validating a string with RegEx

Question

I am trying to validate a RegEx string in Java but i cant get it to work properly. I am attempting to make sure the the following string "AB10XY" is always contained with the textField when performing a search.

I have the following line of code which ensures that AB and XY are in the textField but not the number:

boolean checkChar = ((textField.getText().contains("AB")) && (textField.getText().contains("XY")));

I would prefer to have something like :

boolean checkChar = ((textField.getText().contains("AB[\\d]{2}XY")));

""AB10XY" is always contained with the textField when performing a search." Wouldn't it be simpler for you & the user to make that text field uneditable? — Andrew Thompson
– Andrew Thompson, Commented May 15, 2013 at 11:51
Were you intending to answer my question, or just ignore it? Note that there are probably better ways to go about this than using a RegEx, but until I have more details of the problem, it is hard to narrow them down. — Andrew Thompson
– Andrew Thompson, Commented May 15, 2013 at 12:26
Hi Sorry for the delay. i used one of the solutions listed below to fix the issue except i added brackets to the RegEx formula to say ".*[AB[\\d]{2}XY].*" it works perfectly so far. I am using this solution to check if "AB12XY" is in a path. eg : C:\Users\user\Documents\Handbacks\AB12XYmmmd (mmm=month, d=day) — user2385671
– user2385671, Commented May 15, 2013 at 14:11

Pshemo · Accepted Answer · 2013-05-15 11:52:24Z

1

You can try this way

boolean checkChar = ((textField.getText().matches(".*?AB[\\d]{2}XY.*")));

answered May 15, 2013 at 11:52

Pshemo

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1 Comment

Pshemo Over a year ago

@Anirudh true, but for some reason OP used it (maybe it will be expanded in real code)

DeadlyJesus · Accepted Answer · 2013-05-15 11:53:03Z

1

I'm guessing the number isn't alway 10, so you should use something like this:

boolean checkChar = textField.getText().matches(".*AB[\\d]{2}XY.*");

answered May 15, 2013 at 11:53

DeadlyJesus

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Comments

johnchen902 · Accepted Answer · 2013-05-15 11:54:13Z

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Use package java.util.regex to handle RegEx

boolean checkChar = java.util.regex.Pattern.compile("AB[\\d]{2}XY")
        .matcher(textField.getText()).find();

answered May 15, 2013 at 11:54

johnchen902

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michael_wu · Accepted Answer · 2013-05-16 05:32:17Z

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Contains method doesn't support regex..You can use matches method

 textField.getText().matches(".*AB\\d{2}XY.*");

edited May 16, 2013 at 5:32

michael_wu

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answered May 15, 2013 at 11:52

Anirudha

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