How to execute a shell command from Java using Runtime.getRuntime().exec() method.

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How to generate UUID / GUID in Java using java.util.UUID class, UUID.randomUUID() method.

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How to read XML file in Java using SAX Parser.

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How to marshal a JAXB object into org.w3c.dom.Document using Transformer class and formatted console print.

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How to split a string in Java using both variants of the split() method: split(String regex) and split(String regex, int limit).

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How to get network interfaces in Java using NetworkInterface class.

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