Sort Map by Key or Value

https://www.mkyong.com/java/how-to-sort-a-map-in-java/

CompareTo and Comparator

https://www.geeksforgeeks.org/comparable-vs-comparator-in-java/ #compareTo #comparator

Elasticsearch Cheat Sheet

http://elasticsearch-cheatsheet.jolicode.com/ #Elasticsearch

Spring Boot Performance

https://stormpath.com/blog/5-practical-tips-for-building-your-spring-boot-api

Hashtable vs. ConcurrentHashMap vs. SynchronizedMap

https://stackoverflow.com/questions/12646404/concurrenthashmap-and-hashtable-in-java ConcurrentHashMap uses multiple buckets to store...

Java 8 Stream

http://java.amitph.com/2014/01/understanding-java-8-streams-api.html http://www.oracle.com/technetwork/articles/java/ma14-java-se-8-strea...

Java "for" loop vs "stream" (1)

(https://dzone.com/articles/performance-with-java8-streams) In Java8 Streams, performance is achieved by parallelism, laziness, and using...

Spring Annotations

https://springframework.guru/spring-framework-annotations/

Java Time/Date Conversion

1. Java Calendar Calendar now = Calendar.getInstance(TimeZone.getTimeZone("GMT")); // get the supported ids for GMT-08:00 (Pacific...

Install Sense in Chrom

https://stackoverflow.com/questions/47027494/elasticsearch-sense-chrome-plugin-disabled-need-to-get-dsl-queries-written-in-c #Sense...

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