Java: Decimal Format to Create Custom Output Easily
The Decimal Format class is a poorly explained class in the Java Documentation, so I will clear up a little of it with an example.
You first need to import the DecimalFormat class:
Then create a format object. This object can be used with doubles, as it uses a decimal. It uses a template String to teach Java how to ouput the objects.
*This example will be used as a standard format of money:
DecimalFormat money = new DecimalFormat("$0.00");
Now that you have a money object (declared either globally or locally) you can now format your objects.
*Note: This example uses only two decimal places and a $, but any symbols or length is available.
As an example of printing a double value:
double amount = 4.333333333;
What will be printed is $4.33 as described by the template. This handles your precision and dollar sign with a single template.
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-William. § (marvin_gohan)
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