标签:java sql swing jframe jtable
首先抱歉我的英语不好.我会尽力了解你的问题.
我想要的只是在点击“保存”按钮时保存用户在JTable中输入的新数据.
我正在从数据库的前两列中检索学生ID,名称,并且我在第三列中添加了当前日期,并且Absent / Present作为可编辑的第四列.我有以下代码从数据库中检索数据.
**Attendance.java** :
/*
* To change this template, choose Tools | Templates
* and open the template in the editor.
*/
package shreesai;
import java.sql.Connection;
import java.sql.PreparedStatement;
import java.sql.ResultSet;
import java.text.SimpleDateFormat;
import java.util.Vector;
/**
*
* @author Admin
*/
public class Attendance{
Connection con = Connectdatabase.ConnecrDb();
java.sql.Date sqlDate = new java.sql.Date(new java.util.Date().getTime());
SimpleDateFormat fromUser = new SimpleDateFormat("dd/MM/yyyy");
String d1 = fromUser.format(sqlDate);
String d = d1.toString();
public Vector getEmployee()throws Exception
{
Vector<Vector<String>> employeeVector = new Vector<Vector<String>>();
PreparedStatement pre = con.prepareStatement("select studentid,name from student");
ResultSet rs = pre.executeQuery();
while(rs.next())
{
Vector<String> employee = new Vector<String>();
employee.add(rs.getString(1)); //Empid
employee.add(rs.getString(2));//name
employee.add(d);
employeeVector.add(employee);
}
if(con!=null)
con.close();
rs.close();
pre.close();
return employeeVector;
}
}
**出勤率GUI.java:**
/*
* To change this template, choose Tools | Templates
* and open the template in the editor.
*/
package shreesai;
import static java.awt.Frame.MAXIMIZED_BOTH;
import java.sql.Connection;
import java.util.Vector;
import javax.swing.JOptionPane;
/**
*
* @author Admin
*/
public class AttendanceGUI extends javax.swing.JFrame {
/**
* Creates new form AttendanceGUI
*/
Connection con = Connectdatabase.ConnecrDb();
private Vector<Vector<String>> data;
private Vector<String> header;
public AttendanceGUI() throws Exception {
this.setLocationRelativeTo(null);
setExtendedState(MAXIMIZED_BOTH);
Attendance att = new Attendance();
data = att.getEmployee();
header = new Vector<String>();
header.add("Student ID");
header.add("Student Name");
header.add("Date");
header.add("Absent/Present");
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() {
jScrollPane1 = new javax.swing.JScrollPane();
AttendanceT = new javax.swing.JTable();
SaveAtt = new javax.swing.JButton();
Exit = new javax.swing.JButton();
setDefaultCloseOperation(javax.swing.WindowConstants.EXIT_ON_CLOSE);
AttendanceT.setModel(new javax.swing.table.DefaultTableModel(
data,header
)
{public boolean isCellEditable(int row, int column){return true;}}
);
AttendanceT.setAutoResizeMode(javax.swing.JTable.AUTO_RESIZE_OFF);
TableColumnAdjuster tca = new TableColumnAdjuster(AttendanceT);
tca.adjustColumns();
AttendanceT.setCursor(new java.awt.Cursor(java.awt.Cursor.DEFAULT_CURSOR));
jScrollPane1.setViewportView(AttendanceT);
SaveAtt.setIcon(new javax.swing.ImageIcon(getClass().getResource("/save.png"))); // NOI18N
SaveAtt.setText("Save Attendance");
SaveAtt.addActionListener(new java.awt.event.ActionListener() {
public void actionPerformed(java.awt.event.ActionEvent evt) {
SaveAttActionPerformed(evt);
}
});
Exit.setIcon(new javax.swing.ImageIcon(getClass().getResource("/exit.png"))); // NOI18N
Exit.setText("Exit");
javax.swing.GroupLayout layout = new javax.swing.GroupLayout(getContentPane());
getContentPane().setLayout(layout);
layout.setHorizontalGroup(
layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addGroup(layout.createSequentialGroup()
.addContainerGap()
.addComponent(jScrollPane1, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE)
.addGap(18, 18, 18)
.addComponent(SaveAtt, javax.swing.GroupLayout.PREFERRED_SIZE, 175, javax.swing.GroupLayout.PREFERRED_SIZE)
.addGap(18, 18, 18)
.addComponent(Exit, javax.swing.GroupLayout.PREFERRED_SIZE, 175, javax.swing.GroupLayout.PREFERRED_SIZE)
.addContainerGap(176, Short.MAX_VALUE))
);
layout.setVerticalGroup(
layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addGroup(layout.createSequentialGroup()
.addContainerGap()
.addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.TRAILING)
.addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.BASELINE)
.addComponent(SaveAtt, javax.swing.GroupLayout.PREFERRED_SIZE, 45, javax.swing.GroupLayout.PREFERRED_SIZE)
.addComponent(Exit, javax.swing.GroupLayout.PREFERRED_SIZE, 45, javax.swing.GroupLayout.PREFERRED_SIZE))
.addComponent(jScrollPane1, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE))
.addContainerGap(javax.swing.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE))
);
pack();
}// </editor-fold>
private void SaveAttActionPerformed(java.awt.event.ActionEvent evt) {
}
/**
* @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(AttendanceGUI.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
} catch (InstantiationException ex) {
java.util.logging.Logger.getLogger(AttendanceGUI.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
} catch (IllegalAccessException ex) {
java.util.logging.Logger.getLogger(AttendanceGUI.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
} catch (javax.swing.UnsupportedLookAndFeelException ex) {
java.util.logging.Logger.getLogger(AttendanceGUI.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() {
try{
new AttendanceGUI().setVisible(true);
}
catch(Exception e){
JOptionPane.showMessageDialog(null,e);
}
}
});
}
// Variables declaration - do not modify
private javax.swing.JTable AttendanceT;
private javax.swing.JButton Exit;
private javax.swing.JButton SaveAtt;
private javax.swing.JScrollPane jScrollPane1;
// End of variables declaration
}
我运行JFrame时获得的输出:
现在,我想要的是用户将数据编辑到JTable中,就像下面的图像一样:
****单击Save Attendance按钮后,当前JTable值应输入数据库.我正在使用Sqlite数据库,它是Firefox中的插件.我在我的数据库中创建了考勤表,该表具有studentid整数,名称varchar,日期DATETIME和preab VARCHAR(用于存储特定学生是否存在)****
我希望你能解决我的问题.提前致谢.
解决方法:
当您使用DefaultTableModel时,您必须向该模型注册一个监听更改的TableModelListener的监听器. How to use TableModelListener
例:
myTable.getModel().addTableModelListener(new TableModelListener(){
@Override
public void tableChanged(TableModelEvent evt){
//code here
}
});
标签:java,sql,swing,jframe,jtable 来源: https://codeday.me/bug/20190703/1368547.html
本站声明: 1. iCode9 技术分享网(下文简称本站)提供的所有内容,仅供技术学习、探讨和分享; 2. 关于本站的所有留言、评论、转载及引用,纯属内容发起人的个人观点,与本站观点和立场无关; 3. 关于本站的所有言论和文字,纯属内容发起人的个人观点,与本站观点和立场无关; 4. 本站文章均是网友提供,不完全保证技术分享内容的完整性、准确性、时效性、风险性和版权归属;如您发现该文章侵犯了您的权益,可联系我们第一时间进行删除; 5. 本站为非盈利性的个人网站,所有内容不会用来进行牟利,也不会利用任何形式的广告来间接获益,纯粹是为了广大技术爱好者提供技术内容和技术思想的分享性交流网站。