在 java 中添加动作执行和验证输入组件？

Question

我正在设计一个 swing 界面，如下所示：

在文本字段中填写信息并点击 "add" 按钮后，所有信息将出现在 table below.Here 是我的代码：

 private void AddActionPerformed(java.awt.event.ActionEvent evt) {                                    
    Vector record = new Vector();
    record.add(Name);
    record.add(Email);
    record.add(Address);
    record.add(PhoneNumber);

    String name = this.Name.getText();
    String email = this.Email.getText();
    String address = this.Address.getText();
    String phone = this.PhoneNumber.getText();
    System.out.println(phone);
    DefaultTableModel model = (DefaultTableModel)tblCustomer.getModel();
    model.insertRow(ERROR, record);

}

但是当我点击 "add" 按钮时，除了这些异常之外没有任何反应

Exception in thread "AWT-EventQueue-0" java.lang.ArrayIndexOutOfBoundsException: 64 > 4
at java.util.Vector.insertElementAt(Vector.java:598)
at javax.swing.table.DefaultTableModel.insertRow(DefaultTableModel.java:374)
at NewJFrame.AddActionPerformed(NewJFrame.java:290)
at NewJFrame.access0(NewJFrame.java:16)
at NewJFrame.actionPerformed(NewJFrame.java:155)
at javax.swing.AbstractButton.fireActionPerformed(AbstractButton.java:2022)
at javax.swing.AbstractButton$Handler.actionPerformed(AbstractButton.java:2348)
at javax.swing.DefaultButtonModel.fireActionPerformed(DefaultButtonModel.java:402)
at javax.swing.DefaultButtonModel.setPressed(DefaultButtonModel.java:259)
at javax.swing.plaf.basic.BasicButtonListener.mouseReleased(BasicButtonListener.java:252)
at java.awt.Component.processMouseEvent(Component.java:6535)
at javax.swing.JComponent.processMouseEvent(JComponent.java:3324)
at java.awt.Component.processEvent(Component.java:6300)
at java.awt.Container.processEvent(Container.java:2236)
at java.awt.Component.dispatchEventImpl(Component.java:4891)
at java.awt.Container.dispatchEventImpl(Container.java:2294)
at java.awt.Component.dispatchEvent(Component.java:4713)
at java.awt.LightweightDispatcher.retargetMouseEvent(Container.java:4888)
at java.awt.LightweightDispatcher.processMouseEvent(Container.java:4525)
at java.awt.LightweightDispatcher.dispatchEvent(Container.java:4466)
at java.awt.Container.dispatchEventImpl(Container.java:2280)
at java.awt.Window.dispatchEventImpl(Window.java:2750)
at java.awt.Component.dispatchEvent(Component.java:4713)
at java.awt.EventQueue.dispatchEventImpl(EventQueue.java:758)
at java.awt.EventQueue.access0(EventQueue.java:97)
at java.awt.EventQueue.run(EventQueue.java:709)
at java.awt.EventQueue.run(EventQueue.java:703)
at java.security.AccessController.doPrivileged(Native Method)
at java.security.ProtectionDomain$JavaSecurityAccessImpl.doIntersectionPrivilege(ProtectionDomain.java:76)
at java.security.ProtectionDomain$JavaSecurityAccessImpl.doIntersectionPrivilege(ProtectionDomain.java:86)
at java.awt.EventQueue.run(EventQueue.java:731)
at java.awt.EventQueue.run(EventQueue.java:729)
at java.security.AccessController.doPrivileged(Native Method)
at java.security.ProtectionDomain$JavaSecurityAccessImpl.doIntersectionPrivilege(ProtectionDomain.java:76)
at java.awt.EventQueue.dispatchEvent(EventQueue.java:728)
at java.awt.EventDispatchThread.pumpOneEventForFilters(EventDispatchThread.java:201)
at java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:116)
at java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:105)
at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:101)
at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:93)
at java.awt.EventDispatchThread.run(EventDispatchThread.java:82)

谁能指出问题所在？另外，如何在插入 table 之前验证输入组件？示例：如果名称文本字段为空，它将提前发送 user.Thanks 的错误消息，对不起我的英语。

Answer 1

那是因为您没有向 record 向量添加任何内容，您应该在从字段中获取文本后添加变量，试试这个：

private void AddActionPerformed(java.awt.event.ActionEvent evt) {                                    
    Vector record = new Vector();

    String name = this.Name.getText();
    String email = this.Email.getText();
    String address = this.Address.getText();
    String phone = this.PhoneNumber.getText();

    record.add(name);
    record.add(email);
    record.add(address);
    record.add(phone);

    System.out.println(phone);
    DefaultTableModel model = (DefaultTableModel)tblCustomer.getModel();
    model.insertRow(ERROR, record);

}

Answer 2

Exception in thread "AWT-EventQueue-0" java.lang.ArrayIndexOutOfBoundsException: 64 > 4

model.insertRow(ERROR, record);

您不能随意在 table 中的任意位置插入一行。 TableModel 中只有 4 行，因此只能在索引 0、1、2、3、4 处插入行。

我建议您只使用：

model.addRow( record );

方法。然后，无论 table.

中有多少行，该行都将添加到 table 的末尾

在 java 中添加动作执行和验证输入组件？

Add action perfom and validate input components in java?

java

swing

jtable

tablemodel

defaulttablemodel