In this tutorial, you’ll learn about generics and see three examples of using them with the Java Collections Framework. ... This example shows a HashMap that maps String keys to Integer values.

To find the size of a Java array, query an array’s length property. The Java array size is set permanently when the array is initialized. The size or length count of an array in Java includes both ...

Parent.java. This class serves as a parent class for the rest of the classes in the example. It also demonstrates ToStringBuilder.reflectionToString(Object).This method allows one to take ...