Category: Java

Java is the foundation for virtually every type of networked application and is the global standard for developing and delivering embedded and mobile applications, games, Web-based content, and enterprise software. With more than 9 million developers worldwide, Java enables you to efficiently develop, deploy and use exciting applications and services.
From laptops to datacenters, game consoles to scientific supercomputers, cell phones to the Internet, Java is everywhere!

97% of Enterprise Desktops Run Java
89% of Desktops (or Computers) in the U.S. Run Java
9 Million Java Developers Worldwide
#1 Choice for Developers
#1 Development Platform
3 Billion Mobile Phones Run Java
100% of Blu-ray Disc Players Ship with Java
5 Billion Java Cards in Use
125 million TV devices run Java
5 of the Top 5 Original Equipment Manufacturers Ship Java ME

How to Sort an Array in Java with Examples

In the tutorial, we will discuss how to Sort an Array with Java in ascending and descending order. java.util.Arrays class provides a lot of Methods to sort an Array with difference types:

  • With Primitives Array, We use the method such as: static void sort(int[] a).
  • With String or Objects Array that implement Comparable, We use method: static void sort(Object[] a).
  • With Custom Object Array that no implement Comparable, We use method: sort(T[] a, Comparator< ? super T> c).

Let’s do more details with Java Array Sorting.

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Java – Convert Excel File to/from JSON (String/File) – using Apache Poi + Jackson

In the tutorial, Grokonez shows how to convert Excel File to JSON String or JSON File and vice versa with Java language by examples.

[Continue reading…] “Java – Convert Excel File to/from JSON (String/File) – using Apache Poi + Jackson”

Java – Convert CSV File to/from JSON (String/File) – using Commons-CSV + Jackson

In the tutorial, Grokonez shows how to convert CSV File to JSON String or JSON File and vice versa with Java language by examples.

[Continue reading…] “Java – Convert CSV File to/from JSON (String/File) – using Commons-CSV + Jackson”

Java 8 – Sort Map by Value, by Key – Sort Map Custom Object by CompareTo – Descending & Ascending Order

In the tutorial, we show how to sort Java Map by Values, by Keys, and Custom Objects with Descending & Ascending order in Java 8.

[Continue reading…] “Java 8 – Sort Map by Value, by Key – Sort Map Custom Object by CompareTo – Descending & Ascending Order”

How to Install Maven on Windows

In the tutorial, we show how to install Maven on Windows.

Environment:
– Windows 10
– Java 10
– Lastest Maven 3.5.4

Related posts:
– Maven Introduction – Part 1
– Maven Introduction – Part 2: Maven Repositories and Plugins
– Part 3: Maven Dependency Mechanism
– Maven Introduction – Part 4: Maven Build LifeCycle
– Unit Test – Maven skip test with SpringBoot

[Continue reading…] “How to Install Maven on Windows”

Compress String with Run Length Encoding in Java

In this Java example, we’re gonna know how to compress String in Java with Run Length Encoding (RLE) method.

Related Posts:
– Java Regular Expression Overview – Syntax
– Java Regular Expression to extract data from a Text
– Java Regular Expression to mask information from a Text

[Continue reading…] “Compress String with Run Length Encoding in Java”