无法在单击按钮时在 JFrame 中显示 JTable

Question

我正在尝试在运行时通过单击应用程序中的按钮(搜索按钮)添加 JTable。该表已成功显示在其他程序中，但是当我尝试在此处按钮的 actionExecute 方法中添加代码时，未显示 JTable。

GUI 是使用 netbeans GUI 创建的，但我将其移至 eclipse 并添加了数据库代码。

JTable 显示数据库中的数据。单击按钮即可检索数据。并且 JTable 应该只在按钮单击时显示，其中包含该数据位于按钮正下方的同一帧上

唯一的问题是 JTable 未显示。我尝试使用JScrollPane和JPanel，但没有成功。也尝试了其他方法。

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package lib_ss;
import java.awt.BorderLayout;
import java.awt.Font;
import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.PreparedStatement;
import java.sql.ResultSet;
import java.util.ArrayList;
import javax.swing.JPanel;
import javax.swing.JScrollPane;
import javax.swing.JTable;
import javax.swing.SwingConstants;
import javax.swing.table.DefaultTableCellRenderer;
import javax.swing.table.DefaultTableModel;
import javax.swing.table.TableColumn;

public class NewJFrame2 extends javax.swing.JFrame {
public int id=0;
public void getId(int i)
{
id=i;
}

JScrollPane  pane;
TableColumn column;
ResultSet rs=null;
String col[]={"ID","NAME","AUTHOR","DEPT","Location","Publisher","Edition"};
ArrayList<String[]> values = new ArrayList<>();
DefaultTableModel model;
JTable table;
int k=0;
private Connection con;
public void connect()
{
try {
Class.forName("oracle.jdbc.OracleDriver");
con=DriverManager.getConnection("jdbc:oracle:thin:@127.0.0.1:1521:xe","system","manhattan");
} catch (Exception e) 
{
e.printStackTrace();
}
}
/**
* Creates new form NewJFrame2
*/
public NewJFrame2() {
initComponents();

}
NewJFrame2(NewJFrame1 aThis) {
throw new UnsupportedOperationException("Not supported yet."); //To change body of generated methods, choose Tools | Templates.
}

/**
* 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">//GEN-BEGIN:initComponents
public void initComponents() {
buttonGroup1 = new javax.swing.ButtonGroup();
buttonGroup2 = new javax.swing.ButtonGroup();
jButton1 = new javax.swing.JButton();
jButton2 = new javax.swing.JButton();
jButton3 = new javax.swing.JButton();
jLabel1 = new javax.swing.JLabel();


setDefaultCloseOperation(javax.swing.WindowConstants.EXIT_ON_CLOSE);
getContentPane().setLayout(new org.netbeans.lib.awtextra.AbsoluteLayout());
jButton1.setFont(new java.awt.Font("Tahoma", 1, 10)); // NOI18N
jButton1.setText("Log Out");
jButton1.addActionListener(new java.awt.event.ActionListener() {
public void actionPerformed(java.awt.event.ActionEvent evt) {
jButton1ActionPerformed(evt);
}
});
getContentPane().add(jButton1, new org.netbeans.lib.awtextra.AbsoluteConstraints(1060, 50, -1, -1));
jButton2.setFont(new java.awt.Font("Tahoma", 1, 18)); // NOI18N
jButton2.setIcon(new javax.swing.ImageIcon(getClass().getResource("/lib_ss/mic1.png"))); // NOI18N
jButton2.setText("Search");
jButton2.addActionListener(new java.awt.event.ActionListener() {
public void actionPerformed(java.awt.event.ActionEvent evt) {
jButton2ActionPerformed(evt);
}
});
getContentPane().add(jButton2, new org.netbeans.lib.awtextra.AbsoluteConstraints(619, 124, -1, -1));
jButton3.setFont(new java.awt.Font("Tahoma", 1, 18)); // NOI18N
jButton3.setText("Previous Records");
jButton3.addActionListener(new java.awt.event.ActionListener() {
public void actionPerformed(java.awt.event.ActionEvent evt) {
jButton3ActionPerformed(evt);
}
});
getContentPane().add(jButton3, new org.netbeans.lib.awtextra.AbsoluteConstraints(320, 124, 203, 56));
jLabel1.setIcon(new javax.swing.ImageIcon(getClass().getResource("/lib_ss/url1.jpg"))); // NOI18N
jLabel1.setText("jLabel1");
getContentPane().add(jLabel1, new org.netbeans.lib.awtextra.AbsoluteConstraints(0, 0, 1230, 740));
pack();
}// </editor-fold>//GEN-END:initComponents
public void jButton1ActionPerformed(java.awt.event.ActionEvent evt) {//GEN-FIRST:event_jButton1ActionPerformed
// TODO add your handling code here:
NewJFrame1 frame = new NewJFrame1();
frame.setVisible(true);
this.dispose();
}//GEN-LAST:event_jButton1ActionPerformed

public void jButton3ActionPerformed(java.awt.event.ActionEvent evt)
{
try {
Class.forName("oracle.jdbc.OracleDriver");
con=DriverManager.getConnection("jdbc:oracle:thin:@127.0.0.1:1521:xe","system","manhattan");
PreparedStatement ps=con.prepareStatement("select * from records where    stid=?");
ps.setInt(6,id);
//ps.setString(2,"bruce");

rs=ps.executeQuery();
if (rs.next()) 
{            }

}
catch(Exception e)
{
e.printStackTrace();
}
}

//Search Button
public void jButton2ActionPerformed(java.awt.event.ActionEvent evt) 
{
int i=0;

try {
Class.forName("oracle.jdbc.OracleDriver");
con=DriverManager.getConnection("jdbc:oracle:thin:@127.0.0.1:1521:xe","system","manhattan");
PreparedStatement ps=con.prepareStatement("select * from books where name=? or author=?");
ps.setString(1,"java");
ps.setString(2,"bruce");
rs=ps.executeQuery();

/* for (int l = 0; l < 7; l++) {
column = table.getColumnModel().getColumn(l);
if (l==0) {
column.setPreferredWidth(25); 
}
if (l == 1||l==2) {
column.setPreferredWidth(90); 
}
if (l == 3||l==5) {
column.setPreferredWidth(145); 
} 
if(l==4||l==6) {
column.setPreferredWidth(87);
}
}
*/
/*model = new DefaultTableModel(col,7);
DefaultTableCellRenderer rightRenderer = new  DefaultTableCellRenderer();
rightRenderer.setHorizontalAlignment(SwingConstants.RIGHT);

while (rs.next()) 
{           
String arr[] ={Integer.toString(rs.getInt("ID")),
rs.getString("NAME"),rs.getString("AUTHOR"),
rs.getString("DEPT"),rs.getString("LOC"),
rs.getString("PUBLISHER"),rs.getString("EDITION")};
table.setFont(new Font("Serif", Font.PLAIN, 20));
for(int j=0;j<7;j++)
{                        
if(k<arr.length&&i<10)      
{table.setValueAt(arr[k],i,j);
table.getColumnModel().getColumn(j).setCellRenderer(rightRenderer);
k++;
}   
}
i++;    }
*/

while (rs.next()) {
String arr[] ={
Integer.toString(rs.getInt("ID")),
rs.getString("NAME"),rs.getString("AUTHOR"),
rs.getString("DEPT"),rs.getString("LOC"),
rs.getString("PUBLISHER"),rs.getString("EDITION")
};
values.add(arr);
}


String[][] data = values.toArray(new String[values.size()][]);
model = new DefaultTableModel(data,col);
table.setModel(model);

/*   if(rs.next())
{
String msg = "BOOK FOUND";
JLabel label = new JLabel(msg);
label.setFont(new Font("serif", Font.PLAIN, 18));
JOptionPane.showMessageDialog(null, label);
}
else
{String msg = "BOOK NOT FOUND";
JLabel label = new JLabel(msg);
label.setFont(new Font("serif", Font.PLAIN, 18));
JOptionPane.showMessageDialog(null, label);}
*/


System.out.println("hello");

//table.setAutoResizeMode(JTable.AUTO_RESIZE_ALL_COLUMNS)   

/*
JScrollPane scroll=new JScrollPane(table);
//JPanel panel=new JPanel();
//panel.add(scroll);
//getContentPane().add(scroll,BorderLayout.CENTER);
*/

JScrollPane scroll=new JScrollPane(table);
JPanel panel=new JPanel();
panel.add(scroll);
getContentPane().add(panel);
revalidate();
repaint();

//JScrollPane scroll=new JScrollPane(table);
/*
JPanel p=new JPanel();
p.add(table);
add(p);
*/
//table.setBounds(200,200,100,100);
//table.setLocation(200,200);
//setVisible(true);
//setSize(900,900);
//getContentPane().add(pane);
//setLayout(new FlowLayout());
//setDefaultCloseOperation(EXIT_ON_CLOSE);
}
catch (Exception e) 
{
e.printStackTrace();
}

}//GEN-LAST:event_jButton2ActionPerformed

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(NewJFrame2.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
} catch (InstantiationException ex) {
java.util.logging.Logger.getLogger(NewJFrame2.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
} catch (IllegalAccessException ex) {
java.util.logging.Logger.getLogger(NewJFrame2.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
} catch (javax.swing.UnsupportedLookAndFeelException ex) {
java.util.logging.Logger.getLogger(NewJFrame2.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
}
//</editor-fold>
/* Create and display the form */
java.awt.EventQueue.invokeLater(new Runnable() {
@Override
public void run() {
new NewJFrame2().setVisible(true);
}
});
}
// Variables declaration - do not modify//GEN-BEGIN:variables
private javax.swing.ButtonGroup buttonGroup1;
private javax.swing.ButtonGroup buttonGroup2;
private javax.swing.JButton jButton1;
private javax.swing.JButton jButton2;
private javax.swing.JButton jButton3;
private javax.swing.JLabel jLabel1;
// End of variables declaration//GEN-END:variables
}

这是错误：

Exception in thread "AWT-EventQueue-0" java.lang.NullPointerException
at javax.swing.ImageIcon.<init>(ImageIcon.java:217)
at lib_ss.NewJFrame2.initComponents(NewJFrame2.java:128)
at lib_ss.NewJFrame2.<init>(NewJFrame2.java:64)
at lib_ss.NewJFrame2$4.run(NewJFrame2.java:364)
at java.awt.event.InvocationEvent.dispatch(InvocationEvent.java:311)
at java.awt.EventQueue.dispatchEventImpl(EventQueue.java:749)
at java.awt.EventQueue.access$500(EventQueue.java:97)
at java.awt.EventQueue$3.run(EventQueue.java:702)
at java.awt.EventQueue$3.run(EventQueue.java:696)
at java.security.AccessController.doPrivileged(Native Method)
at java.security.ProtectionDomain$1.doIntersectionPrivilege(ProtectionDomain.java:75)
at java.awt.EventQueue.dispatchEvent(EventQueue.java:719)
at java.awt.EventDispatchThread.pumpOneEventForFilters(EventDispatchThread.java:201)
at java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:116)
at java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:105)
at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:101)
at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:93)
at java.awt.EventDispatchThread.run(EventDispatchThread.java:82)

Answer 1

我在我的一个应用程序中也做了同样的事情。

我所做的是，我在主面板上添加一个JPanel，然后使用 Netbeans GUI 在该面板上添加一个JTable。

最初，使用JPanel.setVisible(false);.. 隐藏包含表格的JPanel，以便在按下按钮之前不会显示。

在按钮的actionPerformed中，像这样编写代码： 假设您的JPanel是否有名称"面板"，JTable的名称为"选项卡">

panel.setVisible(true);
DefaultTableModel model= (DefaultTableModel) tab.getModel();
//your code to get data from database
while (rs.next()){
Object rowData= new Object[7]; //as your table has 7 fields/columns
rowData[0]=rs.getInt("ID");
rowData[1]=rs.getString("NAME");
rowData[2]=rs.getString("AUTHOR");
rowData[3]=rs.getString("DEPT");
rowData[4]=rs.getString("LOC");
rowData[5]=rs.getString("PUBLISHER");
rowData[6]=rs.getString("EDITION");
}
model.addRow(rowData);

根据您的需要修改此代码...它有效。

Answer 2

我的建议是在：

//getContentPane().add(scroll,BorderLayout.CENTER);

添加以下行：

revalidate();
repaint();

同时替换行

/*
JScrollPane scroll=new JScrollPane(table);
//JPanel panel=new JPanel();
//panel.add(scroll);
//getContentPane().add(scroll,BorderLayout.CENTER);
*/

跟

JScrollPane scroll=new JScrollPane(table);
JPanel panel=new JPanel();
panel.add(scroll);
getContentPane().add(panel);

新异常后编辑

您的主要问题在于这一行javax.swing.JTable.setValueAt(JTable.java:2742)方法jButton2ActionPerformed.研究您的代码，我发现要初始化DefaultTableModel，您使用了以下行：

model = new DefaultTableModel(col,10); 

在这里，我找不到变量col在您上传的代码中初始化的位置。我觉得col可能已被初始化为0.因此，如果col值0则DefaultTableModel将具有 0 列，因此当您尝试向其添加数据时ArrayIndexOutOfBoundsException会发生此异常。此外，您还指定表的行数为10。现在，如果ResultSet返回超过 10 行，将再次发生ArrayIndexOutOfBoundsException。

我的建议是，在从ResultSet对象收集所有数据后初始化DefaultTableModel，如下图所示：

1. 首先，在while循环从实例中检索数据之前声明并初始化ArrayListString[]类型的valuesrs如下所示：

   ArrayList<String[]> values = new ArrayList<>();
   

2. 在while循环中，从rs对象检索数据，而不是将数据添加到table变量setValueAt将数据添加到ArrayList对象values如下所示：

   while (rs.next()) {
   String arr[] ={
   Integer.toString(rs.getInt("ID")),
   rs.getString("NAME"),rs.getString("AUTHOR"),
   rs.getString("DEPT"),rs.getString("LOC"),
   rs.getString("PUBLISHER"),rs.getString("EDITION")
   };
   values.add(arr);
   }
   

3. 创建一个新的String[]变量 比如columnNames来存储列的名称。这些名称将在表的标题中显示为列的名称，如下所示：

   String[] columnNames = {
   "ID","NAME","AUTHOR",
   "DEPT","LOC",
   "PUBLISHER","EDITION"
   };
   

4. 现在使用构造函数DefaultTableModel(Object[][] data,Object[] columnNames)初始化DefaultTableModel变量model。当我们调用values.toArray()时，我们会得到data，这基本上是String[][]型 .如下所示：

   String[][] data = values.toArray(new String[values.size()][]);
   model = new DefaultTableModel(data,columnNames);
   

5. 最后，将model变量设置为JTable的Model，如图所示。

   table.setModel(model);
   

上面的建议不仅照顾了由于您的初始代码而导致的ArrayIndexOutOfBoundsException，而且还照顾了这样一个事实，即如果rs对象返回的行数超过 10。我希望这将解决您当前的问题。

您的完整代码

package lib_ss;
import java.awt.BorderLayout;
import java.awt.Font;
import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.PreparedStatement;
import java.sql.ResultSet;
import java.util.ArrayList;
import java.awt.Dimension;
import javax.swing.JPanel;
import javax.swing.JScrollPane;
import javax.swing.JTable;
import javax.swing.SwingConstants;
import javax.swing.table.DefaultTableCellRenderer;
import javax.swing.table.DefaultTableModel;
import javax.swing.table.TableColumn;
import javax.swing.JButton;
import javax.swing.JLabel;
public class NewJFrame2 extends javax.swing.JFrame {
String[] col={"ID","NAME","AUTHOR","DEPT","Location","Publisher","Edition"};
private Connection con;
public int id=0;
public void getId(int i){
id=i;
}   
public void connect(){
try {
Class.forName("oracle.jdbc.OracleDriver");
con=DriverManager.getConnection("jdbc:oracle:thin:@127.0.0.1:1521:xe","system","manhattan");
} catch (Exception e){
e.printStackTrace();
}
}
/**
* Creates new form NewJFrame2
*/
public NewJFrame2() {
initComponents();
}
NewJFrame2(NewJFrame1 aThis) {
throw new UnsupportedOperationException("Not supported yet."); //To change body of generated methods, choose Tools | Templates.
}

/**
* 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">//GEN-BEGIN:initComponents
public void initComponents() {
JButton jButton1 = new JButton();
JButton jButton2 = new JButton();
JButton jButton3 = new JButton();
JLabel jLabel1 = new JLabel();
getContentPane().setLayout(new java.awt.FlowLayout());
setDefaultCloseOperation(javax.swing.WindowConstants.EXIT_ON_CLOSE);
jButton1.setFont(new java.awt.Font("Tahoma", 1, 10)); // NOI18N
jButton1.setText("Log Out");
jButton1.addActionListener(new java.awt.event.ActionListener() {
public void actionPerformed(java.awt.event.ActionEvent evt) {
jButton1ActionPerformed(evt);
}
});
getContentPane().add(jButton1);

jButton2.setFont(new java.awt.Font("Tahoma", 1, 18)); // NOI18N
jButton2.setIcon(new javax.swing.ImageIcon(getClass().getResource("/lib_ss/mic1.png"))); // NOI18N
jButton2.setText("Search");
jButton2.addActionListener(new java.awt.event.ActionListener() {
public void actionPerformed(java.awt.event.ActionEvent evt) {
jButton2ActionPerformed(evt);
}
});
jButton2.setVisible(true);
getContentPane().add(jButton2);

jButton3.setFont(new java.awt.Font("Tahoma", 1, 18)); // NOI18N
jButton3.setText("Previous Records");
jButton3.addActionListener(new java.awt.event.ActionListener() {
public void actionPerformed(java.awt.event.ActionEvent evt) {
jButton3ActionPerformed(evt);
}
});
getContentPane().add(jButton3);

jLabel1.setIcon(new javax.swing.ImageIcon(getClass().getResource("/lib_ss/url1.jpg"))); // NOI18N
jLabel1.setText("jLabel1");
getContentPane().add(jLabel1);
pack();
}// </editor-fold>//GEN-END:initComponents
public void jButton1ActionPerformed(java.awt.event.ActionEvent evt) {//GEN-FIRST:event_jButton1ActionPerformed
// TODO add your handling code here:
NewJFrame1 frame = new NewJFrame1();
frame.setVisible(true);
this.dispose();
}//GEN-LAST:event_jButton1ActionPerformed

public void jButton3ActionPerformed(java.awt.event.ActionEvent evt){
try {
Class.forName("oracle.jdbc.OracleDriver");
con=DriverManager.getConnection("jdbc:oracle:thin:@127.0.0.1:1521:xe","system","manhattan");
PreparedStatement ps=con.prepareStatement("select * from records where stid=?");
ps.setInt(6,id);
ResultSet rs=ps.executeQuery();
if (rs.next()){
//TODO add functionality.
}
}catch(Exception e){
e.printStackTrace();
}
}

//Search Button
public void jButton2ActionPerformed(java.awt.event.ActionEvent evt){
int i=0;
try {
Class.forName("oracle.jdbc.OracleDriver");
con=DriverManager.getConnection("jdbc:oracle:thin:@127.0.0.1:1521:xe","system","manhattan");
PreparedStatement ps=con.prepareStatement("select * from books where name=? or author=?");
ps.setString(1,"java");
ps.setString(2,"bruce");
ResultSet rs=ps.executeQuery();
ArrayList<String[]> values = new ArrayList<>();
if (rs.next()) {
String arr[] ={
Integer.toString(rs.getInt("ID")),
rs.getString("NAME"),rs.getString("AUTHOR"),
rs.getString("DEPT"),rs.getString("LOC"),
rs.getString("PUBLISHER"),rs.getString("EDITION")
};
values.add(arr);
}
String[][] data = values.toArray(new String[values.size()][]);
DefaultTableModel model = new DefaultTableModel(data,col);
JTable table = new JTable(model);
//System.out.println("hello");
JScrollPane scroll=new JScrollPane(table);
JPanel panel=new JPanel();
panel.add(scroll);
getContentPane().add(panel);
pack();
}catch (Exception e){
e.printStackTrace();
}
}//GEN-LAST:event_jButton2ActionPerformed

public static void main(String[] args){
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(NewJFrame2.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
} catch (InstantiationException ex) {
java.util.logging.Logger.getLogger(NewJFrame2.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
} catch (IllegalAccessException ex) {
java.util.logging.Logger.getLogger(NewJFrame2.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
} catch (javax.swing.UnsupportedLookAndFeelException ex) {
java.util.logging.Logger.getLogger(NewJFrame2.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
}
//</editor-fold>
/* Create and display the form */
java.awt.EventQueue.invokeLater(new Runnable() {
@Override
public void run() {
new NewJFrame2().setVisible(true);
}
});
}
// Variables declaration - do not modify//GEN-BEGIN:variables
// End of variables declaration//GEN-END:variables
}

我已经对其进行了测试，并且在没有数据库连接和图像的情况下工作正常。

Answer 3

填充数组列表

public ArrayList<classExpens> expensList()
{
ArrayList<classExpens> expensList = new ArrayList<classExpens> ();
conn=mySqlConnection.ConnectDB();
String sql="select * from tbl_name";
try{
Statement st = conn.createStatement();
rs=st.executeQuery(sql);
classExpens expens;
while(rs.next()){
expens = new classExpens(rs.getInt("id"),rs.getString("name"),rs.getString("item"),rs.getFloat("price"),rs.getString("date"));
expensList.add(expens);
}
}
catch(Exception ex){
ex.printStackTrace();
}
return expensList;
}

从数组列表分隔表

public void showTable(){
ArrayList<classExpens> list = expensList();
DefaultTableModel model = (DefaultTableModel)tblExpens.getModel();
while(tblExpens.getRowCount()>0)
{
((DefaultTableModel)tblExpens.getModel()).removeRow(0);
}
Object[]row = new Object[5];
for (int i = 0; i <list.size(); i++) {
row[0]=list.get(i).getid();
row[1]=list.get(i).getname();
row[2]=list.get(i).getitem();
row[3]=list.get(i).getprice();
row[4]=list.get(i).getdate();

model.addRow(row);
}
}

在 JForm jtextFields 或 jlabel 中显示数据

public void showItems(int index){
lblid.setText(Integer.toString(expensList().get(index).getid()));
txtName.setText(expensList().get(index).getname());
txtItem.setText(expensList().get(index).getitem());
txtprice.setText(Float.toString(expensList().get(index).getprice()));
try{
java.util.Date addDate= null;
addDate = new SimpleDateFormat("yyyy-MM-dd").parse((String)expensList().get(index).getdate());
this.Date.setDate(addDate);
}
catch(ParseException e){
JOptionPane.showMessageDialog(null,"Date and Time Error");
}
}