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我有一个JTable，就是通过我的数据库连接，如何刷新当数据被添加，删除一个JTable，更新
我通过调用这个方法的初始化我的表，
private void initializeRecordsPanel(){
disableAllPanels();
lblCityJail = new JLabel("Meycauayan City Jail\r\n");
lblCityJail.setBounds(244, 11, 283, 50);
lblCityJail.setForeground(Color.BLACK);
lblCityJail.setFont(new Font("Tahoma", Font.BOLD, 25));
recordsPanel.add(lblCityJail);
btnRefresh.setVisible(true);
try{
connection();
String columns [] = {
"Last Name", "First Name", "Alias", "Sex", "Case1", "Case2"
};
int count = 0 ;
while(rs.next()){
count ++;
}
String datas[][] = new String [count] [7] ;
int i=0;
connection();
while(rs.next()){
datas[i][0]=rs.getString("lname").toString();
datas[i][1]=rs.getString("fname").toString();
datas[i][2]=rs.getString("alias").toString();
datas[i][3]=rs.getString("sex").toString();
datas[i][4]=rs.getString("case1").toString();
datas[i][5]=rs.getString("case2").toString();
datas[i][6]=rs.getString("ID").toString();
i++;
}
scrollPane_1 = new JScrollPane();
scrollPane_1.setBounds(48, 104, 650, 314);
recordsPanel.add(scrollPane_1);
tblListOfInmates = new JTable(datas, columns){
public boolean isCellEditable(int nRow, int nCol) {
return false;
}
};
//TableRowSorter<TableModel> sorter = new TableRowSorter<TableModel>(tblListOfInmates.getModel());
//tblListOfInmates.setRowSorter(sorter);
tblListOfInmates.addMouseListener(new MouseAdapter() {
@Override
public void mouseClicked(MouseEvent e) {
try{
int row = tblListOfInmates.getSelectedRow();
Table_click = tblListOfInmates.getModel().getValueAt(row, 6).toString();
if(rs.next()){
addRecord ar = new addRecord();
ar.connection();
ar.setupFrame();
ar.setSelectedRowToTextFields();
ar.edit.setVisible(false);
ar.save.setVisible(false);
ar.btnEdit.setVisible(true);
ar.setTextFieldsEditable(false);
mainframe.setEnabled(false);
ar.addWindowListener(new WindowAdapter() {
public void windowClosing(WindowEvent we) {
dispose();
MainFrame.mainframe.setEnabled(true);
}
});
st.close();
connection();
}
}catch(Exception e1){e1.printStackTrace();}
}
@Override
public void mouseEntered(MouseEvent e) {
tblListOfInmates.setCursor(new Cursor(Cursor.HAND_CURSOR));
}
@Override
public void mouseExited(MouseEvent e) {
tblListOfInmates.setCursor(new Cursor(Cursor.DEFAULT_CURSOR));
}
});
scrollPane_1.setViewportView(tblListOfInmates);
JLabel lblSelectToView = new JLabel("* Select to view full record");
lblSelectToView.setBounds(47, 74, 171, 14);
recordsPanel.add(lblSelectToView);
st.close();
connection();
}catch(Exception e){e.printStackTrace();}
recordsPanel.setVisible(true);
}
当我点击一行时，会弹出一个框架并包含我选择的数据。 然后我用这个代码更新表：
try{
connection();
String columns [] = {
"Last Name", "First Name", "Alias", "Sex", "Case1", "Case2"
};
int count = 0 ;
while(rs.next()){
count ++;
}
String datas[][] = new String [count] [7] ;
int i=0;
connection();
while(rs.next()){
datas[i][0]=rs.getString("lname").toString();
datas[i][1]=rs.getString("fname").toString();
datas[i][2]=rs.getString("alias").toString();
datas[i][3]=rs.getString("sex").toString();
datas[i][4]=rs.getString("case1").toString();
datas[i][5]=rs.getString("case2").toString();
datas[i][6]=rs.getString("ID").toString();
i++;
}
scrollPane_1 = new JScrollPane();
scrollPane_1.setBounds(48, 104, 650, 314);
recordsPanel.add(scrollPane_1);
tblListOfInmates = new JTable(datas, columns){
public boolean isCellEditable(int nRow, int nCol) {
return false;
}
};
scrollPane_1.setViewportView(tblListOfInmates);
}catch(Exception e){e.printStackTrace();}
表更新成功，但是当我再次连续点击，它给了我这个错误：
java.lang.ArrayIndexOutOfBoundsException: -1
at javax.swing.JTable$1.getValueAt(Unknown Source)
at RecordManagementSystem.MainFrame$16.mouseClicked(MainFrame.java:805)
at java.awt.AWTEventMulticaster.mouseClicked(Unknown Source)
at java.awt.Component.processMouseEvent(Unknown Source)
at javax.swing.JComponent.processMouseEvent(Unknown Source)
at java.awt.Component.processEvent(Unknown Source)
at java.awt.Container.processEvent(Unknown Source)
at java.awt.Component.dispatchEventImpl(Unknown Source)
at java.awt.Container.dispatchEventImpl(Unknown Source)
at java.awt.Component.dispatchEvent(Unknown Source)
at java.awt.LightweightDispatcher.retargetMouseEvent(Unknown Source)
at java.awt.LightweightDispatcher.processMouseEvent(Unknown Source)
at java.awt.LightweightDispatcher.dispatchEvent(Unknown Source)
at java.awt.Container.dispatchEventImpl(Unknown Source)
at java.awt.Window.dispatchEventImpl(Unknown Source)
at java.awt.Component.dispatchEvent(Unknown Source)
at java.awt.EventQueue.dispatchEventImpl(Unknown Source)
at java.awt.EventQueue.access$200(Unknown Source)
at java.awt.EventQueue$3.run(Unknown Source)
at java.awt.EventQueue$3.run(Unknown Source)
at java.security.AccessController.doPrivileged(Native Method)
at java.security.ProtectionDomain$1.doIntersectionPrivilege(Unknown Source)
at java.security.ProtectionDomain$1.doIntersectionPrivilege(Unknown Source)
at java.awt.EventQueue$4.run(Unknown Source)
at java.awt.EventQueue$4.run(Unknown Source)
at java.security.AccessController.doPrivileged(Native Method)
at java.security.ProtectionDomain$1.doIntersectionPrivilege(Unknown Source)
at java.awt.EventQueue.dispatchEvent(Unknown Source)
at java.awt.EventDispatchThread.pumpOneEventForFilters(Unknown Source)
at java.awt.EventDispatchThread.pumpEventsForFilter(Unknown Source)
at java.awt.EventDispatchThread.pumpEventsForHierarchy(Unknown Source)
at java.awt.EventDispatchThread.pumpEvents(Unknown Source)
at java.awt.EventDispatchThread.pumpEvents(Unknown Source)
at java.awt.EventDispatchThread.run(Unknown Source)
在这条线：
Table_click = tblListOfInmates.getModel().getValueAt(row, 6).toString();
'scrollPane_1.setBounds （48,104,650,314）;'Java GUI可能需要在多种平台上工作，使用不同的屏幕分辨率和使用不同的PLAF。因此，它们不利于组件的准确放置。为了组织强大的图形用户界面，请使用布局管理器或[它们的组合]（http://stackoverflow.com/a/5630271/418556）以及[空格]的布局填充和边框（http： //stackoverflow.com/q/17874717/418556）。 –
1）为了更快地获得更好的帮助，请发布[MCTaRE]（http://stackoverflow.com/help/mcve）（最小完整测试和可读示例）。 2）不要更新表格，更新模型。其他一切都是自动的。 –