Example usage for java.math BigInteger BigInteger

Introduction

In this page you can find the example usage for java.math BigInteger BigInteger.

Prototype

private BigInteger(long val) 

Source Link

Document

Constructs a BigInteger with the specified value, which may not be zero.

Usage

From source file:io.github.benas.jpopulator.randomizers.validation.MaxValueRandomizer.java

/**
 * Generate a random value for the given type.
 *
 * @param type the type for which a random value will be generated
 * @param maxValue the maximum threshold for the generated value
 * @return a random value (lower than maxValue) for the given type or null if the type is not supported
 *//*from   ww  w  . j a v  a  2s  .  c  o m*/
public static Object getRandomValue(final Class type, final long maxValue) {

    if (type.equals(Byte.TYPE) || type.equals(Byte.class)) {
        return (byte) randomDataGenerator.nextLong(Byte.MIN_VALUE, maxValue);
    }
    if (type.equals(Short.TYPE) || type.equals(Short.class)) {
        return (short) randomDataGenerator.nextLong(Short.MIN_VALUE, maxValue);
    }
    if (type.equals(Integer.TYPE) || type.equals(Integer.class)) {
        return (int) randomDataGenerator.nextLong(Integer.MIN_VALUE, maxValue);
    }
    if (type.equals(Long.TYPE) || type.equals(Long.class)) {
        return randomDataGenerator.nextLong(Long.MIN_VALUE, maxValue);
    }
    if (type.equals(BigInteger.class)) {
        return new BigInteger(String.valueOf(randomDataGenerator.nextLong(Long.MIN_VALUE, maxValue)));
    }
    if (type.equals(BigDecimal.class)) {
        return new BigDecimal(randomDataGenerator.nextLong(Long.MIN_VALUE, maxValue));
    }
    return null;
}

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From source file:io.github.benas.jpopulator.randomizers.validation.MinValueRandomizer.java

/**
 * Generate a random value for the given type.
 *
 * @param type the type for which a random value will be generated
 * @param minValue the minimum threshold for the generated value
 * @return a random value (greater than maxValue) for the given type or null if the type is not supported
 *//* w  w w. j  ava 2s. c om*/
public static Object getRandomValue(final Class type, final long minValue) {

    if (type.equals(Byte.TYPE) || type.equals(Byte.class)) {
        return (byte) randomDataGenerator.nextLong(minValue, Byte.MAX_VALUE);
    }
    if (type.equals(Short.TYPE) || type.equals(Short.class)) {
        return (short) randomDataGenerator.nextLong(minValue, Short.MAX_VALUE);
    }
    if (type.equals(Integer.TYPE) || type.equals(Integer.class)) {
        return (int) randomDataGenerator.nextLong(minValue, Integer.MAX_VALUE);
    }
    if (type.equals(Long.TYPE) || type.equals(Long.class)) {
        return randomDataGenerator.nextLong(minValue, Long.MAX_VALUE);
    }
    if (type.equals(BigInteger.class)) {
        return new BigInteger(String.valueOf(randomDataGenerator.nextLong(minValue, Long.MAX_VALUE)));
    }
    if (type.equals(BigDecimal.class)) {
        return new BigDecimal(randomDataGenerator.nextLong(minValue, Long.MAX_VALUE));
    }
    return null;
}

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From source file:me.yanaga.querydsl.args.core.single.SingleBigIntegerArgumentTest.java

@BeforeMethod
public void setUp() {
    Person person = new Person();
    person.setOneBigInteger(new BigInteger("123"));
    person.setAnotherBigInteger(new BigInteger("321"));
    person.setOneCustomNumberType(CustomNumberType.of(new BigDecimal(222)));
    entityManager.persist(person);/*  w  ww. j a  v  a  2  s  . c o  m*/
}

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From source file:RandomUtil.java

public static BigInteger randomBitFlip(BigInteger n) {
    if (n.equals(BigInteger.ONE))
        return BigInteger.ONE;
    if (n.equals(BigInteger.ZERO))
        return BigInteger.ZERO;

    BigInteger toRet = BigInteger.ONE;
    while (toRet.equals(BigInteger.ONE) || toRet.equals(BigInteger.ZERO)) {
        byte[] bytes = n.toByteArray();
        getInstance().random.nextBytes(bytes);
        // could allow up to maxExclusive by converting and checking value
        // but this is faster, even if it doesn't give us full range
        bytes[0] = 0;//  w ww .  j a v a2s.  co m
        toRet = new BigInteger(bytes);
    }
    return toRet;
}

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From source file:com.ok2c.lightmtp.util.InetAddressRange.java

public boolean contains(final InetAddress ip) {
    BigInteger bigint2 = new BigInteger(ip.getAddress());
    if (this.shiftBy > 0) {
        bigint2 = bigint2.shiftRight(this.shiftBy);
    }// w  w  w .  ja  v a2s  .  c om
    return this.bigint.compareTo(bigint2) == 0;
}

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From source file:com.streamreduce.util.CAGenerator.java

public static X509Certificate generateCACert(KeyPair keyPair) throws Exception {
    Date startDate = new Date(System.currentTimeMillis()); // time from which certificate is valid
    Calendar expiry = Calendar.getInstance();
    expiry.add(Calendar.DAY_OF_YEAR, 1000 * 365);
    Date expiryDate = expiry.getTime(); // time after which certificate is not valid
    BigInteger serialNumber = new BigInteger(Long.toString(System.currentTimeMillis())); // serial number for certificate

    X509V3CertificateGenerator certGen = new X509V3CertificateGenerator();
    X500Principal dnName = new X500Principal("CN=Nodeable Client");

    certGen.setSerialNumber(serialNumber);
    certGen.setIssuerDN(dnName);// w w  w  .  ja va  2 s .c om
    certGen.setNotBefore(startDate);
    certGen.setNotAfter(expiryDate);
    certGen.setSubjectDN(dnName);
    certGen.setPublicKey(keyPair.getPublic());
    certGen.setSignatureAlgorithm("MD5withRSA");

    certGen.addExtension(X509Extensions.AuthorityKeyIdentifier, false,
            new AuthorityKeyIdentifierStructure(keyPair.getPublic()));
    certGen.addExtension(X509Extensions.SubjectKeyIdentifier, false,
            new SubjectKeyIdentifierStructure(keyPair.getPublic()));

    return certGen.generate(keyPair.getPrivate()); // note: private key of CA
}

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From source file:localSPs.CubbyAPI.java

public double getStorageSize() throws IOException {
    BigInteger num = new BigInteger("1024");
    String ans = "";
    BigInteger totalMemory = new BigInteger("5368709120");
    BigInteger used;// www . j  av  a 2  s .  co m
    File dir = new File(ROOT_PATH);
    long totalUsed = 0; // total bytes
    List<File> files = (List<File>) FileUtils.listFiles(dir, TrueFileFilter.INSTANCE, TrueFileFilter.INSTANCE);
    for (File file : files) {
        totalUsed += file.length();
    }
    used = new BigInteger(String.valueOf(totalUsed));
    ans = totalMemory.subtract(used).divide(num).divide(num).toString();//MB
    return (Double.parseDouble(ans));
}

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From source file:dk.alexandra.fresco.suite.bgw.configuration.BgwConfiguration.java

public static BgwConfiguration fromCmdLine(SCEConfiguration sceConf, CommandLine cmd) throws ParseException {
    // Validate BGW specific arguments.
    Properties p = cmd.getOptionProperties("D");
    if (!p.containsKey("bgw.threshold")) {
        throw new ParseException("BGW requires setting -Dbgw.threshold=[int]");
    }// w  ww  .j av  a2  s  .  c  o  m

    try {
        final int threshold = Integer.parseInt(p.getProperty("bgw.threshold"));
        if (threshold < 1)
            throw new ParseException("bgw.threshold must be > 0");
        if (threshold > sceConf.getParties().size() / 2)
            throw new ParseException("bgw.threshold must be < n/2");

        final BigInteger modulus = new BigInteger(p.getProperty("bgw.modulus", "618970019642690137449562111"));
        if (!modulus.isProbablePrime(40)) {
            throw new ParseException("BGW Modulus must be a prime number");
        }

        return new BgwConfiguration() {

            @Override
            public int getThreshold() {
                return threshold;
            }

            @Override
            public BigInteger getModulus() {
                return modulus;
            }

        };
    } catch (NumberFormatException e) {
        throw new ParseException("Invalid bgw.threshold value: '" + p.getProperty("bgw.threshold") + "'");
    }
}

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From source file:localSPs.BearDataShareAPI.java

public double getStorageSize() throws IOException {
    BigInteger num = new BigInteger("1024");
    String ans = "";
    BigInteger totalMemory = new BigInteger("21474836480");
    BigInteger used;/*  w  w  w .  j  a  v  a2 s. c  om*/
    File dir = new File(ROOT_PATH);
    long totalUsed = 0; // total bytes
    List<File> files = (List<File>) FileUtils.listFiles(dir, TrueFileFilter.INSTANCE, TrueFileFilter.INSTANCE);
    for (File file : files) {
        totalUsed += file.length();
    }
    used = new BigInteger(String.valueOf(totalUsed));
    ans = totalMemory.subtract(used).divide(num).divide(num).toString();//MB
    return (Double.parseDouble(ans));
}

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From source file:me.j360.trace.server.brave.BraveConfiguration.java

/** This gets the lanIP without trying to lookup its name. */
// http://stackoverflow.com/questions/8765578/get-local-ip-address-without-connecting-to-the-internet
@Bean/* w  w w.  j ava 2s .  c  o m*/
@Scope
Endpoint local(@Value("${server.port:9411}") int port) {
    int ipv4;
    try {
        ipv4 = Collections.list(NetworkInterface.getNetworkInterfaces()).stream()
                .flatMap(i -> Collections.list(i.getInetAddresses()).stream())
                .filter(ip -> ip instanceof Inet4Address && ip.isSiteLocalAddress())
                .map(InetAddress::getAddress).map(bytes -> new BigInteger(bytes).intValue()).findAny().get();
    } catch (Exception ignored) {
        ipv4 = 127 << 24 | 1;
    }
    return Endpoint.create("zipkin-server", ipv4, port);
}

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