Ben Chuanlong Du's Blog

It is never too late to learn.

Date and Time in Java and Scala

Things on this page are fragmentary and immature notes/thoughts of the author. Please read with your own judgement!

Use Joda time if you are using JDK <= 7 and java.time if you are using JDK8 and above.

If you do prefer Scala libraries (when working in Scala), https://github …

Tips on Maven

Things on this page are fragmentary and immature notes/thoughts of the author. Please read with your own judgement!

The Central Repository

$HOME/.m2

maven: shade plugin, scala compile plugin, exclude manifest files, ...

import as maven project ...

find an updated version of scala archetype for maven

mvn package  
mvn clean …

Common Errors Encountered in Scala and Solutions

Things on this page are fragmentary and immature notes/thoughts of the author. Please read with your own judgement!

  1. Java Version Issue

    Unsupported major minor version

    https://stackoverflow.com/questions/22489398/unsupported-major-minor-version-52-0

java.lang.NoSuchMethodError: scala.Product.\(init\)

Fixing the Scala error: java.lang.NoSuchMethodError: scala.Product.\(init\)

It probably …

Maven Dependencies

Things on this page are fragmentary and immature notes/thoughts of the author. Please read with your own judgement!

Properties

<properties>
  <scala.version>2.11.11</scala.version>
</properties>

Dependencies

Unit Test

<dependency>
    <groupId>junit</groupId>
    <artifactId>junit</artifactId>
    <version>4.11</version>
    <scope>test</scope>
</dependency>

specs

<dependency>
    <groupId …