Example usage for java.math BigDecimal BigDecimal

Introduction

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

Prototype

public BigDecimal(long val) 

Source Link

Document

Translates a long into a BigDecimal .

Usage

From source file:org.castor.jaxb.allannotations.XmlValueTest.java

@Test
public void testFullCycle() throws JAXBException {
    JAXBContext context = JAXBContext.newInstance(ForXmlValue.class);
    Marshaller m = context.createMarshaller();
    StringWriter sw = new StringWriter();
    ForXmlValue fxv = new ForXmlValue();
    fxv.content = new BigDecimal(4711);
    m.marshal(fxv, sw);/*www.  j a  v a2  s . c  om*/
    System.out.println(sw.toString());
}

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From source file:Main.java

public static BigDecimal log10(BigDecimal b) {
    final int NUM_OF_DIGITS = SCALE + 2;
    // need to add one to get the right number of dp
    //  and then add one again to get the next number
    //  so I can round it correctly.

    MathContext mc = new MathContext(NUM_OF_DIGITS, RoundingMode.HALF_EVEN);
    //special conditions:
    // log(-x) -> exception
    // log(1) == 0 exactly;
    // log of a number lessthan one = -log(1/x)
    if (b.signum() <= 0) {
        throw new ArithmeticException("log of a negative number! (or zero)");
    } else if (b.compareTo(BigDecimal.ONE) == 0) {
        return BigDecimal.ZERO;
    } else if (b.compareTo(BigDecimal.ONE) < 0) {
        return (log10((BigDecimal.ONE).divide(b, mc))).negate();
    }//  ww w .  j  a va  2 s. co  m

    StringBuilder sb = new StringBuilder();
    //number of digits on the left of the decimal point
    int leftDigits = b.precision() - b.scale();

    //so, the first digits of the log10 are:
    sb.append(leftDigits - 1).append(".");

    //this is the algorithm outlined in the webpage
    int n = 0;
    while (n < NUM_OF_DIGITS) {
        b = (b.movePointLeft(leftDigits - 1)).pow(10, mc);
        leftDigits = b.precision() - b.scale();
        sb.append(leftDigits - 1);
        n++;
    }

    BigDecimal ans = new BigDecimal(sb.toString());

    //Round the number to the correct number of decimal places.
    ans = ans.round(new MathContext(ans.precision() - ans.scale() + SCALE, RoundingMode.HALF_EVEN));
    return ans;
}

---

From source file:Main.java

public static BigDecimal log10(BigDecimal b) {
    final int NUM_OF_DIGITS = SCALE + 2;
    // need to add one to get the right number of dp
    // and then add one again to get the next number
    // so I can round it correctly.

    MathContext mc = new MathContext(NUM_OF_DIGITS, RoundingMode.HALF_EVEN);
    // special conditions:
    // log(-x) -> exception
    // log(1) == 0 exactly;
    // log of a number lessthan one = -log(1/x)
    if (b.signum() <= 0) {
        throw new ArithmeticException("log of a negative number! (or zero)");
    } else if (b.compareTo(BigDecimal.ONE) == 0) {
        return BigDecimal.ZERO;
    } else if (b.compareTo(BigDecimal.ONE) < 0) {
        return (log10((BigDecimal.ONE).divide(b, mc))).negate();
    }//from   w w w.j  a v a  2  s  .c o  m

    StringBuilder sb = new StringBuilder();
    // number of digits on the left of the decimal point
    int leftDigits = b.precision() - b.scale();

    // so, the first digits of the log10 are:
    sb.append(leftDigits - 1).append(".");

    // this is the algorithm outlined in the webpage
    int n = 0;
    while (n < NUM_OF_DIGITS) {
        b = (b.movePointLeft(leftDigits - 1)).pow(10, mc);
        leftDigits = b.precision() - b.scale();
        sb.append(leftDigits - 1);
        n++;
    }

    BigDecimal ans = new BigDecimal(sb.toString());

    // Round the number to the correct number of decimal places.
    ans = ans.round(new MathContext(ans.precision() - ans.scale() + SCALE, RoundingMode.HALF_EVEN));
    return ans;
}

---

From source file:com.mycompany.carshop.test.repository.CustomerInvoiceTest.java

@Test(enabled = true)
public void createInvoice() {
    invoiceRepository = ctx.getBean(CustomerInvoiceRepository.class);

    CustomerInvoice invoice = new CustomerInvoice.Builder("20583").invoiceDate(new Date())
            .orderAmount(new BigDecimal(150.00)).invoiceStatus("Paid").build();

    invoiceRepository.save(invoice);/* w ww  .  j a  v a 2 s . c  o  m*/
    id = invoice.getId();
    Assert.assertNotNull(invoice);
}

---

From source file:io.wcm.caravan.io.jsontransform.sink.JacksonJsonNodeSinkTest.java

@Test
public void test_simple() throws IOException {
    JacksonJsonNodeSink sink = new JacksonJsonNodeSink(new JsonFactory());
    assertNull(sink.getJsonNode());/*from   ww w.j  ava2s. c  o m*/
    sink.write(JsonElement.DEFAULT_START_OBJECT);
    sink.write(JsonElement.value("key1", "value1"));
    sink.write(JsonElement.startObject("key2"));
    sink.write(JsonElement.value("key3", new BigDecimal("1234.56")));
    sink.write(JsonElement.DEFAULT_END_OBJECT);
    sink.write(JsonElement.startArray("key4"));
    sink.write(JsonElement.value(true));
    sink.write(JsonElement.DEFAULT_START_OBJECT);
    sink.write(JsonElement.value("key5", "value5"));
    sink.write(JsonElement.DEFAULT_END_OBJECT);
    sink.write(JsonElement.DEFAULT_END_ARRAY);
    sink.write(JsonElement.DEFAULT_END_OBJECT);

    JsonNode root = sink.getJsonNode();
    assertEquals("value1", root.get("key1").asText());
    assertEquals(new BigDecimal("1234.56"), root.get("key2").get("key3").decimalValue());
    assertTrue(root.get("key4").get(0).asBoolean());
    assertEquals("value5", root.get("key4").get(1).get("key5").asText());
    sink.close();

}

---

From source file:com.espertech.esper.epl.agg.aggregator.AggregatorAvgBigDecimal.java

public void clear() {
    sum = new BigDecimal(0.0);
    numDataPoints = 0;
}

---

From source file:example.orders.Application.java

@PostConstruct
public void init() {

    Customer dave = customers.save(new Customer("Dave", "Matthews", Gender.MALE, //
            new Address("4711 Some Place", "54321", "Charlottesville", "VA")));

    Order order = new Order();

    order.setCustomer(dave);//w w w .  j av  a  2s .c om
    order.add(new LineItem("Lakewood guitar", new BigDecimal(1299.0)));

    orders.save(order);
}

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From source file:ch.algotrader.util.RoundUtil.java

public static BigDecimal getBigDecimal(double value, int scale) {

    if (Double.isNaN(value) || Double.isInfinite(value)) {
        return null;
    } else {/*from  www .ja v a 2  s  .c o  m*/
        BigDecimal decimal = new BigDecimal(value);
        return decimal.setScale(scale, BigDecimal.ROUND_HALF_UP);
    }
}

---

From source file:be.ceau.chart.dataset.PieDataset.java

/**
 * Sets the backing data list to the argument, replacing any data already
 * added or set/* w w  w.  j a va  2  s .  c  om*/
 * 
 * @param data
 *            The data to plot in a line
 */
public PieDataset setData(int... data) {
    clearData();
    if (data != null) {
        for (int i = 0; i < data.length; i++) {
            this.data.add(new BigDecimal(data[i]));
        }
    }
    return this;
}

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From source file:mobile.vo.rns.RequireDetailVO.java

public static RequireDetailVO create(Require po) {
    ObjectMapper objectMapper = JackJsonUtil.getMapperInstance(false);
    RequireDetailVO vo = new RequireDetailVO();

    vo.setId(po.getId());// ww  w  . java 2  s  . c  o m

    SkillTag industry = po.getIndustry();
    if (null != industry) {
        vo.setIndustryId(industry.getId());
        vo.setIndustryName(industry.getTagName());
    }

    vo.setTitle(po.getTitle());
    vo.setInfo(po.getInfo());

    if (null == po.getBudget()) {
        vo.setBudget("-1"); // -1 - ?
    } else {
        vo.setBudget(new BigDecimal(po.getBudget()).setScale(1, BigDecimal.ROUND_HALF_UP).toString());
    }

    vo.setCreateDate(new DateTime(po.getCreateDate()).toString("yyyy-MM-dd HH:mm:ss"));

    if (StringUtils.isNotBlank(po.getTags())) {
        try {
            @SuppressWarnings("unchecked")
            List<String> readValue = objectMapper.readValue(po.getTags(), List.class);
            vo.setTags(readValue);
        } catch (IOException e) {
            throw new RuntimeException(e);
        }
    }

    Iterator<AttachOfRequire> iterator = po.getCaseAttachs().iterator();
    while (iterator.hasNext()) {
        AttachOfRequire attachOfRequire = iterator.next();
        HashMap<String, Object> pair = new HashMap<String, Object>();
        pair.put("attachId", attachOfRequire.id);
        pair.put("filename", attachOfRequire.fileName);
        pair.put("url", Assets.at(attachOfRequire.path));
        vo.getAttachs().add(pair);
    }

    Expert ownerExpert = po.getOwner().getExperts().iterator().next();
    vo.setOwner(User.create(ownerExpert));

    return vo;
}

---

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