Lewis Coosner

Lewis explains ThreadLocal Variables in Java.

Escaping object references can become an issue with concurrent running threads.

How do we choose a float data type over a double to represent a value? And once we’ve chosen one over the other, how will it affect the speed of our application? Is a float faster than a double, or vice versa?

Lewis explains why you should never compare floating point numbers for equality.

A quick overview of the primitive floating point types in Java, and how to print the mantissa and exponent.

Lewis looks at how floating point numbers are represented in computer memory, and introduces the problem of quantitization error.

Lewis explains how integral numbers are represented in computer memory. Java has four primitive integral data types.

Programmers need to understand how numbers are represented in computer memory. This knowledge is useful during debugging. Lewis starts with a recap of how positional numbering works.

Lewis discusses default, static and private methods in Java interfaces.

Lewis introduces a new enhancement in Java: statements before super()