Conversion from Long to Double in Java

Question

Is there any way to convert a Long data type to Double or double   For example  I need to convert 15552451L to a double data type

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You can try something like this   long x   somevalue   double y   Double longBitsToDouble x

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Simple casting   double d    double 15552451L

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Are you looking for the binary conversion   double result   Double longBitsToDouble 15552451L     This will give you the double with the same bit pattern as the long literal   Binary or hexadecimal literals will come in handy  here  Here are some examples   double nan   Double longBitsToDouble 0xfff0000000000001L   double positiveInfinity   Double longBitsToDouble 0x7ff0000000000000L   double positiveInfinity   Double longBitsToDouble 0xfff0000000000000L      See Double longBitsToDouble long    You also can get the long back with  long bits   Double doubleToRawLongBits Double NaN      See Double doubleToRawLongBits double

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Long i   1000000  String s   i       Double d   Double parseDouble s   Float f   Float parseFloat s     This way we can convert Long type to Double or Float or Int without any problem because it s easy to convert string value to Double or Float or Int

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What do you mean by a long date type   You can cast a long to a double   double d    double  15552451L

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You could simply do    double d    double 15552451L    Or you could get double from Long object as    Long l   new Long 15552451L   double d   l doubleValue

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As already mentioned  you can simply cast long to double  But be careful with long to double conversion because long to double is a narrowing conversion in java    Conversion from type double to type long requires a nontrivial translation from a 64-bit floating-point value to the 64-bit integer representation  Depending on the actual run-time value  information may be lost   e g  following program will print 1 not 0      long number   499999999000000001L      double converted    double  number      System out println  number -  long  converted

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I think it is good for you   BigDecimal valueOf  LONG VALUE   doubleValue    How about this code   D

[java] Conversion from Long to Double in Java

Examples related to java

Examples related to type-conversion