java 为什么我不能使用 DefaultTableModel？我错过了一些明显的东西吗？(爪哇)
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Why can't I use DefaultTableModel? Am I missing something Obvious? (Java)
提问by Giga Tocka
Here is my code:
这是我的代码：
import javax.swing.*;
import java.awt.*;
import java.awt.event.*;
class Test{
static CardLayout cardLayout;
static JPanel card = new JPanel();
public static void main(String[] args) {
JFrame frame = new JFrame("AddressBook");
JPanel contentPane = (JPanel)frame.getContentPane();
card.setLayout(cardLayout = new CardLayout());
JPanel cardTop = new JPanel();
DefaultTableModel model = new DefaultTableModel();
model.addColumn("Name");
model.addColumn("Number");
String[] John = {"John", "1234"};
model.addRow(John);
String[] Beth = {"Beth", "4444"};
model.addRow(John);
JTable table = new JTable(model);
JScrollPane jsp = new JScrollPane(table);
cardTop.add(jsp);
card.add("Card Top", cardTop);
contentPane.add(card);
frame.setVisible(true);
frame.setSize(507, 191);
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
frame.setResizable(false);
}
}
When I try to compile, it says it doesn't recognize DefaultTableModel. Also, the code above is part of my main and I'm sure I've imported the right libraries.
当我尝试编译时，它说它无法识别 DefaultTableModel。另外，上面的代码是我的主要内容的一部分，我确定我已经导入了正确的库。
Here is the error:
这是错误：
Test.java:15: error: cannot find symbol
DefaultTableModel model = new DefaultTableModel();
^
symbol: class DefaultTableModel
location: class Test
Test.java:15: error: cannot find symbol
DefaultTableModel model = new DefaultTableModel();
^
symbol: class DefaultTableModel
location: class Test
2 errors
Help please?
请帮忙？
回答by MadProgrammer
import javax.swing.*;
import java.awt.*;
import java.awt.event.*;
Isn't enough.
还不够。
DefaultTableModellives in the javax.swing.tablepackage, you need to include it in with your imports...
DefaultTableModel存在于javax.swing.table包中，您需要将其包含在导入中...
import javax.swing.table.*
