Since the introduction of the Java Collections Framework with JDK 1.2 , ... Java arrays employ C-like zero-based indexes and so using an index of 0 obtains the first element.

How to create an array in Java. The word “array” is defined as a data structure, consisting of a collection of elements. These elements must be identified by at least one “index” or “key.” ...

Java Garbage Collection remains a topic of major interest even after 25 years. Many developers are still confused about the fundamentals of the topic, even of the most widely-used implementation ...

Here are the most important concepts developers must know when they size Java arrays and deal with a Java array’s length: The theoretical maximum Java array size is 2,147,483,647 elements. To find the ...

-XX:+PrintGCDetails instructs the JVM to print out detailed garbage collection logs to help you with GC optimization.-XX:+PrintFlagsFinal -version prints out all of the currently configured flags and ...

Apache Collections supports generics, so that's not a reason to choose one over the other. If the collections you need are available in it, I'd probably lean towards Guava, though.