using Java how do I convert a long to a BigInteger?

using Java how do I convert a long to a BigInteger?
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From long to Long to String to BigInteger (using ) is one way.

See here for an example: (the second post)

Although any conversion from long to String and then followed by conversion to BigInteger will do.
Actually, this method from the BigInteger class is straigthforward:

public static BigInteger valueOf(long val)

Available at least from JDK 1.4.2

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Shows when is the last time I used BigInteger - yep, valueOf should do the trick.
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