How do I create a formatted textfield that only accepts IP addresses?

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How do I create a formatted textfield that only accepts IP addresses?

JDK1.4 introduced the JFormattedTextfield with which you can set a mask on a text field.
This example not only shows you how to set the mask (eg. 255.255.xxx.xxx), but also how to use an InputVerifier to check whether the inputted digits lie in the range [0-255].

Main.java:

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Author of answer: Joris Van den Bogaert

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