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Java SimpleDateformatter with 10 decimals after the seconds, cannot convert to Date


Java SimpleDateformatter with 10 decimals after the seconds, cannot convert to Date

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Java SimpleDateformatter with 10 decimals after the seconds, cannot convert to Date
Tag : java , By : Novi Indrayani
Date : November 25 2020, 07:06 PM

Hope this helps There are multiple problems at the moment. I'd strongly recommend using java.time for as much work as possible, although even that doesn't make this easy.
As you say, your value has 10 digits for "fraction of a second" - which means it goes down to 10th-of-a-nanosecond precision. That's highly unusual to start with, in my experience - and I don't think Java can handle that, even with java.time.
// Note this only has 9 digits of precision, not the original 10
String text = "2018-11-02 6:05:59.154116215 PM";
ZoneId zone = ZoneId.of("Asia/Colombo");
DateTimeFormatter formatter = DateTimeFormatter.ofPattern(
    "yyyy-MM-dd h:mm:ss.SSSSSSSSS a", Locale.US)
    .withZone(zone);
ZonedDateTime parsed = ZonedDateTime.parse(text, formatter);
System.out.println(parsed);
Date date = Date.from(parsed.toInstant());

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How to convert a String with decimals to BigDecimal and keep the decimals, in Talend Java?


Tag : java , By : user142345
Date : March 29 2020, 07:55 AM
will help you I'm creating a Job in Talend to transform data from a .csv file using some data from a database and then incorporate into another .csv file. During the transformation some calculation is needed to be performed on the values: , You can use BigDecimal
BigDecimal v1 = new BigDecimal("15.25");
BigDecimal v2 = new BigDecimal("5.25");
BigDecimal v3 = new BigDecimal("1.15");

BigDecimal v123 = v1.divide(v2, MathContext.DECIMAL64).multiply(v3);

System.out.println(v123);
System.out.println(v123.setScale(2, RoundingMode.HALF_UP));
3.34047619047619075
3.34
double v1 = 15.25;
double v2 = 5.25;
double v3 = 1.15;
double v123 = v1 / v2 * v3;
System.out.println(v123);
System.out.printf("%.2f%n", v123);
3.34047619047619
3.34
3.340476190476190476190476190476191

How to convert decimal timestamp to date in Java with trailing decimals


Tag : java , By : Sebastian Gift
Date : March 29 2020, 07:55 AM
I hope this helps you . I have been trying to figure out how to convert a timestamp to a date but with the trailing decimals at the end, so for example: Timestamp - C50204EC EC42EE92 is equivalent to Sep 27, 2004 03:18:04.922896299 UTC. , java.time
Using the example from the explanation:
    Instant epoch = OffsetDateTime.of(1900, 1, 1, 0, 0, 0, 0, ZoneOffset.UTC).toInstant();

    BigInteger timeStamp = new BigInteger("C50204ECEC42EE92", 16);

    // To get the whole part and the fraction right, divide by 2^32
    double secondsSince1900 = timeStamp.doubleValue() / 0x1_0000_0000L;

    // Convert seconds to nanos by multiplying by 1 000 000 000
    Instant converted = epoch.plusNanos(Math.round(secondsSince1900 * 1_000_000_000L));
    System.out.println(converted);
    BigDecimal timeStamp = new BigDecimal(new BigInteger("C50204ECEC42EE92", 16));

    // To get the whole part and the fraction right, divide by 2^32
    BigDecimal bit32 = new BigDecimal(0x1_0000_0000L);
    BigDecimal secondsSince1900 = timeStamp.divide(bit32);

    // Convert seconds to nanos by multiplying by 1 000 000 000; round to long
    long nanosSince1900 = secondsSince1900.multiply(new BigDecimal(TimeUnit.SECONDS.toNanos(1)))
            .setScale(0, RoundingMode.HALF_UP)
            .longValueExact();

    Instant converted = epoch.plusNanos(nanosSince1900);

Convert Epoch seconds to date and time format in Java


Tag : java , By : pjkinney
Date : March 29 2020, 07:55 AM

Code to convert seconds to Date and time combination in java


Tag : java , By : Waynew
Date : March 29 2020, 07:55 AM

Convert LocalTime for given zone to unix epoch seconds without the date component in java


Tag : java , By : user158193
Date : March 29 2020, 07:55 AM
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