将来自外部类的新数据插入到Jtable中 [英] Inserting new data from External class into Jtable
问题描述
我是Stack Overflow的新手，正在我上大学的Java应用程序上寻求帮助.
i am new to Stack overflow and looking for some help on a java app i have been working on at college.
我的问题是，如何使用按钮动作侦听器事件将Jtextfield(外部类中)的整数插入Jtable.
My questions is, how do I insert an integer from a Jtextfield (in external class) into a Jtable using a button action listener event.
我的代码是:
用于将jtextfield整数插入表中的外部类按钮代码
package banknew;
import javax.swing.JButton;
import javax.swing.JFrame;
import javax.swing.JMenu;
import javax.swing.JMenuBar;
import javax.swing.JMenuItem;
import javax.swing.JPanel;
import java.awt.*;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import javax.swing.*;
import javax.swing.event.ListSelectionEvent;
import javax.swing.event.ListSelectionListener;
import javax.swing.event.TableModelListener;
import javax.swing.table.DefaultTableModel;
import javax.swing.table.TableModel;
public class CheckingAccount extends BANKNEW
{
final JButton DepositAmount = new JButton("Deposit");
final JTextField tAmount = new JTextField();
public void CheckingAccount() {
String title = "Checking Account";
JFrame checkingAccount = new JFrame(title);
checkingAccount.setDefaultCloseOperation(JFrame.DISPOSE_ON_CLOSE);
checkingAccount.setSize(400, 200);
checkingAccount.setLocation(checkingAccount.getHeight() / 2, checkingAccount.getWidth() / 2);
final JLabel error = new JLabel("");
checkingAccount.add(error, BorderLayout.SOUTH);
error.setVisible(true);
error.setLocation(5, 600);
JMenuItem file1 = new JMenuItem("Checking Account");
JMenuItem file2 = new JMenuItem("Checking Accounts");
JMenuItem file3 = new JMenuItem("Checking Accounts");
JMenuItem file4 = new JMenuItem("Bank Account");
JMenuItem file5 = new JMenuItem("Close");
JMenu filemenu = new JMenu("File");
filemenu.add(file1);
filemenu.add(file2);
filemenu.add(file3);
filemenu.addSeparator();
filemenu.add(file4);
filemenu.addSeparator();
filemenu.add(file5);
JMenuBar menubar = new JMenuBar();
menubar.add(filemenu);
checkingAccount.setJMenuBar(menubar);
BorderLayout border = new BorderLayout();
filemenu.setLayout(border);
checkingAccount.setVisible(true);
/**
* ****************************************
* Create Second JPanel - Buttons & ComboBox .
*****************************************
*/
JPanel abuttons1 = new JPanel();
checkingAccount.add(abuttons1);
//abuttons1.setBorder(javax.swing.BorderFactory.createEtchedBorder());
abuttons1.setBorder(BorderFactory.createTitledBorder(""));
JButton Withdraw = new JButton("Withdraw");
JLabel transBankName1 = new JLabel("Account Name:");
JLabel transAmount = new JLabel("Amount:");
final JTextField tBankName1 = new JTextField(20);
final JComboBox AccountName = new JComboBox();
AccountName.setEditable(false);
AccountName.setMaximumSize(new java.awt.Dimension(100, 20));
AccountName.setBorder(javax.swing.BorderFactory.createEtchedBorder());
transBankName1.setMaximumSize(new java.awt.Dimension(100, 20));
transAmount.setMaximumSize(new java.awt.Dimension(100, 20));
tAmount.setMaximumSize(new java.awt.Dimension(100, 20));
tBankName1.setMaximumSize(new java.awt.Dimension(00, 20));
abuttons1.setLayout(new GridLayout(5, 1, 5, 5));
abuttons1.add(transBankName1);
abuttons1.add(AccountName);
abuttons1.add(transAmount);
abuttons1.add(tAmount);
abuttons1.add(Withdraw);
abuttons1.add(DepositAmount);
abuttons1.setLocation(0, 0);
abuttons1.setSize(300,200);
DepositAmount.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent e) {
if (table.getSelectedRow() > -1) {
// assuming from your code that you want to set the
// textfield's value at the table's selected row
try {
Integer amount = Integer.parseInt(tAmount.getText());
table.getModel().setValueAt(amount, table.getSelectedRow(), 4);
} catch (NumberFormatException nfe) {
// User did not provide a number.
// do nothing? show dialog? you name it!
}
}
}
});
}
}
- External类具有一个带有Textfield和"Deposit"按钮的GUI.
- 主类具有一个带有5列JTable的GUI
我想做的就是拥有一个带有Button的外部扩展类，然后单击按钮，将本地文本字段中的数量插入到主Jtable中，如"abc"表模型中的代码所示.
All i want to be able to do is have an external extended class with a Button, and on button click insert amount from local textfield into the main Jtable as shown in the code with the 'abc' table model.
我已经搜索过Google和堆栈溢出，但是大多数帖子都与SQL或数据库链接有关.
I have searched google and stack overflow but most posts are related to SQL or database linkage.
如果有人能指出我正确的方向，我将不胜感激.
If anyone can point me in the right direction, i would be very grateful.
谢谢
复制并粘贴代码，然后尝试上传主类，复制完后让我知道...
推荐答案
有点不确定类的全局设置. 但是，如果应该将CheckingAccount写入表，则需要在其构造函数中为其提供对表的引用.
Am a bit unsure of the more global setup of your classes. But if the CheckingAccount is supposed to write to the table, it'll need to be provided a reference to the table in its constructor.
public class CheckingAccount {
final JButton depositAmount = new JButton("Deposit");
final JTextField tAmount = new JTextField();
//Provide the JTable to the CheckingAccount when you construct it!
public CheckingAccount(final JTable table) {
depositAmountButton.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent e) {
if (table.getSelectedRow() > -1) {
// assuming from your code that you want to set the
// textfield's value at the table's selected row
try {
Integer amount = Integer.parseInt(textField.getText());
table.getModel().setValueAt(amount, table.getSelectedRow(), 4);
} catch (NumberFormatException nfe) {
// User did not provide a number.
// do nothing? show dialog? you name it!
}
}
}
});
}
}
要了解有关如何使用Swing的更多信息，请查看 Oracle教程
To learn a bit more about how to use Swing, take a look at the Oracle tutorials
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