i have made a jtable where i am giving the values manually,and saving the data in the sql by clicking the save(jButton2) button.now the problem is that when i am keeping the jtable blank and saving it..its showing data saved,but nothing is saving in the database.
And when i am putting the data in the jtable and trying to save its giving exception.
column(i,5) is getting value by multiplying column(i,3) and column(i,4)
jButton2ActionPerformed(save button) method is as follows:
private void jButton2ActionPerformed(java.awt.event.ActionEvent evt) {
// TODO add your handling code here:
try {
String sql="insert into `sampleDB`.`Item_detail` (P_name,Manuf_name,Model_no,Purchase_price,Available,total Price,Sell_price,Quality,Color,Description,profit,Cost_price,idDealerItem) values(?,?,?,?,?,?,?,?,?,?,?,?,?)";
pst=con.prepareStatement(sql);
int last=jTable1.getRowCount();
for( int i=0;i<last;i++){
if(((String) jTable1.getValueAt(i,0))!=null){
String column1= (String) jTable1.getValueAt(i,0);
String column2= (String) jTable1.getValueAt(i,1);
String column3= (String) jTable1.getValueAt(i,2);
String column4= (String) jTable1.getValueAt(i,3);
String column5= (String) jTable1.getValueAt(i,4);
String column6= (String) jTable1.getValueAt(i,5);
String column7= (String) jTable1.getValueAt(i,6);
pst.setString(1,column1);
pst.setString(2,column2);
pst.setString(3,column3);
pst.setString(4,column4);
pst.setString(5,column5);
pst.setString(6,column6);
pst.setString(7,null);
pst.setString(8,column7);
pst.setString(9,null);
pst.setString(10,null);
pst.setString(11,null);
pst.setString(12,null);
pst.setString(13,null);
pst.execute();
}
}
JOptionPane.showMessageDialog(null, "data saved");
}
catch(Exception e) {
e.printStackTrace();
}
Method where columns are getting multiplied is as follow.:
private void jTable1KeyPressed(java.awt.event.KeyEvent evt) {
// TODO add your handling code here:
if(evt.getKeyCode()==KeyEvent.VK_TAB){
int r = jTable1.getRowCount();
for (int i = 0; i < r; i++){
if(jTable1.getValueAt(i,3)!=null && jTable1.getValueAt(i,4)!=null ){
int a=Integer.parseInt(jTable1.getValueAt(i,3).toString());
int b=Integer.parseInt(jTable1.getValueAt(i,4).toString());
int d= a*b;
jTable1.setValueAt(d,i,5);
}
}
}
}
new error is:
com.mysql.jdbc.exceptions.jdbc4.MySQLSyntaxErrorException: You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near 'Price,Sell_price,Quality,Color,Description,profit,Cost_price,idDealerItem) value' at line 1
at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:57)
at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
at java.lang.reflect.Constructor.newInstance(Constructor.java:526)
at com.mysql.jdbc.Util.handleNewInstance(Util.java:409)
at com.mysql.jdbc.Util.getInstance(Util.java:384)
at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:1054)
at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:3566)
at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:3498)
at com.mysql.jdbc.MysqlIO.sendCommand(MysqlIO.java:1959)
at com.mysql.jdbc.MysqlIO.sqlQueryDirect(MysqlIO.java:2113)
at com.mysql.jdbc.ConnectionImpl.execSQL(ConnectionImpl.java:2568)
at com.mysql.jdbc.PreparedStatement.executeInternal(PreparedStatement.java:2113)
at com.mysql.jdbc.PreparedStatement.execute(PreparedStatement.java:1364)
at Extra.jButton2ActionPerformed(Extra.java:331)
at Extra.access$300(Extra.java:14)
at Extra$4.actionPerformed(Extra.java:121)
at javax.swing.AbstractButton.fireActionPerformed(AbstractButton.java:2018)
at javax.swing.AbstractButton$Handler.actionPerformed(AbstractButton.java:2341)
at javax.swing.DefaultButtonModel.fireActionPerformed(DefaultButtonModel.java:402)
at javax.swing.DefaultButtonModel.setPressed(DefaultButtonModel.java:259)
at javax.swing.plaf.basic.BasicButtonListener.mouseReleased(BasicButtonListener.java:252)
at java.awt.Component.processMouseEvent(Component.java:6505)
at javax.swing.JComponent.processMouseEvent(JComponent.java:3311)
at java.awt.Component.processEvent(Component.java:6270)
at java.awt.Container.processEvent(Container.java:2229)
at java.awt.Component.dispatchEventImpl(Component.java:4861)
at java.awt.Container.dispatchEventImpl(Container.java:2287)
at java.awt.Component.dispatchEvent(Component.java:4687)
at java.awt.LightweightDispatcher.retargetMouseEvent(Container.java:4832)
at java.awt.LightweightDispatcher.processMouseEvent(Container.java:4492)
at java.awt.LightweightDispatcher.dispatchEvent(Container.java:4422)
at java.awt.Container.dispatchEventImpl(Container.java:2273)
at java.awt.Window.dispatchEventImpl(Window.java:2719)
at java.awt.Component.dispatchEvent(Component.java:4687)
at java.awt.EventQueue.dispatchEventImpl(EventQueue.java:735)
at java.awt.EventQueue.access$200(EventQueue.java:103)
at java.awt.EventQueue$3.run(EventQueue.java:694)
at java.awt.EventQueue$3.run(EventQueue.java:692)
at java.security.AccessController.doPrivileged(Native Method)
at java.security.ProtectionDomain$1.doIntersectionPrivilege(ProtectionDomain.java:76)
at java.security.ProtectionDomain$1.doIntersectionPrivilege(ProtectionDomain.java:87)
at java.awt.EventQueue$4.run(EventQueue.java:708)
at java.awt.EventQueue$4.run(EventQueue.java:706)
at java.security.AccessController.doPrivileged(Native Method)
at java.security.ProtectionDomain$1.doIntersectionPrivilege(ProtectionDomain.java:76)
at java.awt.EventQueue.dispatchEvent(EventQueue.java:705)
at java.awt.EventDispatchThread.pumpOneEventForFilters(EventDispatchThread.java:242)
at java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:161)
at java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:150)
at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:146)
at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:138)
at java.awt.EventDispatchThread.run(EventDispatchThread.java:91)
Please help..
thanks in advance..
You have ClassCastException because of your JTable store Integer values which can't be cast to String like next String column1= (String) jTable1.getValueAt(i,0);. Change that to:
String column1= jTable1.getValueAt(i,0) == null ? "" : jTable1.getValueAt(i,0).toString();
You can't cast Integer to String, but you can write
Integer integer = new Integer(4);
String string = integer.toString(); // "4"
Related
This is my populate account method which takes the values from my database columns and stores them within an arraylist of objects of the account class that i made which has fields like username and password.
The second part of the code will show if you scroll down
private ArrayList<account> populateAccount() throws SQLException{
Connection c = DatabaseUtilityClass.createNewConnection();
ArrayList<account> list = new ArrayList();
try{
String q = "Select * from LOGIN";
Statement stmt = (Statement)c.createStatement();
try(ResultSet rs= stmt.executeQuery(q)){
while(rs.next()){
account a = new account();
a.setUsername(rs.getString("USERNAME"));
a.setPassword(rs.getString("PASSWORD"));
list.add(a);
}
}
}
catch(Exception e){
e.printStackTrace();
System.out.println("err");
}
c.close();
return list;
}
This is the second part of my code which should store the arraylist of objects filled with the database info and then take user text and use a for each loop to iterate through each object checking if the username and password values are the same as the one the user entered via a jTextfield and password field. The errors are on the bottom.
private void LoginActionPerformed(java.awt.event.ActionEvent evt) {
try {
accountCheck= populateAccount();
} catch (SQLException ex) {
Logger.getLogger(LoginPage.class.getName()).log(Level.SEVERE, null, ex);
}
String username = user.getText();
String password = pass.getText();
for (account a:accountCheck) {
if(a.getUsername().equals(username) && a.getPassword().equals(password)){
JPanel p = (JPanel)this.getParent();
CardLayout c = (CardLayout)p.getLayout();
c.show(p, PanelConstants.Home);
}
}
}
java.lang.UnsupportedOperationException: Not supported yet.
at boomiautomationapp.account.<init>(account.java:21)
at boomiautomationapp.LoginPage.populateAccount(LoginPage.java:50)
at boomiautomationapp.LoginPage.LoginActionPerformed(LoginPage.java:146)
at boomiautomationapp.LoginPage.access$000(LoginPage.java:28)
at boomiautomationapp.LoginPage$1.actionPerformed(LoginPage.java:94)
at javax.swing.AbstractButton.fireActionPerformed(AbstractButton.java:2018)
at javax.swing.AbstractButton$Handler.actionPerformed(AbstractButton.java:2341)
at javax.swing.DefaultButtonModel.fireActionPerformed(DefaultButtonModel.java:402)
at javax.swing.DefaultButtonModel.setPressed(DefaultButtonModel.java:259)
at javax.swing.plaf.basic.BasicButtonListener.mouseReleased(BasicButtonListener.java:252)
at java.awt.Component.processMouseEvent(Component.java:6516)
at javax.swing.JComponent.processMouseEvent(JComponent.java:3321)
at java.awt.Component.processEvent(Component.java:6281)
at java.awt.Container.processEvent(Container.java:2229)
at java.awt.Component.dispatchEventImpl(Component.java:4872)
at java.awt.Container.dispatchEventImpl(Container.java:2287)
at java.awt.Component.dispatchEvent(Component.java:4698)
at java.awt.LightweightDispatcher.retargetMouseEvent(Container.java:4832)
at java.awt.LightweightDispatcher.processMouseEvent(Container.java:4492)
at java.awt.LightweightDispatcher.dispatchEvent(Container.java:4422)
at java.awt.Container.dispatchEventImpl(Container.java:2273)
at java.awt.Window.dispatchEventImpl(Window.java:2719)
at java.awt.Component.dispatchEvent(Component.java:4698)
at java.awt.EventQueue.dispatchEventImpl(EventQueue.java:747)
at java.awt.EventQueue.access$300(EventQueue.java:103)
at java.awt.EventQueue$3.run(EventQueue.java:706)
at java.awt.EventQueue$3.run(EventQueue.java:704)
at java.security.AccessController.doPrivileged(Native Method)
at java.security.ProtectionDomain$1.doIntersectionPrivilege(ProtectionDomain.java:76)
at java.security.ProtectionDomain$1.doIntersectionPrivilege(ProtectionDomain.java:87)
at java.awt.EventQueue$4.run(EventQueue.java:720)
at java.awt.EventQueue$4.run(EventQueue.java:718)
at java.security.AccessController.doPrivileged(Native Method)
at java.security.ProtectionDomain$1.doIntersectionPrivilege(ProtectionDomain.java:76)
at java.awt.EventQueue.dispatchEvent(EventQueue.java:717)
at java.awt.EventDispatchThread.pumpOneEventForFilters(EventDispatchThread.java:242)
at java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:161)
at java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:150)
at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:146)
at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:138)
at java.awt.EventDispatchThread.run(EventDispatchThread.java:91)
All I want it search the related names and set value on jtextfeild, like we got in google. (Give name suggestions that you have in database). Here is the code I used but it gets syntax error. Of course it should get it. Because code is wrong.
private void txtLnameKeyReleased(java.awt.event.KeyEvent evt)
{
try {
ResultSet rs = JDBC.getData("select lot_name from lot where lot_type='" + company.getSelectedItem().toString() + "' and lot_name like '"+txtLname.getText()+"'% ");
if (rs.first()) {
txtLname.setText(rs.getString("lot_name"));
}
} catch (Exception e) {
e.printStackTrace();
}
}
I really don't know how to set up % with text field's gettext() method. Please help me. Thank you.
Added error
com.mysql.jdbc.exceptions.jdbc4.MySQLSyntaxErrorException: You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near '%' at line 1
at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:57)
at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
at java.lang.reflect.Constructor.newInstance(Constructor.java:525)
at com.mysql.jdbc.Util.handleNewInstance(Util.java:411)
at com.mysql.jdbc.Util.getInstance(Util.java:386)
at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:1052)
at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:3597)
at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:3529)
at com.mysql.jdbc.MysqlIO.sendCommand(MysqlIO.java:1990)
at com.mysql.jdbc.MysqlIO.sqlQueryDirect(MysqlIO.java:2151)
at com.mysql.jdbc.ConnectionImpl.execSQL(ConnectionImpl.java:2619)
at com.mysql.jdbc.ConnectionImpl.execSQL(ConnectionImpl.java:2569)
at com.mysql.jdbc.StatementImpl.executeQuery(StatementImpl.java:1521)
at Modle.JDBC.getData(JDBC.java:46)
at lottery.LottryRegistration.txtLnameKeyReleased(LottryRegistration.java:736)
at lottery.LottryRegistration.access$1800(LottryRegistration.java:22)
at lottery.LottryRegistration$16.keyReleased(LottryRegistration.java:298)
at java.awt.Component.processKeyEvent(Component.java:6466)
at javax.swing.JComponent.processKeyEvent(JComponent.java:2829)
at java.awt.Component.processEvent(Component.java:6282)
at java.awt.Container.processEvent(Container.java:2229)
at java.awt.Component.dispatchEventImpl(Component.java:4861)
at java.awt.Container.dispatchEventImpl(Container.java:2287)
at java.awt.Component.dispatchEvent(Component.java:4687)
at java.awt.KeyboardFocusManager.redispatchEvent(KeyboardFocusManager.java:1895)
at java.awt.DefaultKeyboardFocusManager.dispatchKeyEvent(DefaultKeyboardFocusManager.java:762)
at java.awt.DefaultKeyboardFocusManager.preDispatchKeyEvent(DefaultKeyboardFocusManager.java:1027)
at java.awt.DefaultKeyboardFocusManager.typeAheadAssertions(DefaultKeyboardFocusManager.java:899)
at java.awt.DefaultKeyboardFocusManager.dispatchEvent(DefaultKeyboardFocusManager.java:727)
at java.awt.Component.dispatchEventImpl(Component.java:4731)
at java.awt.Container.dispatchEventImpl(Container.java:2287)
at java.awt.Window.dispatchEventImpl(Window.java:2719)
at java.awt.Component.dispatchEvent(Component.java:4687)
at java.awt.EventQueue.dispatchEventImpl(EventQueue.java:729)
at java.awt.EventQueue.access$200(EventQueue.java:103)
at java.awt.EventQueue$3.run(EventQueue.java:688)
at java.awt.EventQueue$3.run(EventQueue.java:686)
at java.security.AccessController.doPrivileged(Native Method)
at java.security.ProtectionDomain$1.doIntersectionPrivilege(ProtectionDomain.java:76)
at java.security.ProtectionDomain$1.doIntersectionPrivilege(ProtectionDomain.java:87)
at java.awt.EventQueue$4.run(EventQueue.java:702)
at java.awt.EventQueue$4.run(EventQueue.java:700)
at java.security.AccessController.doPrivileged(Native Method)
at java.security.ProtectionDomain$1.doIntersectionPrivilege(ProtectionDomain.java:76)
at java.awt.EventQueue.dispatchEvent(EventQueue.java:699)
at java.awt.EventDispatchThread.pumpOneEventForFilters(EventDispatchThread.java:242)
at java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:161)
at java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:150)
at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:146)
at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:138)
at java.awt.EventDispatchThread.run(EventDispatchThread.java:91)
Percent on the wrong side of comment sign:
ResultSet rs = JDBC.getData("select lot_name from lot where lot_type='"
+ company.getSelectedItem().toString()
+ "' and lot_name like '"
+ txtLname.getText()
+ "%' ");
I am using Netbeans IDE to develop a desktop Java App. I have an embedded Derby database which has a few tables. All of the tables are in the APP schema. The problem I am having is that a query I am making to the DB is coming back with the above exception. I know the table exists and if I run the exact same SQL query from inside the editor it functions as expected. I am looking for help with the problem but more so looking for help as to how you would troubleshoot a problem like this. I have attached some code and the stack trace. Please don't hesitate to ask for more info if it will help
public static void doKeywordListDisplayLogic() {
try {
SimpleQuery keywordIdQuery = new SimpleQuery();
keywordIdQuery.setSelectExpressionList("*");
keywordIdQuery.setDataSource("KEYWORD_LOOKUP");
keywordIdQuery.setWherePredicates("SDS_NUMBER");
keywordIdQuery.setComparisonOperator("=");
keywordIdQuery.setQueryPredicate(selectedSdsNumber);//selectedSdsNumber comes from a previous query and table row selection.
keywordIdQuery.simpleQuery();
String keyId = rs.getString("KEY_ID");
System.out.println(keyId);
} catch (Exception e) {
e.printStackTrace();
}
}
public void simpleQuery() {
try {
conn = DbCommunication.JavaConnect.ConnectDb();
String dbQuery = "SELECT ".concat(selectExpressionList).concat(" FROM ").concat(dataSource).concat(" WHERE ").concat(wherePredicates).concat(" ").concat(comparisonOperator).concat(" ").concat(queryPredicate);
System.out.println(dbQuery);
PreparedStatement pst = conn.prepareStatement(dbQuery);
rs = pst.executeQuery();
} catch (Exception e) {
e.printStackTrace(System.out);
JOptionPane.showMessageDialog(null, e);
}
}
***THE SELECT SQL QUERY BELOW IS THE FINAL STRING SUBMITTED TO THE DB***
SELECT * FROM LOCATION_LOOKUP WHERE SDS_NUMBER = 998
java.sql.SQLException: There is no column named: KEY_ID.
at org.apache.derby.client.am.SQLExceptionFactory40.getSQLException(Unknown Source)
at org.apache.derby.client.am.SqlException.getSQLException(Unknown Source)
at org.apache.derby.client.am.ResultSet.getString(Unknown Source)
at RecordHandling.PopulateRecord.doKeywordListDisplayLogic(PopulateRecord.java:264)
at RecordHandling.PopulateRecord.doRowRetrieval(PopulateRecord.java:202)
at Gui.mainFrame.jButton7ActionPerformed(mainFrame.java:717)
at Gui.mainFrame.access$400(mainFrame.java:25)
at Gui.mainFrame$5.actionPerformed(mainFrame.java:232)
at javax.swing.AbstractButton.fireActionPerformed(AbstractButton.java:2018)
at javax.swing.AbstractButton$Handler.actionPerformed(AbstractButton.java:2341)
at javax.swing.DefaultButtonModel.fireActionPerformed(DefaultButtonModel.java:402)
at javax.swing.DefaultButtonModel.setPressed(DefaultButtonModel.java:259)
at javax.swing.plaf.basic.BasicButtonListener.mouseReleased(BasicButtonListener.java:252)
at java.awt.Component.processMouseEvent(Component.java:6505)
at javax.swing.JComponent.processMouseEvent(JComponent.java:3320)
at java.awt.Component.processEvent(Component.java:6270)
at java.awt.Container.processEvent(Container.java:2229)
at java.awt.Component.dispatchEventImpl(Component.java:4861)
at java.awt.Container.dispatchEventImpl(Container.java:2287)
at java.awt.Component.dispatchEvent(Component.java:4687)
at java.awt.LightweightDispatcher.retargetMouseEvent(Container.java:4832)
at java.awt.LightweightDispatcher.processMouseEvent(Container.java:4492)
at java.awt.LightweightDispatcher.dispatchEvent(Container.java:4422)
at java.awt.Container.dispatchEventImpl(Container.java:2273)
at java.awt.Window.dispatchEventImpl(Window.java:2719)
at java.awt.Component.dispatchEvent(Component.java:4687)
at java.awt.EventQueue.dispatchEventImpl(EventQueue.java:735)
at java.awt.EventQueue.access$200(EventQueue.java:103)
at java.awt.EventQueue$3.run(EventQueue.java:694)
at java.awt.EventQueue$3.run(EventQueue.java:692)
at java.security.AccessController.doPrivileged(Native Method)
at java.security.ProtectionDomain$1.doIntersectionPrivilege(ProtectionDomain.java:76)
at java.security.ProtectionDomain$1.doIntersectionPrivilege(ProtectionDomain.java:87)
at java.awt.EventQueue$4.run(EventQueue.java:708)
at java.awt.EventQueue$4.run(EventQueue.java:706)
at java.security.AccessController.doPrivileged(Native Method)
at java.security.ProtectionDomain$1.doIntersectionPrivilege(ProtectionDomain.java:76)
at java.awt.EventQueue.dispatchEvent(EventQueue.java:705)
at java.awt.EventDispatchThread.pumpOneEventForFilters(EventDispatchThread.java:242)
at java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:161)
at java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:150)
at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:146)
at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:138)
at java.awt.EventDispatchThread.run(EventDispatchThread.java:91)
Caused by: org.apache.derby.client.am.SqlException: There is no column named: KEY_ID.
at org.apache.derby.client.am.ColumnMetaData.findColumnX(Unknown Source)
at org.apache.derby.client.am.ResultSet.findColumnX(Unknown Source)
... 42 more
There is no column named: KEY_ID
Instead of retrieving using column name,
String keyId = rs.getString("KEY_ID");
try retrieve using index:
String keyId = rs.getString(indexOfKeyId);//if key_id is at column 2 in table, then rs.getString(2)
To troubleshoot, display all value from rs, and see if your desired output(key id) is there.
I'm trying to edit a sql table using a java program. However, i get the following exception(includes stacktrace). The exception is a verystrange one, never encountered it before.
com.mysql.jdbc.exceptions.MySQLSyntaxErrorException: You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near '[,20,375,298x28,layout=javax.swing.plaf.basic.BasicTextUI$UpdateHandler,alignmen' at line 1
at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:936)
at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:2985)
at com.mysql.jdbc.MysqlIO.sendCommand(MysqlIO.java:1631)
at com.mysql.jdbc.MysqlIO.sqlQueryDirect(MysqlIO.java:1723)
at com.mysql.jdbc.Connection.execSQL(Connection.java:3283)
at com.mysql.jdbc.PreparedStatement.executeInternal(PreparedStatement.java:1332)
at com.mysql.jdbc.PreparedStatement.executeUpdate(PreparedStatement.java:1604)
at com.mysql.jdbc.PreparedStatement.executeUpdate(PreparedStatement.java:1519)
at com.mysql.jdbc.PreparedStatement.executeUpdate(PreparedStatement.java:1504)
at transaction.EditClientTrans.clEditTrActionPerformed(EditClientTrans.java:259)
at transaction.EditClientTrans.access$300(EditClientTrans.java:23)
at transaction.EditClientTrans$4.actionPerformed(EditClientTrans.java:121)
at javax.swing.AbstractButton.fireActionPerformed(AbstractButton.java:2018)
at javax.swing.AbstractButton$Handler.actionPerformed(AbstractButton.java:2341)
at javax.swing.DefaultButtonModel.fireActionPerformed(DefaultButtonModel.java:402)
at javax.swing.DefaultButtonModel.setPressed(DefaultButtonModel.java:259)
at javax.swing.plaf.basic.BasicButtonListener.mouseReleased(BasicButtonListener.java:252)
at java.awt.Component.processMouseEvent(Component.java:6505)
at javax.swing.JComponent.processMouseEvent(JComponent.java:3321)
at java.awt.Component.processEvent(Component.java:6270)
at java.awt.Container.processEvent(Container.java:2229)
at java.awt.Component.dispatchEventImpl(Component.java:4861)
at java.awt.Container.dispatchEventImpl(Container.java:2287)
at java.awt.Component.dispatchEvent(Component.java:4687)
at java.awt.LightweightDispatcher.retargetMouseEvent(Container.java:4832)
at java.awt.LightweightDispatcher.processMouseEvent(Container.java:4492)
at java.awt.LightweightDispatcher.dispatchEvent(Container.java:4422)
at java.awt.Container.dispatchEventImpl(Container.java:2273)
at java.awt.Window.dispatchEventImpl(Window.java:2719)
at java.awt.Component.dispatchEvent(Component.java:4687)
at java.awt.EventQueue.dispatchEventImpl(EventQueue.java:735)
at java.awt.EventQueue.access$200(EventQueue.java:103)
at java.awt.EventQueue$3.run(EventQueue.java:694)
at java.awt.EventQueue$3.run(EventQueue.java:692)
at java.security.AccessController.doPrivileged(Native Method)
at java.security.ProtectionDomain$1.doIntersectionPrivilege(ProtectionDomain.java:76)
at java.security.ProtectionDomain$1.doIntersectionPrivilege(ProtectionDomain.java:87)
at java.awt.EventQueue$4.run(EventQueue.java:708)
at java.awt.EventQueue$4.run(EventQueue.java:706)
at java.security.AccessController.doPrivileged(Native Method)
at java.security.ProtectionDomain$1.doIntersectionPrivilege(ProtectionDomain.java:76)
at java.awt.EventQueue.dispatchEvent(EventQueue.java:705)
at java.awt.EventDispatchThread.pumpOneEventForFilters(EventDispatchThread.java:242)
at java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:161)
at java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:154)
at java.awt.WaitDispatchSupport$2.run(WaitDispatchSupport.java:182)
at java.awt.WaitDispatchSupport$4.run(WaitDispatchSupport.java:221)
at java.security.AccessController.doPrivileged(Native Method)
at java.awt.WaitDispatchSupport.enter(WaitDispatchSupport.java:219)
at java.awt.Dialog.show(Dialog.java:1082)
at java.awt.Component.show(Component.java:1651)
at java.awt.Component.setVisible(Component.java:1603)
at java.awt.Window.setVisible(Window.java:1014)
at java.awt.Dialog.setVisible(Dialog.java:1005)
at transaction.EditClientTrans$5.run(EditClientTrans.java:310)
at java.awt.event.InvocationEvent.dispatch(InvocationEvent.java:251)
at java.awt.EventQueue.dispatchEventImpl(EventQueue.java:733)
at java.awt.EventQueue.access$200(EventQueue.java:103)
at java.awt.EventQueue$3.run(EventQueue.java:694)
at java.awt.EventQueue$3.run(EventQueue.java:692)
at java.security.AccessController.doPrivileged(Native Method)
at java.security.ProtectionDomain$1.doIntersectionPrivilege(ProtectionDomain.java:76)
at java.awt.EventQueue.dispatchEvent(EventQueue.java:703)
at java.awt.EventDispatchThread.pumpOneEventForFilters(EventDispatchThread.java:242)
at java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:161)
at java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:150)
at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:146)
at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:138)
at java.awt.EventDispatchThread.run(EventDispatchThread.java:91)
Here is the code:
private void clEditTrActionPerformed(java.awt.event.ActionEvent evt) {
try {
long bal = amtnum - downp;
payoption = (String) payOpt.getSelectedItem();
if(bal==0)
pstat = "Fully Paid";
else if((bal>0)&&(bal<amtnum))
pstat = "Partially Paid";
else if(bal==amtnum)
pstat = "Unpaid";
String sql = "update kusinanikambal.ctrans "
+ "set clname = '"+cliName.getText()
+"', contdet = '"+cliCNo.getText()
+"', date = '"+Date.getText()
+"', amt = "+amtnum
+", paidamt= "+down
+", bal = "+bal
+", paymethod = '"+payoption+"'"
+", paystat = '"+pstat+"'"
+ "where transno = "+ transNo.getText();
PreparedStatement pst = conn.prepareStatement(sql);
int rs = pst.executeUpdate();
JOptionPane.showMessageDialog(null,"Edit Successful");
super.setVisible(false);
} catch (SQLException ex) {
JOptionPane.showMessageDialog(null,ex);
ex.printStackTrace();
}
}
You've appended an Object (in this, some kind of component) as part of your query, which has used the object's toString method as the result. Can't tell which one as you've not provided that much information.
You should also consider using PreparedStatements instead of appending the query String together...
public void displayPhoto() {
rs = null;
String displaySQL = "select * from images where USERNAME ='" + temp.getUsername() + "'";
try {
con = getDBConnection();
rs = st.executeQuery(displaySQL);
while (rs.next()) {
BufferedImage im = ImageIO.read(rs.getBinaryStream("IMAGES"));
displayPhoto.setIcon(new ImageIcon(im));
}
} catch (Exception e) {
e.printStackTrace();
}
}
I'm trying to display the image from database, the image stored as longblob. it says NULLPOINTERS, I dunno what's the problem
the table has 2 columns(USERNAME,IMAGES)
images = table name,
IMAGES = Column name,
displayPhoto = JLabel
can anyone help me?
thanks in advance<3
Here is the full error message
java.lang.NullPointerException
at javax.swing.ImageIcon.<init>(ImageIcon.java:228)
at MyProfile.displayPhoto(MyProfile.java:395)
at MyProfile.<init>(MyProfile.java:195)
at Login.actionPerformed(Login.java:93)
at javax.swing.AbstractButton.fireActionPerformed(AbstractButton.java:2018)
at javax.swing.AbstractButton$Handler.actionPerformed(AbstractButton.java:2341)
at javax.swing.DefaultButtonModel.fireActionPerformed(DefaultButtonModel.java:402)
at javax.swing.DefaultButtonModel.setPressed(DefaultButtonModel.java:259)
at javax.swing.plaf.basic.BasicButtonListener.mouseReleased(BasicButtonListener.java:252)
at java.awt.Component.processMouseEvent(Component.java:6505)
at javax.swing.JComponent.processMouseEvent(JComponent.java:3321)
at java.awt.Component.processEvent(Component.java:6270)
at java.awt.Container.processEvent(Container.java:2229)
at java.awt.Component.dispatchEventImpl(Component.java:4861)
at java.awt.Container.dispatchEventImpl(Container.java:2287)
at java.awt.Component.dispatchEvent(Component.java:4687)
at java.awt.LightweightDispatcher.retargetMouseEvent(Container.java:4832)
at java.awt.LightweightDispatcher.processMouseEvent(Container.java:4492)
at java.awt.LightweightDispatcher.dispatchEvent(Container.java:4422)
at java.awt.Container.dispatchEventImpl(Container.java:2273)
at java.awt.Window.dispatchEventImpl(Window.java:2719)
at java.awt.Component.dispatchEvent(Component.java:4687)
at java.awt.EventQueue.dispatchEventImpl(EventQueue.java:729)
at java.awt.EventQueue.access$200(EventQueue.java:103)
at java.awt.EventQueue$3.run(EventQueue.java:688)
at java.awt.EventQueue$3.run(EventQueue.java:686)
at java.security.AccessController.doPrivileged(Native Method)
at java.security.ProtectionDomain$1.doIntersectionPrivilege(ProtectionDomain.java:76)
at java.security.ProtectionDomain$1.doIntersectionPrivilege(ProtectionDomain.java:87)
at java.awt.EventQueue$4.run(EventQueue.java:702)
at java.awt.EventQueue$4.run(EventQueue.java:700)
at java.security.AccessController.doPrivileged(Native Method)
at java.security.ProtectionDomain$1.doIntersectionPrivilege(ProtectionDomain.java:76)
at java.awt.EventQueue.dispatchEvent(EventQueue.java:699)
at java.awt.EventDispatchThread.pumpOneEventForFilters(EventDispatchThread.java:242)
at java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:161)
at java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:150)
at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:146)
at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:138)
at java.awt.EventDispatchThread.run(EventDispatchThread.java:91)
try {
con = DriverManager.getConnection("jdbc:mysql://localhost:3306/login", "root", "obierofelix");
stmt = con.createStatement();
rs = stmt.executeQuery("select * from images");
rs.next();
BufferedImage im = ImageIO.read(rs.getBinaryStream("Image"));
BackGroundImage.setIcon(new ImageIcon(im));
} catch (Exception err) {
JOptionPane.showMessageDialog(this, err.getMessage());
}
Apply rs.next(); before the try and catch block to move the pointer to the first record in the database.