All of these variables should be designated 'final private double' which will prevent the value from ever being modified. For example, the multiplying factor between inches and meters is 0.0254, so it may be helpful to create a variable for this value. 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. 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. 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. You will be able to create and use the program nonetheless. You also may find it difficult to fully understand what is happening in the code if you do not have a basic understanding of the Java programming language.
Before you start the tutorial, you will want to make sure you download Eclipse, which is an Integrated development environment (IDE) where you will create and run your finished code. This tutorial will take you about 10-15 minutes to complete. A full list of unit conversions is available at. Select the current unit in the left column, the desired unit in the right column, and enter a value in the left column to generate the resulting conversion. Use this Conversion Calculator to convert between commonly used units. There are are over 20 complete units of measure and conversions can be done in as little as one line.
We created a library, UnitOf, for Java, JavaScript, and C# to easily perform these measurement conversions. Unidata now publishes the java units conversion library from netcdf-java as a standalone package. This can be useful when you need a quick method of converting from one unit to another, especially when you do not have internet access. In this tutorial, you will learn how to create a unit- converting Java program.
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