JTable 錯誤：我試圖在文本欄位中顯示 JTable 中選定的行值，但我不斷收到此錯誤，老實說，我無法追蹤它。
這是代碼：
package Banner;
import java.awt.EventQueue;
import javax.swing.JFrame;
import javax.swing.JTable;
import javax.swing.JScrollPane;
import javax.swing.JLabel;
import javax.swing.JOptionPane;
import java.awt.Font;
import javax.swing.JTextField;
import javax.swing.table.DefaultTableModel;
import javax.swing.table.TableModel;
import javax.swing.JRadioButton;
import javax.swing.JComboBox;
import javax.swing.DefaultComboBoxModel;
import javax.swing.JButton;
import java.awt.event.ActionListener;
import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.PreparedStatement;
import java.sql.ResultSet;
import java.sql.SQLException;
import java.sql.Statement;
import java.util.ArrayList;
import java.awt.event.ActionEvent;
import java.awt.Choice;
import javax.swing.ButtonGroup;
import java.awt.event.WindowAdapter;
import java.awt.event.WindowEvent;
import java.awt.event.MouseAdapter;
import java.awt.event.MouseEvent;
public class ModifyUserInfo {
private JFrame ModifyLbl;
private JTable table;
private JTextField IDField;
private JTextField nameField;
private JTextField EmailField;
private JTextField MobileField;
private JTextField PasswordtextField;
private final ButtonGroup buttonGroup = new ButtonGroup();
private JRadioButton StudentRadioBtn;
private JRadioButton InstructorRadioBtn;
private JComboBox MajorBox;
/**
* Launch the application.
*/
public static void main(String[] args) {
EventQueue.invokeLater(new Runnable() {
public void run() {
try {
ModifyUserInfo window = new ModifyUserInfo();
window.ModifyLbl.setVisible(true);
} catch (Exception e) {
e.printStackTrace();
}
}
});
}
/**
* Create the application.
*/
public ModifyUserInfo() {
initialize();
showUser();
}
public ArrayList<User> userList()
{
ArrayList<User> usersList = new ArrayList<>();
try {
Connection con = con();
String query1 = "select * from userslist;";
Statement st;
st = con.createStatement();
ResultSet rs = st.executeQuery(query1);
User user;
while(rs.next()) {
user = new User(rs.getInt("ID"), rs.getString("Full Name"), rs.getString("User Type"), rs.getString("Major"), rs.getString("Personal Email"), rs.getString("Mobile"), rs.getString("Password"));
usersList.add(user);
}
} catch (Exception e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
return usersList;
}
public void showUser()
{
ArrayList<User> list = userList();
DefaultTableModel model = (DefaultTableModel) table.getModel();
Object [] row = new Object[7];
for(int i = 0; i<list.size(); i ) {
row[0] = list.get(i).getID();
row[1] = list.get(i).getFullName();
row[2] = list.get(i).getUserType();
row[3] = list.get(i).getMajor();
row[4] = list.get(i).getEmail();
row[5] = list.get(i).getMobile();
row[6] = list.get(i).getPassword();
model.addRow(row);
}
}
/**
* Initialize the contents of the frame.
*/
/**
*
*/
private void initialize() {
ModifyLbl = new JFrame();
ModifyLbl.addWindowListener(new WindowAdapter() {
@Override
public void windowOpened(WindowEvent e) {
}
});
ModifyLbl.setTitle("Modify User Info");
ModifyLbl.setBounds(100, 100, 998, 617);
ModifyLbl.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
ModifyLbl.getContentPane().setLayout(null);
JScrollPane scrollPane = new JScrollPane();
scrollPane.addMouseListener(new MouseAdapter() {
@Override
public void mouseClicked(MouseEvent e) {
}
});
scrollPane.setBounds(313, 10, 661, 560);
ModifyLbl.getContentPane().add(scrollPane);
table = new JTable();
table.addMouseListener(new MouseAdapter() {
@Override
public void mouseClicked(MouseEvent e) {
int i = table.getSelectedRow();
TableModel model = table.getModel();
IDField.setText(model.getValueAt(i, 1).toString());
nameField.setText(model.getValueAt(i, 2).toString());
PasswordtextField.setText(model.getValueAt(i, 7).toString());
String usertype = model.getValueAt(i, 3).toString();
if(usertype.equals("Student"))
{
StudentRadioBtn.setSelected(true);
}
else
{
InstructorRadioBtn.setSelected(true);
}
String major = model.getValueAt(i, 4).toString();
switch (major)
{
case "Select":
MajorBox.setSelectedIndex(0);
break;
case "ECCE":
MajorBox.setSelectedIndex(1);
break;
case "MEEN":
MajorBox.setSelectedIndex(2);
break;
case "ISYE":
MajorBox.setSelectedIndex(3);
break;
case "CHEG":
MajorBox.setSelectedIndex(4);
break;
case "GERN":
MajorBox.setSelectedIndex(5);
break;
}
EmailField.setText(model.getValueAt(i, 5).toString());
MobileField.setText(model.getValueAt(i, 6).toString());
}
});
table.setModel(new DefaultTableModel(
new Object[][] {
},
new String[] {
"ID", "Full Name", "UserType", "Major", "Personal Email", "Mobile", "Password"
}
));
table.getColumnModel().getColumn(4).setPreferredWidth(105);
scrollPane.setViewportView(table);
JLabel TitleLabel = new JLabel("Modify User Information");
TitleLabel.setFont(new Font("Tahoma", Font.PLAIN, 14));
TitleLabel.setBounds(10, 10, 217, 29);
ModifyLbl.getContentPane().add(TitleLabel);
JLabel IDLabel = new JLabel("Identification Number:");
IDLabel.setFont(new Font("Tahoma", Font.PLAIN, 12));
IDLabel.setBounds(20, 49, 133, 13);
ModifyLbl.getContentPane().add(IDLabel);
IDField = new JTextField();
IDField.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent e) {
}
});
IDField.setBounds(161, 47, 125, 19);
ModifyLbl.getContentPane().add(IDField);
IDField.setColumns(10);
JLabel UserNameLabel = new JLabel("Full Name:");
UserNameLabel.setFont(new Font("Tahoma", Font.PLAIN, 12));
UserNameLabel.setBounds(20, 88, 133, 13);
ModifyLbl.getContentPane().add(UserNameLabel);
nameField = new JTextField();
nameField.setColumns(10);
nameField.setBounds(161, 86, 125, 19);
ModifyLbl.getContentPane().add(nameField);
JLabel UserTypeLabel = new JLabel("Personal Email:");
UserTypeLabel.setFont(new Font("Tahoma", Font.PLAIN, 12));
UserTypeLabel.setBounds(20, 319, 133, 13);
ModifyLbl.getContentPane().add(UserTypeLabel);
StudentRadioBtn = new JRadioButton("Student");
buttonGroup.add(StudentRadioBtn);
StudentRadioBtn.setBounds(20, 191, 103, 21);
ModifyLbl.getContentPane().add(StudentRadioBtn);
InstructorRadioBtn = new JRadioButton("Instructor");
buttonGroup.add(InstructorRadioBtn);
InstructorRadioBtn.setBounds(183, 191, 103, 21);
ModifyLbl.getContentPane().add(InstructorRadioBtn);
JLabel MajorLabel = new JLabel("Major:");
MajorLabel.setFont(new Font("Tahoma", Font.PLAIN, 12));
MajorLabel.setBounds(20, 245, 133, 13);
ModifyLbl.getContentPane().add(MajorLabel);
MajorBox = new JComboBox();
MajorBox.setModel(new DefaultComboBoxModel(new String[] {"Select", "ECCE", "MEEN", "ISYE", "CHEG", "GERN"}));
MajorBox.setBounds(163, 242, 123, 21);
ModifyLbl.getContentPane().add(MajorBox);
JLabel UserTypeLabel_1 = new JLabel("Select User Type:");
UserTypeLabel_1.setFont(new Font("Tahoma", Font.PLAIN, 12));
UserTypeLabel_1.setBounds(20, 166, 133, 13);
ModifyLbl.getContentPane().add(UserTypeLabel_1);
EmailField = new JTextField();
EmailField.setColumns(10);
EmailField.setBounds(161, 317, 125, 19);
ModifyLbl.getContentPane().add(EmailField);
MobileField = new JTextField();
MobileField.setColumns(10);
MobileField.setBounds(161, 359, 125, 19);
ModifyLbl.getContentPane().add(MobileField);
JLabel lblMobileNumber = new JLabel("Mobile Number:");
lblMobileNumber.setFont(new Font("Tahoma", Font.PLAIN, 12));
lblMobileNumber.setBounds(20, 361, 133, 13);
ModifyLbl.getContentPane().add(lblMobileNumber);
JLabel lblPassword = new JLabel("Password");
lblPassword.setFont(new Font("Tahoma", Font.PLAIN, 12));
lblPassword.setBounds(20, 127, 133, 13);
ModifyLbl.getContentPane().add(lblPassword);
PasswordtextField = new JTextField();
PasswordtextField.setColumns(10);
PasswordtextField.setBounds(161, 125, 125, 19);
ModifyLbl.getContentPane().add(PasswordtextField);
JLabel contactlbl = new JLabel("Contact Information");
contactlbl.setFont(new Font("Tahoma", Font.PLAIN, 12));
contactlbl.setBounds(10, 284, 133, 13);
ModifyLbl.getContentPane().add(contactlbl);
JButton SaveBtn = new JButton("Save");
SaveBtn.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent e) {
try {
Connection con = con();
String query = "insert into userslist values (?, ?, ?, ?, ? ,? ,?)";
PreparedStatement pSt = con.prepareStatement(query);
pSt.setString(1, IDField.getText());
pSt.setString(2, nameField.getText());
if(StudentRadioBtn.isSelected())
pSt.setString(3, "Student");
else if(InstructorRadioBtn.isSelected())
pSt.setString(3, "Instructor");
String major = MajorBox.getSelectedItem().toString();
pSt.setString(4, major);
pSt.setString(5, EmailField.getText());
pSt.setString(6, MobileField.getText());
pSt.setString(7, PasswordtextField.getText());
pSt.executeUpdate();
DefaultTableModel model = (DefaultTableModel) table.getModel();
model.setRowCount(0);
showUser();
JOptionPane.showMessageDialog(null, "Registered Successfully!");
} catch (Exception e1) {
// TODO Auto-generated catch block
e1.printStackTrace();
}
}
});
SaveBtn.setBounds(153, 477, 133, 40);
ModifyLbl.getContentPane().add(SaveBtn);
JButton EditBtn = new JButton("Edit");
EditBtn.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent e) {
IDField.setText("");
nameField.setText("");
PasswordtextField.setText("");
buttonGroup.clearSelection();
MajorBox.setSelectedIndex(0);
EmailField.setText("");
MobileField.setText("");
}
});
EditBtn.setBounds(153, 427, 133, 40);
ModifyLbl.getContentPane().add(EditBtn);
JButton ResetBtn_1 = new JButton("Reset");
ResetBtn_1.setBounds(10, 427, 133, 40);
ModifyLbl.getContentPane().add(ResetBtn_1);
JButton DeleteBtn = new JButton("Delete");
DeleteBtn.setBounds(10, 477, 133, 40);
ModifyLbl.getContentPane().add(DeleteBtn);
}
static Connection con()
{
try {
Class.forName("com.mysql.cj.jdbc.Driver");
Connection c = DriverManager.getConnection("jdbc:mysql://localhost:3306/usersdatabase", "root", "fatima2002");
return c;
}
catch(Exception e)
{
System.out.println("Connection Failed" e);
}
return null;
}
}
Exception in thread "AWT-EventQueue-0" java.lang.ArrayIndexOutOfBoundsException: 7 >= 7
at java.base/java.util.Vector.elementAt(Vector.java:466)
at java.desktop/javax.swing.table.DefaultTableModel.getValueAt(DefaultTableModel.java:661)
at Banner.ModifyUserInfo$4.mouseClicked(ModifyUserInfo.java:206)
at java.desktop/java.awt.AWTEventMulticaster.mouseClicked(AWTEventMulticaster.java:278)
at java.desktop/java.awt.Component.processMouseEvent(Component.java:6620)
at java.desktop/javax.swing.JComponent.processMouseEvent(JComponent.java:3342)
at java.desktop/java.awt.Component.processEvent(Component.java:6382)
at java.desktop/java.awt.Container.processEvent(Container.java:2264)
at java.desktop/java.awt.Component.dispatchEventImpl(Component.java:4993)
at java.desktop/java.awt.Container.dispatchEventImpl(Container.java:2322)
at java.desktop/java.awt.Component.dispatchEvent(Component.java:4825)
at java.desktop/java.awt.LightweightDispatcher.retargetMouseEvent(Container.java:4934)
at java.desktop/java.awt.LightweightDispatcher.processMouseEvent(Container.java:4572)
at java.desktop/java.awt.LightweightDispatcher.dispatchEvent(Container.java:4504)
at java.desktop/java.awt.Container.dispatchEventImpl(Container.java:2308)
at java.desktop/java.awt.Window.dispatchEventImpl(Window.java:2773)
at java.desktop/java.awt.Component.dispatchEvent(Component.java:4825)
at java.desktop/java.awt.EventQueue.dispatchEventImpl(EventQueue.java:772)
at java.desktop/java.awt.EventQueue$4.run(EventQueue.java:721)
at java.desktop/java.awt.EventQueue$4.run(EventQueue.java:715)
at java.base/java.security.AccessController.doPrivileged(AccessController.java:391)
at java.base/java.security.ProtectionDomain$JavaSecurityAccessImpl.doIntersectionPrivilege(ProtectionDomain.java:85)
at java.base/java.security.ProtectionDomain$JavaSecurityAccessImpl.doIntersectionPrivilege(ProtectionDomain.java:95)
at java.desktop/java.awt.EventQueue$5.run(EventQueue.java:745)
at java.desktop/java.awt.EventQueue$5.run(EventQueue.java:743)
at java.base/java.security.AccessController.doPrivileged(AccessController.java:391)
at java.base/java.security.ProtectionDomain$JavaSecurityAccessImpl.doIntersectionPrivilege(ProtectionDomain.java:85)
at java.desktop/java.awt.EventQueue.dispatchEvent(EventQueue.java:742)
at java.desktop/java.awt.EventDispatchThread.pumpOneEventForFilters(EventDispatchThread.java:203)
at java.desktop/java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:124)
at java.desktop/java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:113)
at java.desktop/java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:109)
at java.desktop/java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:101)
at java.desktop/java.awt.EventDispatchThread.run(EventDispatchThread.java:90)
Exception in thread "AWT-EventQueue-0" java.lang.ArrayIndexOutOfBoundsException: 7 >= 7
at java.base/java.util.Vector.elementAt(Vector.java:466)
at java.desktop/javax.swing.table.DefaultTableModel.getValueAt(DefaultTableModel.java:661)
at Banner.ModifyUserInfo$4.mouseClicked(ModifyUserInfo.java:206)
at java.desktop/java.awt.AWTEventMulticaster.mouseClicked(AWTEventMulticaster.java:278)
at java.desktop/java.awt.Component.processMouseEvent(Component.java:6620)
at java.desktop/javax.swing.JComponent.processMouseEvent(JComponent.java:3342)
at java.desktop/java.awt.Component.processEvent(Component.java:6382)
at java.desktop/java.awt.Container.processEvent(Container.java:2264)
at java.desktop/java.awt.Component.dispatchEventImpl(Component.java:4993)
at java.desktop/java.awt.Container.dispatchEventImpl(Container.java:2322)
at java.desktop/java.awt.Component.dispatchEvent(Component.java:4825)
at java.desktop/java.awt.LightweightDispatcher.retargetMouseEvent(Container.java:4934)
at java.desktop/java.awt.LightweightDispatcher.processMouseEvent(Container.java:4572)
at java.desktop/java.awt.LightweightDispatcher.dispatchEvent(Container.java:4504)
at java.desktop/java.awt.Container.dispatchEventImpl(Container.java:2308)
at java.desktop/java.awt.Window.dispatchEventImpl(Window.java:2773)
at java.desktop/java.awt.Component.dispatchEvent(Component.java:4825)
at java.desktop/java.awt.EventQueue.dispatchEventImpl(EventQueue.java:772)
at java.desktop/java.awt.EventQueue$4.run(EventQueue.java:721)
at java.desktop/java.awt.EventQueue$4.run(EventQueue.java:715)
at java.base/java.security.AccessController.doPrivileged(AccessController.java:391)
at java.base/java.security.ProtectionDomain$JavaSecurityAccessImpl.doIntersectionPrivilege(ProtectionDomain.java:85)
at java.base/java.security.ProtectionDomain$JavaSecurityAccessImpl.doIntersectionPrivilege(ProtectionDomain.java:95)
at java.desktop/java.awt.EventQueue$5.run(EventQueue.java:745)
at java.desktop/java.awt.EventQueue$5.run(EventQueue.java:743)
at java.base/java.security.AccessController.doPrivileged(AccessController.java:391)
at java.base/java.security.ProtectionDomain$JavaSecurityAccessImpl.doIntersectionPrivilege(ProtectionDomain.java:85)
at java.desktop/java.awt.EventQueue.dispatchEvent(EventQueue.java:742)
at java.desktop/java.awt.EventDispatchThread.pumpOneEventForFilters(EventDispatchThread.java:203)
at java.desktop/java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:124)
at java.desktop/java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:113)
at java.desktop/java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:109)
at java.desktop/java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:101)
at java.desktop/java.awt.EventDispatchThread.run(EventDispatchThread.java:90)
這就是我從 JTable 中選擇一行時發生的情況
請幫助它令人沮喪
uj5u.com熱心網友回復：
該錯誤表示getValueAt()正在使用超出范圍的索引。請記住，索引從 0 開始。
您的表中有 7 列（我認為，看圖片），這將是索引 0 - 6。但是您的代碼中有這個：
PasswordtextField.setText(model.getValueAt(i, 7).toString());
我相信您的所有索引都偏離了 1，因為您從 1 而不是 0 開始。
轉載請註明出處，本文鏈接：https://www.uj5u.com/ruanti/372475.html