Re: Help: Java database manipulation using NetBeans

tobleron <>
Tue, 23 Sep 2008 05:25:23 -0700 (PDT)
On Sep 23, 1:08 am, "John B. Matthews" <nos...@nospam.invalid> wrote:

In article

 tobleron <> wrote:

I fix[ed] the classpath, and it seems [to be] OK for the DB


But when the data [is] sent to the DB, [NetBeans] respond[s] with this
error message:

com.mysql.jdbc.MysqlDataTruncation: Data truncation: Data too long for
column 'terminalid' at row 1

The "terminalid" was varchar(10), and the data to be written [is]
"ECG-2", which is less than 10 character. Why [does it show the] error
message "data too long"?

Either terminalid isn't varchar(10) or the inserted string is longer
than you think. I can reproduce your error with the following table:

mysql> show columns from tobleron;
| Field | Type | Null | Key | Default | Extra |
| terminalid | varchar(10) | YES | | NULL | =



and the following SQL statement:

"insert into tobleron(terminalid) values ('ECG-2.12345')"

com.mysql.jdbc.MysqlDataTruncation: Data truncation: Data too long for
column 'terminalid' at row 1

Of course, it works correctly for the value 'ECG-2'. If this isn't
helpful, we need to see your table definition and SQl statement.

John B. Matthews
trashgod at gmail dot com
home dot woh dot rr dot com slash jbmatthews

Thank you for correcting my poor english :)

Yes, it works if I used "Execute commands..." menu in the "services"
window. But if I used script in my code, it doesn't work. It still
shows "com.mysql.jdbc.MysqlDataTruncation: Data truncation: Data too
long for column 'terminalid' at row 1" even i just used "ECG-2" for
the terminalid's data. In other side, there is a set of data already
fits the row 1. The next data should be occupies row 2, right ? But
still showed "Data too long for column 'terminalid' at row 1" even it
is already occupied. Here is my code :

package ecgterminal;

import org.jdesktop.application.Action;
import java.sql.*;

public class ECGTerminalSetup extends javax.swing.JDialog {

    public ECGTerminalSetup(java.awt.Frame parent) {

    @Action public void closeAboutBox() {

@Action public void setup() {
    String url = "jdbc:mysql://localhost:3306/dicom";
    Connection con;
    Statement stmt;

    try {
    } catch(java.lang.ClassNotFoundException e) {

    try {
      con = DriverManager.getConnection(url, "dicom", "");
      stmt = con.createStatement();
      String sql = "INSERT INTO ecgterminal
(terminalid,terminalname,insname,insaddr1,insaddr2) VALUES ('"+
terminalIdTxt +"','"+ terminalNameTxt +"','"+ insNameTxt +"','"+
insAddr1Txt +"','"+ insAddr2Txt +"')";
      /*while ( {
        String s1 = rs.getString(1);
        String s2 = rs.getString(2);
        System.out.println(s1 + "@" + s2);


    } catch(SQLException e) {

    private javax.swing.JButton closeButton;
    private javax.swing.JTextField insAddr1Txt;
    private javax.swing.JTextField insAddr2Txt;
    private javax.swing.JTextField insNameTxt;
    private javax.swing.JLabel jLabel1;
    private javax.swing.JLabel jLabel2;
    private javax.swing.JLabel jLabel3;
    private javax.swing.JLabel jLabel4;
    private javax.swing.JLabel jLabel5;
    private javax.swing.JButton submitButton;
    private javax.swing.JTextField terminalIdTxt;
    private javax.swing.JTextField terminalNameTxt;
    // End of variables declaration


The table structure is :

name : ecgterminal

a4identity : int, auto increment, no null, key --> this is for
identity only
terminalid : varchar(10), no null, key
terminalname : varchar(10), no null
insname : varchar(30), no null
insaddr1 : varchar(30), no null
insaddr2 : varchar(30), no null

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