Metric Conversion Calculator. Conversion-metric.org is an online conversion tool which helps you to convert Metric and Imperial units easily. Start conversion by selecting unit type.
Arbitrary Conversion Factor
Inside of your LengthConverter class, create an instance variable that will serve as the factor between meters and any other length measurement. Let's name this variable factor so that it may be referred to later in this tutorial. This variable should be designated “private” for code security and “double” due to the fact that it will likely be a floating point number.
Other Instance Variables
The only other instance variables you may want to implement in this class would be ones that hold the actual numeric values of the factors between meters and another length measurement. For example, the multiplying factor between inches and meters is 0.0254, so it may be helpful to create a variable for this value. All of these variables should be designated 'final private double' which will prevent the value from ever being modified.
Example:
final private double INCH_TO_METER = 0.0254
Note:
You must look up the conversion factors between meters and any other units of length you wish to account for.
Inside of your LengthConverter class, create an instance variable that will serve as the factor between meters and any other length measurement. Let's name this variable factor so that it may be referred to later in this tutorial. This variable should be designated “private” for code security and “double” due to the fact that it will likely be a floating point number.
Other Instance Variables
The only other instance variables you may want to implement in this class would be ones that hold the actual numeric values of the factors between meters and another length measurement. For example, the multiplying factor between inches and meters is 0.0254, so it may be helpful to create a variable for this value. All of these variables should be designated 'final private double' which will prevent the value from ever being modified.
Example:
final private double INCH_TO_METER = 0.0254
Note:
You must look up the conversion factors between meters and any other units of length you wish to account for.
Active1 year, 2 months ago
I have an application that will need to perform a number of unit conversions (metric to Imperial, Imperial to metric).
Is there an existing Java library that does this? Or will I need to roll my own? (My initial Google searches proved moderately useless.)
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4 Answers
there is a specific JSR 275 (javax.measure) with JScience as RI (Reference Implementation). For example converting 100 Miles to kilometers is easy as:
(note that units are all type safe a compile-time, a killer feature imho)
The reverse can be easy:
or supereasy as:
NB imports:
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We created a library, UnitOf, for Java, JavaScript, and C# to easily perform these measurement conversions. There are are over 20 complete units of measure and conversions can be done in as little as one line.
UnitOf also gives the ability to parse data types, convert to and from fractions, and even create your own custom UnitOf measurements.
![Metric conversion calculator Metric conversion calculator](/uploads/1/2/5/3/125381703/497704948.jpg)
DigidemicDigidemic
Adding to the pile..
Unidata now publishes the java units conversion library from netcdf-java as a standalone package.
Standard To Metric Conversion Calculator
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I have found Java Unit Conversion library at SourceForge, but I have not yet tried it (I will need similar funcionality in near future). It is licensed as BSD license. It might help.
Martin VondráčekMartin Vondráček