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Update records from access database selected row java swing

How To Fix error? I am trying Update the Jtable row data and microsoft access database but it occurred issue.
It Update all rows from the access table instead selected row.
can anyone fix the error? or show me code for it?
**My code is**
DefaultTableModel dtm = (DefaultTableModel) jTable1.getModel();
String id, fname, lname;
connection = ConnectionDb.getConnection();
try{
String value1=txtFname.getText();
String value2=txtLname.getText();
PreparedStatement preparedStatement=connection.prepareStatement("Update Student SET FirstName = '"+value1+"' , LastName ='"+value2+"' where ID = +id");
preparedStatement.execute();
int i = jTable1.getSelectedRow();
if(i >= 0)
{
jTable1.setValueAt(txtFname.getText(), i, 0);
jTable1.setValueAt(txtLname.getText(), i, 1);
}else
{
JOptionPane.showMessageDialog(null, "Error");
}
connection.commit();
}catch(Exception e){
e.printStackTrace();
}
}

There are a few issues in your code:
First: You are not specifying an Id in the Where clause properly. So the update is updating everything.
// Your "Where" means basically "Where 1 = 1"
PreparedStatement preparedStatement=connection.prepareStatement("Update Student SET FirstName = '"+value1+"' , LastName ='"+value2+"' where ID = +id");
Second: It's better to use parameters instead of simply concatenating your variables. Here is how you could do it:
DefaultTableModel dtm = (DefaultTableModel) jTable1.getModel();
String id, fname, lname;
connection = ConnectionDb.getConnection();
try{
String value1=txtFname.getText();
String value2=txtLname.getText();
PreparedStatement preparedStatement = connection.prepareStatement("Update Student SET FirstName = ? , LastName = ? where ID = ?");
preparedStatement.setString(1, value1);
preparedStatement.setString(2, value2);
preparedStatement.setString(3, id);
preparedStatement.execute();
// Code continues..
....
Third: Where is your ID value? You created the variable in the second line but you didn't set any value there. You need to retrieve the value and use it in order to update your Student data.

Update one column from table and insert new rows. sqlite, java

I have some problems to modify data from a table.
I need to update an entire column from a specific table and if there's no sufficient rows I need to insert more.
More exactly, the user will be able to modify data from interface, in a text area that contains current data from db.
I put all the text in a list, each line representing an element of the list.
In a certain column, I must go through each row and modify it with a list item. If there are more lines in the text area than number of rows in that table, I need to insert new ones, which will contain the remaining items from the list.
I would be grateful if someone could give me some help.
Thanks!
#FXML
public void modify() throws SQLException {
String col= selectNorme.getValue().toString();
String text=texta.getText();
List<String> l1notes= new ArrayList<>( Arrays.asList( text.split("\r\n|\r|\n") ));
Statement stmt=null;
String client = this.clientCombobox.getValue().toString();
String tab1Client= client+ "_" +this.selectLang1.getValue().toString();
String query="SELECT * FROM "+tab1Client+" WHERE ["+ selectNorme.getValue().toString()+ "]= "+col+"";
String sqlUpdate1= "UPDATE ["+tab1Client+"] SET ["+ this.selectNorme.getValue().toString() +"] = ?";
try {
Connection conn = dbConnection.getConnection();
PreparedStatement modif=conn.prepareStatement(sqlUpdate1);
int i=0;
if (rss.next()) {
stmt = conn.createStatement();
rss = stmt.executeQuery(query);
stmt.executeUpdate(sqlUpdate1);
modif.setString(1, l1notes.get(i));
i++;
modif.execute();
}
else {
PreparedStatement pstmt = conn.prepareStatement("INSERT INTO ["+this.clientCombobox.getValue().toString()+"_"+this.selectLang1.getValue().toString()+"] (["+ this.selectNorme.getValue().toString() +"]) values (?)" );
for (int row=i; row< l1notes.size(); row++)
{
pstmt.setString(1, l1notes.get(row));
pstmt.executeUpdate();
}
}
}
finally {
try {
if (conn !=null)
conn.close();
}
catch (SQLException se){
se.printStackTrace();
}
}
}

Show results on Jtable between dates when selected Jdatechooser (Mysql)

This is the query for the (between dates). But when I select the dates and click OK all records on JTable disappears. Help me to build the query and statement for the get record between dates on JTable.
Jtable with records
private void jButton3ActionPerformed(java.awt.event.ActionEvent evt) {
// TODO add your handling code here
// java.util.Date val1 = jDateChooser1.getDate();
// java.util.Date val2 = jDateChooser2.getDate();
java.sql.Date val1 = new java.sql.Date(jDateChooser1.getDate().getTime());
java.sql.Date val2 = new java.sql.Date(jDateChooser2.getDate().getTime());
try {
String sql = "select * from Umar where Date between ? and ? ";
pst = conn.prepareStatement(sql);
pst.setDate(1, val1);
pst.setDate(2, val2);
rs = pst.executeQuery();
jTable1.setModel(DbUtils.resultSetToTableModel(rs));
} catch (Exception e) {
JOptionPane.showMessageDialog(null,e);
}
}

Once again we know nothing about your database. It is up to you to know how the data is displayed in the database.
Here is a simple query to get you started.
String sql = "Select * from Umar";
PreparedStatement ps = connection.prepareStatement();
ResultSet rs = ps.executeQuery( sql );
ResultSetMetaData md = rs.getMetaData();
int columns = md.getColumnCount();
// Get column names
for (int i = 1; i <= columns; i++)
{
System.out.println( md.getColumnLabel(i) );
}
// Get row data
while (rs.next())
{
for (int i = 1; i <= columns; i++)
{
Object data = rs.getObject(I);
System.out.println(data + " : " + data.getClass());
}
}
rs.close();
stmt.close();
This has absolutely nothing to do with your JTable. It is just a query of the database. So get this query working. Determine how the date is stored in your database. Is it a String or a Date?
Then next you change the query:
String sql = "Select * from Umar where Date between ? and ? ";
...
ps.setDate/String(1, ...);
ps.setDate/String(2, ...);
Then you test this with a hard coded data to make sure you get data. Then once this step is working you fix your program that loads the data into the JTable.

Updating database from a dynamic jtable

I am trying to update a database from a dynamic JTable. Here is my code
try {
//open connection...
conn = javaConnect.ConnectDb();
//select the qualifications table row for the selected staffID
String sql2 = "select * from QualificationsTable where qualID =" + theRowID;
pStmt = conn.prepareStatement(sql2);
ResultSet rs2 = pStmt.executeQuery();
//check if QualificationsTable has content on that row...
if (rs2.next()) {
//it has content update...
//get the model for the qual table...
DefaultTableModel tModel = (DefaultTableModel) qualTable.getModel();
for (int i = 0; i < tModel.getRowCount(); i++) {
//get inputs from the tables
String qualification = tModel.getValueAt(i, 0).toString();
String yearAttained = tModel.getValueAt(i, 1).toString();
//sql query for updating qualifications table...
String sql3 = "update QualificationsTable set qualifications = ?, yearAttained = ? where qualID = ?";
pStmt = conn.prepareStatement(sql3);
//set the pareameters...
pStmt.setString(1, qualification);
pStmt.setString(2, yearAttained);
pStmt.setInt(3, theRowID);
//execute the prepared statement...
pStmt.execute();
// dbStatement.executeUpdate("INSERT INTO tableName VALUES('"+item+"','"+quant+"','"+unit+"','"+tot+"')");
}
//close connection
conn.close();
JOptionPane.showMessageDialog(null, "Qualifications updated successfully!", "Success", INFORMATION_MESSAGE);
} else {
//it doesnt have content insert...
//get the model for the qual table...
DefaultTableModel tModel = (DefaultTableModel) qualTable.getModel();
for (int i = 0; i < tModel.getRowCount(); i++) {
//System.out.println(tModel.getSelectedColumn()+tModel.getSelectedRow());
//get inputs from the tables
String qualification = tModel.getValueAt(i, 0).toString();
String yearAttained = tModel.getValueAt(i, 1).toString();
//sql query for storing into QualificationsTable
String sql3 = "insert into QualificationsTable (qualifications,yearAttained,qualID) "
+ "values (?,?,?)";
pStmt = conn.prepareStatement(sql3);
//set the parameters...
pStmt.setString(1, qualification);
pStmt.setString(2, yearAttained);
pStmt.setInt(3, theRowID);
//execute the prepared statement...
pStmt.execute();
}
//close connection
conn.close();
JOptionPane.showMessageDialog(null, "Qualifications saved successfully!", "Success", INFORMATION_MESSAGE);
}
} catch (SQLException ex) {
Logger.getLogger(StoreInfo.class.getName()).log(Level.SEVERE, null, ex);
} catch(NullPointerException nfe){
JOptionPane.showMessageDialog(infoParentTab, "Please, always hit the Enter button to effect your changes on the table", "USER ERROR!", ERROR_MESSAGE);
}
} else {
JOptionPane.showMessageDialog(infoParentTab, "You must select a Staff from the Browser...", "USER ERROR!", ERROR_MESSAGE);
}
} catch (SQLException e) {
JOptionPane.showMessageDialog(null, e);
e.printStackTrace();
}
what i am actually trying to do is to use a table linked to a database to store qualifications of staff in a company. now each entry in the qualifications database is referenced to the staffID in the staffs database through qualID.
so when i store the qualification on the table, it also records the staff that has the qualification. this should enable me retrieve a particular staff's qualifications from the database when need.
the segment for inserting into the database if empty works fine (i.e. the else... segment). but the update segment (i.e. the if... segment) is faulty in the sense that the code uses the last row on the JTable to populate all the rows in the database table instead of replicating all the new changes into the database table when update is need.
i have tried everything i could to no avail. please i need much help in this...time is not on my side. tnx guys in advance

The best way to do this is to use a CachedRowSet to back up the JTable's model. You'll be able to view, insert and update data easily.
Here's the tutorial: Using JDBC with GUI API

Using PreparedStatement to sort records in MySQL

Im trying to write a code in which when a user will click an a "Sort by Name" button, my program will sort the records of my Database and put them in a JTable,combining 2 DB Tables with INNER JOIN. I have managed to do this by using a resultSet and selecting for example Ascending Order. But because I dont want to have 2 buttons, one for the ASC and one for the DESC, I thought of using preparedStatement and an showInputDialog in which the user will select if he wants to have an ASC or a DESC ordering and execute the order. Also, I remembered that some programs I've seen used a feature in which the first time you clicked the button it sorted DESC and if you pressed it again would order by ASC(havent managed to find in on the WEB).About my first thought, I tried to do it but I could get past this one
ResultSetMetaData mdsort = rssort.getMetaData();
I should have an ResultSet variable(rssort) to use getMetaData() but if I selected to make the program with my PreparedStatement i would get an error there. Any suggestions??
try{
Connection conn = DriverManager.getConnection("jdbc:mysql://localhost/test1?user=me&password=12345");
Statement stmtsort = conn.createStatement();
ResultSet rssort = stmtsort.executeQuery("SELECT * FROM consoles INNER JOIN hardware ON consoles.id=hardware.id ORDER BY consoles.name ASC");
// ERROR HERE!!! needs resultset,not preparedStatement
ResultSetMetaData mdsort = rssort.getMetaData();
columnCount = mdsort.getColumnCount();
String[] colssort = new String[columnCount];
for (i=1;i<= columnCount;i++)
{
colssort[i-1] = mdsort.getColumnName(i);
}
DefaultTableModel model = new DefaultTableModel(colssort,0);
while (rssort.next())
{
Object[] rowsort = new Object[columnCount];
for (i = 1 ; i <= columnCount ; i++)
{
rowsort[i-1] = rssort.getObject(i);
}
model.addRow(rowsort);
}
JTable table = new JTable(model);
model.fireTableDataChanged();
table.setCellSelectionEnabled(true);
table.setColumnSelectionAllowed(true);
table.setFillsViewportHeight(true);
table.setSurrendersFocusOnKeystroke(true);
table.setBounds(218,59,529,360);
frame.getContentPane().add(table);
model.fireTableDataChanged();
conn.close();
stmtsort.close();
rssort.close();
} catch (SQLException case1)
{case1.printStackTrace();
} catch (Exception case2)
{case2.printStackTrace();}
}
});
UPDATE
OK I managed to fix this issue with the getMetaData() but now the thing is that I dont use any ResultSet variables/instances and cant use next() method to create my DB.
String name = "SELECT * FROM consoles INNER JOIN hardware ON consoles.id=hardware.id ORDER BY consoles.name ?";
PreparedStatement psname = conn.prepareStatement(name);
String strin = JOptionPane.showInputDialog(null,"ASC or DESC order ? : ");
psname.setString(1,strin);
psname.executeUpdate();
ResultSetMetaData mdsort = psname.getMetaData();
int columnCount = mdsort.getColumnCount();
.
.
.
// error coming up here,because i deleted the ResultSet
while (psname.next())
.
.
.

Better make a bit more complex TableModel.
That is more optimal.
Keep the data from the ResultSet in an original TableModel.
Use a wrapping TableModel to sort, and maybe filter.
Use the ResultSetMetaData for the column type, if it is Number (Integer, BigDecimal, ...) then use that type instead of Object for the column type: gives a right aligned column.
Maybe first do an internet search for ResultSetTableModel; other peoply must have done it already.

try{
conn = DriverManager.getConnection("jdbc:mysql://localhost/test1?user=me&password=12345");
String strin = JOptionPane.showInputDialog(null,"ASC or DESC order ? : ");
stmtsortname = conn.createStatement();
rssortname = stmtsortname.executeQuery("SELECT * FROM consoles INNER JOIN hardware ON consoles.id=hardware.id ORDER BY consoles.name "+strin);
mdsortname = rssortname.getMetaData();
columnCount = mdsortname.getColumnCount();
String[] colssortname = new String[columnCount];
for (i=1;i<= columnCount;i++)
{
colssortname[i-1] = mdsortname.getColumnName(i);
}
model = new DefaultTableModel(colssortname,0);
while (rssortname.next())
{
Object[] rowsortname = new Object[columnCount];
for (i = 1 ; i <= columnCount ; i++)
{
rowsortname[i-1] = rssortname.getObject(i);
}
model.addRow(rowsortname);
}
table = new JTable(model);
model.fireTableDataChanged();
table.setCellSelectionEnabled(true);
table.setColumnSelectionAllowed(true)
table.setFillsViewportHeight(true);
table.setSurrendersFocusOnKeystroke(true);
table.setBounds(146,59,763,360);
frame.getContentPane().add(table);
model.fireTableDataChanged();
conn.close();
stmtsortname.close();
rssortname.close();
} catch (SQLException case1)
{
case1.printStackTrace();
}
catch (Exception case2)
{
case2.printStackTrace();
}
}
});