Why doesn't 0.1 + 0.2 equal 0.3 in Java? Trying BigDecimal for monetary calculations

I added 0.1 and 0.2 to check if they equal 0.3, but it returned false. The formula should be correct, so why?This is a ...
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Evaluate Java expressions with operators

Here's everything you need to know about Java operators and operator types, and how to use them to write expressions for your Java programs. In this tutorial, you will learn how to write expressions ...