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When my application loads, which is made using netbeans, the first JTextField is automatically focused, and in this JTextField, I have written "Enter your Username", it will go away when the user clicks on this field, but when the application is loaded, this field is focused, means I can't see "Enter your Username", how to unfocus it on startup ?
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In order to create a non editable JTextField , all you have to do is: Create a class that extends JFrame . Create a new JTextField . Use setEditable(false) that sets the specified boolean to indicate whether or not this textfield should be editable.
We can restrict the number of characters that the user can enter into a JTextField can be achieved by using a PlainDocument class.
Notice the use of JTextField 's getText method to retrieve the text currently contained by the text field. The text returned by this method does not include a newline character for the Enter key that fired the action event.
The main difference between JTextField and JTextArea in Java is that a JTextField allows entering a single line of text in a GUI application while the JTextArea allows entering multiple lines of text in a GUI application.
textField.setFocusable(false);
textField.setFocusable(true);
If, and only if, textField had focus, the next component in TAB-order order will get focus automatically. The effect is the same as a TAB press.
(not tested in a GUI with just one focusable component :) )
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