setting focus from one window to the next

[airrazor]

Hi everyone,
I need help on seting focus on windows. I have a JFrame window that contains the main method and it is a gui interface. It creates another JFrame window with a button. When you run the program it creates both JFrame windows. I would like to have the window with the button to have focus so that the user can not access the gui interface until he closes the first window. I have tried to use setVisible(false) and setEnabled(false) in the constructor which accomplishes disabling the gui on start up but i can not re-enable it when i close the first window.

[mohit]

Call toFront on the frame with button. For more information

http://java.sun.com/j2se/1.4.2/docs/....html#toFront()

[mr1yh1]

you need a simple modal frame , JOptionPane can do it:
http://java.sun.com/docs/books/tutor...ts/dialog.html

[airrazor]

Thanks mr1hy1,
I tried the link and it helped me out. I have a custom dialog box with a texbox and a password field. Are you able to connect a dialog box to a database? What i was trying to do was create a login window that connects to a database to search for accounts. And the window cannot loose focus to the main window.

Do you have any suggestions on this one?

[mr1yh1]

JOptionPane give some standart modal frames.
even you can do more , becos its message is not a String , its Component ( even you can put a JPanel ).

but if you need something more special ,
you can write your own class which extends JDialog ( not JFrame ).
JDialog class has a constructor like this :
JDialog ( JFrame owner , boolean modal )

[airrazor]

Hi I tried to connect the JDialog box to a database using the same code as I have for other programs using JFrames. But when i compile it it gives me an error message stating that the line:

Statement st = conn.createStatement();

error message -> reference to Statement is ambiguous, both class java.sql.Statment in java.sql and class java.beans.Statement in java.beans match

I don't get this when i run this in a normal program only when i use it in a dialog box.

Here is the code that i used to connect to the database:

String data = "jdbc:mysql://localhost:3306/p1";
try {
Class.forName("com.mysql.jdbc.Driver");
Connection conn = DriverManager.getConnection(
data, "root", "pass");
--> Statement st = conn.createStatement();
ResultSet rec = st.executeQuery(
"SELECT * " +
"FROM ident ");
while(rec.next()) {
int n = 1;
System.out.println(rec.getString(++n) + "\t"
+rec.getString(++n) + "\t"
+rec.getString(++n) + "\t"
+rec.getString(++n) + "\t"
+ rec.getString(++n));
}
st.close();
} catch (SQLException s) {
System.out.println("SQL Error: " + s.toString() + " "
+ s.getErrorCode() + " " + s.getSQLState());
} catch (Exception ev) {
System.out.println(" Error: " + ev.toString()
+ ev.getMessage());
}


What do you think is the problem?

[airrazor]

sorry i figured it out. I got it to work.

I've run into another glitch. I have a database with the name richard in it. I have the dialog box ask for a name you type in richard. Then the program is suppose to find the record with the name richard. and return the resultset. I try to check if what i have written in the textbox is the same as what has been retreived from the database. But when i use if (a==b) it doesn't work. It prints out "not found". When it should print out "found".

What i would like the program to do is ask for a name and then check to see if the name is in the database.

Here is the code:

String a = textField.getText();
String data = "jdbc:mysql://localhost:3306/p1";
try {
Class.forName("com.mysql.jdbc.Driver");
Connection conn = DriverManager.getConnection(
data, "root", "naofumi");
Statement st = conn.createStatement();
ResultSet rec = st.executeQuery(
"SELECT * " +
"FROM ident " +
"WHERE fname='"+a+"'");
System.out.println("First Name\t Last Name\t Account\t"+
"ID\t Password");
while(rec.next()) {
int n = 1;
String b = rec.getString(n);
System.out.println("this is what is in a " +a);
System.out.println("this is what is in b " +b);
if (a==b) {
System.out.println("found");
}
else {
System.out.println("not found");
}
}
st.close();
} catch (SQLException s) {
System.out.println("SQL Error: " + s.toString() + " "
+ s.getErrorCode() + " " + s.getSQLState());
} catch (Exception ev) {
System.out.println(" Error: " + ev.toString()
+ ev.getMessage());
}