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I need to update my table with the values I get from a textbox. Lightweight Dispatcher.process Mouse Event(Unknown Source) at Jdbc Odbc Driver"); con = Driver Connection("jdbc:mysql://localhost:3306/gradingsystem", "root", ""); stm = con.create Statement(); String sql = "UPDATE gradesummary SET Prelim Grade='" + dbl Grade + "' WHERE ID='" + int ID + "' "; stm.execute Query(sql); JOption Message Dialog(null, "Database Updated", "ALERT", 1);[/color] } catch (Class Not Found Exception | SQLException e1) { // TODO Auto-generated catch block e1.print Stack Trace(); } } }); } At line 121 in the code sample above you're executing an update statement by invoking Statement's execute Query() method, which is not the appropriate method for DML / DDL queries. There are also several other issues with your code, not the least of which is a massive security hole that makes the application vulnerable to SQL injection. is there a way that I can like refresh my database so that the data i get on the textfield on another frame can be updated to the new values that I have just input on the other frame (Class Detailed Class). But if this all happens in just one application, both of these approaches would be a huge overkill. Some databases have mechanism you can use to monitor for changes that occurred in them. You should have an underlying data structure (a "model" in Swing terms) which would "own" the data, controlled their updates in the database and notified all dependent controls of any changes that were made to that data (generally only those that happened in your application, but if you wanted to react to external changes, this would be a great place to put that logic in too).

Each time I fire the save button, it gives me an error like so. SQLException: Can not issue data manipulation statements with execute Query(). SQLError.create SQLException(SQLError.java:1074) at com. SQLError.create SQLException(SQLError.java:988) at com. SQLError.create SQLException(SQLError.java:974) at com. SQLError.create SQLException(SQLError.java:919) at com. Statement Impl.check For Dml(Statement Impl.java:499) at com. Lightweight Dispatcher.dispatch Event(Unknown Source) at You should have a look at the Prepared Statement (There are also several other issues with your code, not the least of which is a massive security hole that makes the application vulnerable to SQL injection. I am learning Java on my own so I was not informed of this. Some databases have mechanism you can use to monitor for changes that occurred in them. You should have an underlying data structure (a "model" in Swing terms) which would "own" the data, controlled their updates in the database and notified all dependent controls of any changes that were made to that data (generally only those that happened in your application, but if you wanted to react to external changes, this would be a great place to put that logic in too). Without it, you have to quote string parameters and convert dates to formats recognized by your database, and every database has it's own ideas about how these things should be done (single quote or double quote? public class Login Engine { JFrame frame = new JFrame("LOGIN"); JPanel panel = new JPanel(new Flow Layout()); JText Field txt User Name = new JText Field(10); JText Field txt User Pass = new JText Field(10); JLabel lbl1 = new JLabel("User Name: "); JLabel lbl2 = new JLabel("Password: "); JButton btn Login = new JButton("Login"); JButton btn Exit = new JButton("Exit"); JLabel lbl12 = new JLabel("Student ID:"); JLabel lbl22 = new JLabel("Full Name:"); JLabel lbl3 = new JLabel("Account Type:"); JLabel lbl4 = new JLabel("Prelim Grade:"); JLabel blank = new JLabel(""); JText Field txt Full Name = new JText Field(15); JText Field txt ID = new JText Field(10); JText Field txt Prelim = new JText Field(10); JText Field txt Acct = new JText Field(10); JButton btn Details = new JButton("Details"); JButton btn Next = new JButton("Next"); JButton btn Prev = new JButton("Previous"); private String input Name, input Pass; public static String input Acct; boolean is False = false; int MAX_LEN = 10; public static int input ID; boolean is Same = false; Result Set rs2; public void Login GUI() { Size(245, 150); Visible(true); Default Close Operation(JFrame.

Statement Impl.execute Query(Statement Impl.java:1518) at Grading System. You should have a look at the Prepared Statement ( Thank you for that insight. I was thingking, why do I need to use a Prepared Statement when it is easier to use Create Statement. But I got the issue solved too I used it got my code working. Without it, you have to quote string parameters and convert dates to formats recognized by your database, and every database has it's own ideas about how these things should be done (single quote or double quote? HIDE_ON_CLOSE); Location Relative To(null); Resizable(false); frame.add(panel); panel.add(lbl1); panel.add(txt User Name); panel.add(lbl2); panel.add(txt User Pass); panel.add(btn Login); panel.add(btn Exit); // ############################################################################# txt User Key Listener(new Key Listener() { public void key Typed(Key Event e) { if(txt User Text().length() MAX_LEN){ txt User Text(txt User Text().substring(0, MAX_LEN)); } } public void key Released(Key Event e) {} public void key Pressed(Key Event e) {} }); // ############################################################################# btn Action Listener(new Action Listener() { public void action Performed(Action Event arg0) { Login(); } }); // ############################################################################# btn Action Listener(new Action Listener() { public void action Performed(Action Event arg0) { System.exit(1); } }); } // ############################################################################# public void Login() { try { Name("odbc.

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Event Queue.run(Unknown Source) at java.security. RIGHT); lbl Grade = new JLabel("Grade: "); lbl Blank = new JLabel(""); txt ID = new JText Field(10); txt Name = new JText Field(10); txt Quiz1 = new JText Field(10); txt Quiz2 = new JText Field(10); txt Grade = new JText Field(10); btn Calculate = new JButton("Calculate"); btn Back = new JButton("Back"); btn Save = new JButton("Save"); Size(200, 200); Visible(true); Default Close Operation(JFrame.

Protection DomainIntersection Privilege(Unknown Source) at java.security. Protection DomainIntersection Privilege(Unknown Source) at RIGHT); lbl Quiz2 = new JLabel("Quiz 2: ", Swing Constants.

Event Queue.run(Unknown Source) at java.security. Event Dispatch Events For Hierarchy(Unknown Source) at public class Detailed Class { JLabel lbl ID, lbl Name, lbl Quiz1, lbl Quiz2, lbl Grade, lbl Blank; JText Field txt ID, txt Name, txt Quiz1, txt Quiz2, txt Grade; JButton btn Calculate, btn Back, btn Save; int int ID; String str ID; Connection con; Statement stm; Result Set rs; public void Detailed GUI(int ID){ str ID = String(ID); final JFrame frame = new JFrame("Detailed Grades"); JPanel panel = new JPanel(new Grid Layout (7,4)); lbl ID = new JLabel("ID: "); lbl Name = new JLabel("Name: "); lbl Quiz1 = new JLabel("Quiz 1: ", Swing Constants.

Protection DomainIntersection Privilege(Unknown Source) at Event Dispatch Events For Filter(Unknown Source) at Event Dispatch Thread.run(Unknown Source) Here is my code...

Default Button Pressed(Unknown Source) at javax.basic. Basic Button Listener.mouse Released(Unknown Source) at is Same){ JOption Message Dialog(null, "Acces Denied!

Component.process Mouse Event(Unknown Source) at javax.swing. ", "ALERT", 0); txt User Text(""); txt User Text(""); } } } catch (Class Not Found Exception | SQLException err) { err.print Stack Trace(); } } public void Summary(){ Size(200, 200); Visible(true); Default Close Operation(JFrame. Lightweight Dispatcher.retarget Mouse Event(Unknown Source) at Jdbc Odbc Driver"); con = Driver Connection("jdbc:mysql://localhost:3306/gradingsystem", "root", ""); stm = con.create Statement(); String sql = "Select * from detailgrade where ID='" + str ID + "' "; stm.execute Query(sql); rs = Result Set(); rs.next(); int input ID = Int("ID"); double num1 = Double("Quiz1"); double num2 = Double("Quiz2"); String str Num1 = String(num1); String str Num2 = String(num2); String input Name = String("Full Name"); txt Text(String(input ID)); txt Text(input Name); txt Quiz1Text(str Num1); txt Quiz2Text(str Num2); } catch(Class Not Found Exception | SQLException err){ err.print Stack Trace(); } btn Action Listener(new Action Listener() { public void action Performed(Action Event arg0) { String str Num1 = txt Quiz1Text(); String str Num2 = txt Quiz2Text(); double num1 = Double.parse Double(str Num1); double num2 = Double.parse Double(str Num2); double num3 = (num1 + num2) / 2; String str Num3 = String(num3); txt Text(str Num3); } }); // ####################### THIS IS WHERE THE ERROR TAKES PLACE ###################### btn Action Listener(new Action Listener() { public void action Performed(Action Event arg0) { Visible(false); } }); btn Action Listener(new Action Listener() { public void action Performed(Action Event e) { String str Grade = txt Text(); String str ID = txt Text(); int int ID = Integer.parse Int(str ID); Double dbl Grade = Double.parse Double(str Grade); println(dbl Grade +" " +int ID); try { [color=red]Name("odbc. is there a way that I can like refresh my database so that the data i get on the textfield on another frame can be updated to the new values that I have just input on the other frame (Class Detailed Class). But if this all happens in just one application, both of these approaches would be a huge overkill. Event Queue.dispatch Event Impl(Unknown Source) at DISPOSE_ON_CLOSE); Resizable(false); Location Relative To(null); frame.add(panel); panel.add(lbl ID); panel.add(txt ID); panel.add(lbl Name); panel.add(txt Name); panel.add(lbl Quiz1); panel.add(txt Quiz1); panel.add(lbl Quiz2); panel.add(txt Quiz2); panel.add(lbl Blank); panel.add(btn Calculate); panel.add(lbl Grade); panel.add(txt Grade); panel.add(btn Back); panel.add(btn Save); txt Quiz1Text("0.00"); txt Quiz2Text("0.00"); println(ID); try{ Name("odbc. Event Dispatch One Event For Filters(Unknown Source) at DISPOSE_ON_CLOSE); Resizable(false); Location Relative To(null); Content Pane().remove All(); JPanel panel2 = new JPanel(new Grid Layout(6,2)); frame.add(panel2); frame.validate(); Title("SUMMARY"); panel2.add(lbl3); panel2.add(txt Acct); panel2.add(lbl12); panel2.add(txt ID); panel2.add(lbl22); panel2.add(txt Full Name); panel2.add(lbl4); panel2.add(txt Prelim); panel2.add(btn Details); panel2.add(blank); panel2.add(btn Prev); panel2.add(btn Next); txt Text(input Acct); txt Text(String(input ID)); try { Name("odbc.Jdbc Odbc Driver"); Connection con = Driver Connection("jdbc:mysql://localhost:3306/gradingsystem", "root", ""); Statement stm = con.create Statement(); String sql = "SELECT Full Name, Prelim Grade from gradesummary where ID='" + input ID + "' "; stm.execute Query(sql); Result Set rs = Result Set(); rs.next(); txt Full Text(String("Full Name")); txt Text(String("Prelim Grade")); String sql2 = "SELECT * from gradesummary"; String admin = txt Text(); if (admin.equals("Administrator")){ stm.execute Query(sql2); rs2 = Result Set(); } else { btn Enabled(false); btn Enabled(false); } } catch (Class Not Found Exception | SQLException e) { e.print Stack Trace(); } // ############################################################################# btn Action Listener(new Action Listener() { public void action Performed(Action Event arg0) { String pass ID = txt Text(); int passing ID = Integer.parse Int(pass ID); Detailed Class detailed = new Detailed Class(); detailed.