt.Font("Times New Roman", 3, 18)); // NOI18N
        jTextArea4.setRows(5);
        jTextArea4.setText("Parametric Functions:\nf(t) = (AcosBt, AsinDt)\n");
        jTextArea4.setBorder(javax.swing.BorderFactory.createBevelBorder(javax.swing.border.BevelBorder.RAISED));
        jScrollPane4.setViewportView(jTextArea4);

        jTabbedPane1.addTab("Parametric", jScrollPane4);

        jPanel2.addAncestorListener(new javax.swing.event.AncestorListener() {
            public void ancestorMoved(javax.swing.event.AncestorEvent evt) {
            }
            public void ancestorAdded(javax.swing.event.AncestorEvent evt) {
                jPanel2AncestorAdded(evt);
            }
            public void ancestorRemoved(javax.swing.event.AncestorEvent evt) {
            }
        });

        jLabel1.setFont(new java.awt.Font("Times New Roman", 1, 18)); // NOI18N
        jLabel1.setText("Graph");

        javax.swing.GroupLayout jPanel2Layout = new javax.swing.GroupLayout(jPanel2);
        jPanel2.setLayout(jPanel2Layout);
        jPanel2Layout.setHorizontalGroup(
            jPanel2Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
            .addGroup(jPanel2Layout.createSequentialGroup()
                .addComponent(jLabel1)
                .addGap(0, 0, Short.MAX_VALUE))
            .addComponent(jTabbedPane2)
        );
        jPanel2Layout.setVerticalGroup(
            jPanel2Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
            .addGroup(jPanel2Layout.createSequentialGroup()
                .addComponent(jLabel1)
                .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
                .addComponent(jTabbedPane2, javax.swing.GroupLayout.PREFERRED_SIZE, 178, javax.swing.GroupLayout.PREFERRED_SIZE)
                .addGap(0, 0, Short.MAX_VALUE))
        );

        jLabel2.setFont(new java.awt.Font("Times New Roman", 1, 18)); // NOI18N
        jLabel2.setText("Data");

        javax.swing.GroupLayout layout = new javax.swing.GroupLayout(getContentPane());
        getContentPane().setLayout(layout);
        layout.setHorizontalGroup(
            layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
            .addComponent(jTabbedPane1)
            .addComponent(jPanel2, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE)
            .addGroup(layout.createSequentialGroup()
                .addComponent(jLabel2)
                .addGap(0, 0, Short.MAX_VALUE))
        );
        layout.setVerticalGroup(
            layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
            .addGroup(layout.createSequentialGroup()
                .addGap(9, 9, 9)
                .addComponent(jLabel2)
                .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
                .addComponent(jTabbedPane1, javax.swing.GroupLayout.PREFERRED_SIZE, 155, javax.swing.GroupLayout.PREFERRED_SIZE)
                .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.UNRELATED)
                .addComponent(jPanel2, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE)
                .addGap(0, 0, Short.MAX_VALUE))
        );

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

    private void jPanel2AncestorAdded(javax.swing.event.AncestorEvent 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(MathamaticsUI.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
        } catch (InstantiationException ex) {
            java.util.logging.Logger.getLogger(MathamaticsUI.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
        } catch (IllegalAccessException ex) {
            java.util.logging.Logger.getLogger(MathamaticsUI.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
        } catch (javax.swing.UnsupportedLookAndFeelException ex) {
            java.util.logging.Logger.getLogger(MathamaticsUI.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 MathamaticsUI().setVisible(true);
            }
        });
    }
    // Variables declaration - do not modify
    private javax.swing.JLabel jLabel1;
    private javax.swing.JLabel jLabel2;
    private javax.swing.JList jList1;
    private javax.swing.JPanel jPanel1;
    private javax.swing.JPanel jPanel2;
    private javax.swing.JScrollPane jScrollPane1;
    private javax.swing.JScrollPane jScrollPane2;
    private javax.swing.JScrollPane jScrollPane3;
    private javax.swing.JScrollPane jScrollPane4;
    private javax.swing.JScrollPane jScrollPane5;
    private javax.swing.JTabbedPane jTabbedPane1;
    private javax.swing.JTabbedPane jTabbedPane2;
    private javax.swing.JTextArea jTextArea1;
    private javax.swing.JTextArea jTextArea2;
    private javax.swing.JTextArea jTextArea3;
    private javax.swing.JTextArea jTextArea4;
    // End of variables declaration
}
4

3 回答 3

4

我建议从 Swing 教程开始：

http://docs.oracle.com/javase/tutorial/uiswing/TOC.html

注意：在 NetBeans 中，注册事件监听器

  • 点击组件
  • 在属性面板中：转到事件选项卡并注册一个名称
  • 转到代码视图并添加您的侦听器代码
于 2012-04-15T16:48:08.140 回答
3

如果你想添加一个新类，你必须在 nebeans 中去 file-> new -> class 并定义一个名为：“Dog”的新类。然后在 main 函数中实例化 Dog 类，如下所示：

public static void main(String args[]) { 
    Dog dog = new Dog();
}

一旦你实例化了你的类，你就可以向 Dog 添加方法，并在那里调用它们。您不是“向 GUI 添加类”，而是向您的 java 项目添加类。您无法使用拖放可视化编辑器功能创建和连接新类。此链接解释了如何向您的 java 项目添加一个类并将其连接起来：

http://docs.oracle.com/javase/tutorial/getStarted/cupojava/netbeans.html

于 2012-04-15T16:58:31.690 回答
0

我建议，您从 java 概念的开头开始，了解代码的实际含义。在抽象和多态之后应该很好地学习 GUI。另外，在了解所有视觉内容之前，最好了解设计原则和模式。在不知道如何编写代码的情况下，您所拥有的只是一个损坏的 GUI。

于 2014-05-08T07:17:29.567 回答