upd java-collection-libs.md

docs/wiki/Lang-Java/java-collection-libs.md

@@ -10,16 +10,18 @@ tags:
 ## Overview
 
 - *Popular*
-  - [Java Collections Framework](https://docs.oracle.com/en/java/javase/21/docs/api/java.base/java/util/package-summary.html) is a standard
-  - [Apache Commons Collections](https://github.com/apache/commons-collections)
-  - [Guava](https://github.com/google/guava)
-  - [Eclipse Collections](https://github.com/eclipse/eclipse-collections)
+  - [**Java Collections Framework**](https://docs.oracle.com/en/java/javase/21/docs/api/java.base/java/util/package-summary.html)
+  - [**Apache Commons Collections**](https://github.com/apache/commons-collections)
+  - [**Guava**](https://github.com/google/guava)  is a set of core Java libraries from Google that includes new collection types (such as multimap and multiset), immutable collections, a graph library, and utilities for concurrency, I/O, hashing, primitives, strings, and more! It is widely used on most Java projects within Google, and widely used by many other companies as well.
+  - [**Eclipse Collections**](https://github.com/eclipse/eclipse-collections)
+  - [**fastutil**](https://fastutil.di.unimi.it) extends the Java Collections Framework by providing type-specific maps, sets, lists, and queues with a small memory footprint and fast access and insertion; it provides also big (64-bit) arrays, sets, and lists, sorting algorithms, fast, practical I/O classes for binary and text files, and facilities for memory mapping large files.
+  - [**JCTools**](https://github.com/JCTools/JCTools) Java Concurrency Tools for the JVM. This project aims to offer some concurrent data structures currently missing from the JDK.
 - *Graph*
   - [**JGraphT**](https://github.com/jgrapht/jgrapht) is Java class library that provides mathematical graph-theory objects and algorithms
   - [**JUNG**](https://github.com/jrtom/jung) is the Java Universal Network/Graph Framework
 - *Persistent collections*
   - [**vavr**](https://github.com/vavr-io/vavr) provides persistent collections, functional abstractions for error handling, concurrent programming, pattern matching and much more
 - *Personal*
-  - [**kevin-wayne/algs4**](https://github.com/kevin-wayne/algs4/) repo is "Algorithms", 4th edition textbook code and libraries
+  - [**kevin-wayne/algs4**](https://github.com/kevin-wayne/algs4/) is a repo for "Algorithms" 4th edition book's code and libraries
   - [**java-algorithms-implementation**](https://github.com/phishman3579/java-algorithms-implementation) sample algorithms and data structures implemented in Java
   - [**williamfiset/Algorithms**](https://github.com/williamfiset/Algorithms) is a collection of algorithms and data structures

docs/wiki/misc/cheatsheets.md

@@ -27,7 +27,6 @@ Just collection of cheatsheets.
 - by Robert Sedgewick and Kevin Wayne:
   - [Java Programming Cheatsheet](https://introcs.cs.princeton.edu/java/11cheatsheet/) - just nice and clean Java lang cheatsheet
   - [Algorithms and Data Structures Cheatsheet](https://algs4.cs.princeton.edu/cheatsheet/) - code samples are in Java
-- [Java Collections Cheat Sheet](https://www.jrebel.com/blog/java-collections-cheat-sheet) by JRebel, also there is one-page PDF
 - [Cheat Sheet on Java Collection by Tushar Ghosh](https://tusharghosh09006.medium.com/cheat-sheet-on-java-collection-709ca96edc9d)
 - [Java cheat sheet for interview](https://github.com/jsjtzyy/LeetCode/blob/master/Java%20cheat%20sheet%20for%20interview)
 - [Java interview Cheatsheet](https://yungnickyoung.github.io/Java-Cheatsheet/) - it's focusing on fundamentals and useful interview tips