In Java an array is a way of storing multiple items of the same type. ... An array is a container object that holds a finite number of values of a specific type.

Before printing the ArrayList, ... However, the Java Platform provides a data structure that greatly simplifies the use of reference objects like this, called the java.util.WeakHashMap class.

Java supports arrays. Each element occupies the same number of bytes, and the exact number depends on the type of the element’s data item. Furthermore, all elements share the same type.