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Java JDBC Tutorial – Part 3: Updating Data in a MySQL Database
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23 responses to “Java JDBC Tutorial – Part 3: Updating Data in a MySQL Database”
Great tutorial! Mad props!
Superb video sir, if is it possible make video on netbeans ide
Thankyou very much
Very useful tuto , really thanks.
Statement stmt = con.create Statement();
String query = "alter table personinfo add email varchar(50)";
stmt.executeUpdate(query);
i added new column to my table and it worked….. i now want to know how to insert into multiple rows using a single query …
as i already did this
Statement stmt = conn.createStatement();
String query = "update personinfo set email='xyz@gmail.com' where Id=2";
stmt.executeUpdate(query);
System.out.println("value Added");
this also works but need to know how to do it in a single query for different Id's with different email's
EXECELENTE, GRACIA AMIGO. Saludos desde Perú!
Bless you, you're a lifesaver.
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 '= 'demo@gmail.com'where id = 3' at line 1
at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:62)
at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
at java.lang.reflect.Constructor.newInstance(Constructor.java:423)
at com.mysql.jdbc.Util.handleNewInstance(Util.java:425)
at com.mysql.jdbc.Util.getInstance(Util.java:408)
at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:943)
at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:3973)
at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:3909)
at com.mysql.jdbc.MysqlIO.sendCommand(MysqlIO.java:2527)
at com.mysql.jdbc.MysqlIO.sqlQueryDirect(MysqlIO.java:2680)
at com.mysql.jdbc.ConnectionImpl.execSQL(ConnectionImpl.java:2486)
at com.mysql.jdbc.StatementImpl.executeUpdateInternal(StatementImpl.java:1552)
at com.mysql.jdbc.StatementImpl.executeLargeUpdate(StatementImpl.java:2607)
at com.mysql.jdbc.StatementImpl.executeUpdate(StatementImpl.java:1480)
at jdemo.Update.main(Update.java:18)
Hello sir,
your videos are very helpful for me. I learned much from it 🙂
By the way, you have an error in your SQL syntax in the jdbcdemo-update.zip data.
The error is at the row 26: String sql = "update employees set email='demo@luv2code.com where id=9";
It should be: String sql = "update employees set email='demo@luv2code.com' where id=9";
Only <'> is missing after <… com>
Thank you for the nice turtorial!
package pack1;
import java.sql.*;
public class Test {
public static void main(String[] args) {
String url="jdbc:mysql://localhost:3306/sqldatabase";
String username="root";
String password="12345";
try{
// Class.forName("com.mysql.jdbc.Driver");
Connection con=DriverManager.getConnection(url,username,password);
Statement stmt=con.createStatement();
String sql="update table1 "+"set place='sourya'"+" where name=deep";
stmt.executeUpdate(sql);
System.out.println("update completed");
con.close();
}catch(Exception e){ System.out.println(e);}
}
}
Where is the problem?.
Your videos are amazing and so informative.
i have question regarding the database mysql. if i export a java application as jar file, does the database itself export with the jar file. in other word, does the application work on any kind of pc and still can connect to the database ?
Hello sir ,
I have a problem in my project –
How to Display a calendar with some block dates in it?
Block dates according to the database(mysql database)
and , for each date of calendar , there should be a drop down of flights available for that flight.
for example ,
an employee 'Neha' login to air hostess mgmt system.
then for her there are flights on some date.
she select 01jul-2016, then she will see list of available flight for that selected date.
if there are no flight then she will see a red cross on that date.
Hi sir , when I download the same connector it isn't the same as you . Do you have any command to say ? I downloaded the same software from the same website , but I dont know what is the problem .
+luv2code
Hello, your instructions were very clear.
I was trying to implement a project using the above concept. I wanted to add the output from a command "netstat -b" into the database using jdbc, but I was not able to implement it. I kept getting errors. Can you please tell me what's wrong with the code:
public class Netstatb {
public static void main(String[] args) {
String proto, local_Address, foreign_Address, state;
final String cmd = "netstat -b";
try {
Process process = Runtime.getRuntime().exec(cmd);
BufferedReader br = new BufferedReader(new InputStreamReader(process.getInputStream()));
//String line;
System.out.println(br.readLine());
while (br.readLine() != null){
//String temp = br.readLine().trim();
if ((br.readLine().trim()).contains("Active Connections")) {
}
else if (br.readLine().trim().contains("Proto")) {
} else if (br.readLine().trim().isEmpty()) {
}
else {
List <String> output = Arrays.asList(br.readLine().trim().split("\s++"));
proto = output.get(0);
local_Address = output.get(1);
foreign_Address = output.get(2);
state = output.get(3);
new Netstatb().SQLRun(proto, local_Address, foreign_Address, state);
}
}
process.waitFor();
br.close();
System.exit(0);
}catch(Exception exc) {
exc.printStackTrace();
}
}
public void SQLRun(String proto, String local_Address, String foreign_Address, String state) {
try {
//1.Get a connections to database
Connection newConn = DriverManager.getConnection("jdbc:mysql://localhost:3306/nets", "root", "" );
//Create statement object
//Statement newStmt1 = newConn.createStatement();
/*String CreateTable = "CREATE table netstat"
+ "(Proto varchar(50),"
+ "Local_Address varchar(50),"
+ "Foreign_Address(80),"
+ "State);";*/
String insert = "INSERT into netstatb values" +
"( " + proto + ", " + local_Address + ", "
+ foreign_Address + ", " + state + " );";
Statement newStmt2 = null;
try {//Execute SQL query
//newStmt1.executeUpdate(CreateTable);
newStmt2 = newConn.createStatement();
newStmt2.executeUpdate(insert);
}
finally {
if (newStmt2 != null) {
newStmt2.close();
}
}
}catch(Exception exc) {
exc.printStackTrace();
}
}
}
hi ur videos r awesome but i need a little help. i made user record using ms access in java. after inserted deleted or updating the data, data will not show in window. what i can do this is my first project plz help me
Hello chad,
While I run this code:
package jdbcdemo;
import java.sql.DriverManager;
import java.sql.Connection;
import java.sql.Statement;
public class Update {
public static void main(String[] args) {
String url = "jdbc:mysql://localhost:3306/demo";
String user = "student";
String pass = "student";
try{
Connection myConn = DriverManager.getConnection(url, user, pass);
Statement myStmt = myConn.createStatement();
String sql = "update employees"
+ "set email ='bollywood@human.com' "
+ "where id=15";
myStmt.executeUpdate(sql);
System.out.println("Update Complete..");
}
catch(Exception exc){
exc.printStackTrace();
}
}
}
Then it shows this message in output:
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 '='bollywood@human.com' where id=15' at line 1
at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:62)
at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
at java.lang.reflect.Constructor.newInstance(Constructor.java:422)
at com.mysql.jdbc.Util.handleNewInstance(Util.java:404)
at com.mysql.jdbc.Util.getInstance(Util.java:387)
at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:939)
at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:3878)
at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:3814)
at com.mysql.jdbc.MysqlIO.sendCommand(MysqlIO.java:2478)
at com.mysql.jdbc.MysqlIO.sqlQueryDirect(MysqlIO.java:2625)
at com.mysql.jdbc.ConnectionImpl.execSQL(ConnectionImpl.java:2547)
at com.mysql.jdbc.StatementImpl.executeUpdateInternal(StatementImpl.java:1541)
at com.mysql.jdbc.StatementImpl.executeLargeUpdate(StatementImpl.java:2605)
at com.mysql.jdbc.StatementImpl.executeUpdate(StatementImpl.java:1469)
at jdbcdemo.Update.main(Update.java:22)
So do u have any solution for that…
Is there any way to use a parameter inside the statement. For example, UPDATE `some table` SET `column` = column + more stuff WHERE `Level Name` = ?
For some reason given SQL query didn't work.
String sql = "update employees"+"set email = 'demo@luv2code.com'" + "where id=9";
This query worked for me
String sql = "update employees set email= 'demo@luv2code.com' where id =9";
I endorse Vertex Techno words!!!!!
Is there the possibility to get the pdf file from all your MySql classes?
Easy to understand ! , short videos ! , extremely perfect !
Thank you very much !!
Ten minutes of your tutorials teached me more then listening to my professor at university for six months. Really good tutorials dude!
very nice job