hi people...please help me with this..i writing a program with textfields that a user is supposed to put data in, how can i create an error message and/or a beep to pop up when the user has not entered a value in a textfield..
realnsleo
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peter_budo
2,532
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This will show warning message if condition meat
if(valueOfTheTextField != "what_I_want")
{
JOptionPane.showMessageDialog(null,"Index file not selected",
"Warning",JOptionPane.WARNING_MESSAGE);
}More info can be found here http://java.sun.com/docs/books/tutorial/uiswing/components/dialog.html
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