One example is the java.lang.Math class. I will introduce these types in future Java 101 tutorials. For now, I suggest reading the JDK 12 API documentation to learn more about them.

For example, suppose package physics contains a Math class that’s identical to java.lang‘s Math class in that it implements the same PI constant and trigonometric methods.

When running Java applications on the latest Open JDK 9 release and source builds, the JVM enables hardware-based FMA intrinsics for those processors where FMA instructions are available. FMA ...