Examples of java.math.BigInteger.multiply()

java.math.BigInteger.multiply()
Returns a BigInteger whose value is {@code (this * val)}. @param val value to be multiplied by this BigInteger. @return {@code this * val}


    public BigIntegerToken getRandomToken()
    {
        BigInteger token = FBUtilities.hashToBigInteger(GuidGenerator.guidAsBytes());
        if ( token.signum() == -1 )
            token = token.multiply(BigInteger.valueOf(-1L));
        return new BigIntegerToken(token);
    }


    private final Token.TokenFactory<BigInteger> tokenFactory = new Token.TokenFactory<BigInteger>() {
        public ByteBuffer toByteArray(Token<BigInteger> bigIntegerToken)

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//------------------


private static BigInteger getFactorial (int n) {
 BigInteger fact = BigInteger.ONE;
 for (int i = n; i > 1; i--) {
   fact = fact.multiply (new BigInteger (Integer.toString (i)));
 }
 return fact;
}


//--------------------------------------------------------

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                ((long) (Math.random() * Long.MAX_VALUE)) + "");


        BigInteger multiplier = new BigInteger("1");
        // (1 + (int)(Math.random () * 10000)) + "");
        if (Math.random() < 0.5)
            multiplier = multiplier.multiply(new BigInteger("-1"));


        return lng.multiply(multiplier);
    }


    /**

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        BigInteger k2p    = k;
        while (e != 0) {
            if ((e & 0x1) != 0) {
                result = result.multiply(k2p);
            }
            k2p = k2p.multiply(k2p);
            e >>= 1;
        }


        return result;

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        BigInteger k2p    = k;
        while (!BigInteger.ZERO.equals(e)) {
            if (e.testBit(0)) {
                result = result.multiply(k2p);
            }
            k2p = k2p.multiply(k2p);
            e = e.shiftRight(1);
        }


        return result;
    }

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    public BigIntegerToken getRandomToken()
    {
        BigInteger token = FBUtilities.hashToBigInteger(GuidGenerator.guidAsBytes());
        if ( token.signum() == -1 )
            token = token.multiply(BigInteger.valueOf(-1L));
        return new BigIntegerToken(token);
    }


    private final Token.TokenFactory<BigInteger> tokenFactory = new Token.TokenFactory<BigInteger>() {
        public ByteBuffer toByteArray(Token<BigInteger> bigIntegerToken)

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                minOccurs = minOccurs.multiply(min);
                if (max != null && max.equals(BigInteger.ZERO))
                    maxOccurs = BigInteger.ZERO;
                else if (maxOccurs != null && !maxOccurs.equals(BigInteger.ZERO))
                    maxOccurs = max == null ? null : maxOccurs.multiply(max);


                ((SchemaPropertyImpl)oProp).setMinOccurs(minOccurs);
                ((SchemaPropertyImpl)oProp).setMaxOccurs(maxOccurs);
            }
        }

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        // initial values
        BigInteger r = a.modPow(k, p); // r = a^k mod p


        BigInteger n = r.multiply(r).remainder(p); // n = r^2 % p
        n = n.multiply(a).remainder(p); // n = n * a % p
        r = r.multiply(a).remainder(p); // r = r * a %p


        if (n.equals(ONE))
        {
            return r;

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            {
                v = v.shiftLeft(1); // v = 1 * 2^(t - 1)
            }
            c = c.modPow(v, p); // c = c^v mod p
            r = r.multiply(c).remainder(p); // r = r * c % p
            c = c.multiply(c).remainder(p); // c = c^2 % p
            n = n.multiply(c).mod(p); // n = n * c % p
        }
        return r;
    }

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            t = n - t;
        }


        for (int i = 1; i <= t; i++)
        {
            result = (result.multiply(BigInteger.valueOf(n - (i - 1))))
                .divide(BigInteger.valueOf(i));
        }


        return result;
    }

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