Eclipse configures hadoop development environment

Hadoop stepping on the pit (3) Eclipse configures hadoop development environment Environmental Science windows 10 java 1.8 Namenode (Hadoop 1-ali) alicloud (CentOS 7.3) 120.26.173.104 hadoop version 2.8.5 Eclipse installation Enterprise version needs to be installed. For network reasons, offline installation package is recommended https://www.e ...

Posted by Duodecillion on Sun, 28 Jun 2020 22:17:50 -0700

I found an IDEA BUG by debugging concurrent linkedqueue. Eclipse has no problem

This slag wants to analyze Doug Lea's idea of writing high concurrency code, so I found our leading actor, concurrent linked queue, to whip it. To tell you the truth, I've finished all the drafts, but I've almost got a kick in the door Looking at the problem directly, the results of running idea in Debug and non Debug modes are different How d ...

Posted by prbrowne on Sun, 28 Jun 2020 22:18:23 -0700

I found a bug in IDEA by debugging concurrent linkedqueue, and vscode is duplicated. eclipse has no problem

This slag wants to analyze Doug Lea's idea of writing high concurrency code, so I found our leading actor, concurrent linked queue, to whip it. To tell you the truth, I've finished all the drafts, but I've almost got a kick in the door If you look at the problem directly, the result of idea running i ...

Posted by subalan on Sun, 28 Jun 2020 21:18:57 -0700

java calls SMS interface to send SMS

java calls SMS interface to send SMS 1. Download interface file 2. Open the java folder 2.1 Getting jar package dependencies 2.2 Getting Code Templates 3. Create a project 3.1 Open eclipse software to create a dynamic web project 3.2 Import jar package dependencies 3.3 Tool classes required to create package i ...

Posted by brickstermike on Wed, 24 Jun 2020 18:59:47 -0700

University Physics open source

Article catalog Constant table Interface Verbal description.java Brain teaser.java Chapter 16 Charge.java Electric field.java Chapter 17 Electric potential energy.java Equipotential surface.java Potential.java Capacitance.java Dielectric.java Chapter 18 Current.java Electric power.java Resista ...

Posted by varghesedxb on Wed, 24 Jun 2020 01:31:14 -0700

Java knowledge summary 1 - Java program foundation

1.1 Java introduction What is Java Java is a programming language developed by James Gosling of SUN (acquired by Oracle) in the early 1990s. It was officially released in 1995. Java is a cross platform language based on JVM Programming languages are compiled and interpreted. Compiled languages suc ...

Posted by Kurt on Sun, 21 Jun 2020 22:09:13 -0700

GUI programming of P3:Java

GUI Objects provided by Java for GUI exist java.awt And javax.swing In two bags The product of Java graphical interface: eclipse is written in pure Java language. So this software does not need to be installed, but at least jre(Java language program running environment) 1. AWT and Swing java.aw ...

Posted by Katanius on Mon, 08 Jun 2020 23:38:11 -0700

Using Spring Shell to quickly develop your own command interaction window

Spring Shell Sometimes, in order to facilitate the development and testing of the server, it does not need a beautiful user interface, just use a simple command window. As follows: Here is a quick, convenient, easy-to-use and simple interactive command window development component Spring Shell Yes, it's in spring ecology again. Source address ...

Posted by AlexP on Wed, 27 May 2020 21:09:04 -0700

main start Jetty Server web project

main start Jetty Server mode 1, web engineering starts jetty server through main 1.JettyServerLauncher import org.eclipse.jetty.server.Server; import org.eclipse.jetty.webapp.WebAppContext; public class JettyServerLauncher { private static final int DEFAULT_PORT = 8080; private static final String DEFAULT_WEBAPP = "WebRoot"; priv ...

Posted by orionellis on Fri, 01 May 2020 14:22:37 -0700

Running JUnit 5 test cases in Maven project

This article demonstrated how to write JUnit 5 test cases and run JUnit 5 test cases in Maven project. Write JUnit 5 test cases If you're a java developer, JUnit should be familiar. JUnit is the basic tool for Java unit testing. At present, the latest version of JUnit is JUnit 5.x, but most Java developers are still in JUnit 4.x, so it is neces ...

Posted by xylex on Thu, 16 Apr 2020 09:26:50 -0700