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empty textfield value


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ooomadhatterooo Posted: Sun Feb 10, 2002 6:41 pm


Joined: 31 Jan 2002

Posts: 26
empty textfield value
What is the value returned by surname.getText()
of a textfield, if someone doesn`t enter any value?
How do you test for it?<br><br>I tried:<br>if
(surname.getText() == "")<br>and<br>if (surname.getText() ==
null)<br>but neither seems to work - or am I doing something
else wrong?<br><br>Thanks.
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gblue42 Posted: Sun Feb 10, 2002 10:18 pm


Joined: 10 Feb 2002

Posts: 15
empty textfield value
Try using the equals() method like so:<br><br>if
(surname.getText().trim().equals(""))
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epenak Posted: Mon Feb 11, 2002 10:46 pm


Joined: 31 Jan 2002

Posts: 39
empty textfield value
If surname has not been initialized it will be
null. You will experience a NullPointerException
whenever you try to call one of surname`s methods in this
situation. <br><br>Test first for the null.<br>if (surname
!= null) {// do work here}<br><br>My 2
cents<br>epenak
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