Java Tutorial Archives •

How To Fix Java.Lang.NoClassDefFoundError: Javax/xml/bind/annotation/xmlschema When Install Android SDK

5 Comments / Java Tutorial / January 18, 2021 January 18, 2021 / jdk

When I install android SDK use android SDK manager, it throws an error exception in thread “main” java.lang.noclassdeffounderror: javax/xml/bind/annotation/xmlschema . It cost me a lot of time to investigate. Now I will tell you how to fix it in detail.

How To Create Virtual Machine Instance And Install ShadowSocks Server On Oracle Always Free Cloud

Leave a Comment / Java Tutorial / November 30, 2019 August 19, 2020 / Virtual Machine

Oracle cloud provide an always free service for virtual machine, database and network creation & usage. It is a very good news because of free usage. This article will tell you how to register oracle always free cloud account and how to create virtual machine instance in it, it also tell you how to setup …

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How To Install / Uninstall Multiple Java Versions In Mac OS By Home Brew Or Manually

3 Comments / Java Tutorial, Mac Tutorial / June 4, 2019 January 18, 2021 / Java Home, jdk

This article will tell you how to install / uninstall multiple java versions on mac os both use home brew or manually. It also show you how to set JAVA_HOME & PATH system environment variable to make your installed jdk as the default jdk. We recommend you to use home brew, because it provide a …

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How To Install Java Jdk And Scala On Ubuntu Linux, Windows, MacOS

2 Comments / Java Tutorial / May 9, 2019 May 9, 2019 / Scala

Scala is based on java virtual machine, so if you want to learn scala programming, you need first install jdk, then install scala. This article will tell you how to install jdk and scala on both ubuntu linux, windows and macos.

How To Connect Localhost Apache James With Thunderbird

1 Comment / Java Tutorial / December 12, 2018 December 17, 2018 / Apache James

Apache James is a popular open source mail server. It support both SMTP, POP3 and IMAP protocol. This article will tell you how to install Apache James both on Windows and Linux, how to create user account on it and how to use free email client tool Thunderbird to connect to it to send and …

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Resolve Spring Boot JPA Table ‘dbname.hibernate_sequence’ Doesn’t Exist Error

Leave a Comment / Java Tutorial / December 5, 2018 December 5, 2018

In my recent spring boot example project, i use spring boot data JPA to operate MySQL server table. And when i invoke the CrudRepository’s save method to implement insert action to the table, it shows below error, the error message is “table ‘dev2qa_example.hibernate_sequence’ doesn’t exist”. This error cost me some time to fix, and i …

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How To Auto Import All Java Classes In Eclipse

Leave a Comment / Java Tutorial / November 28, 2018 November 28, 2018 / Eclipse

When you develop java project in eclipse, of course you want to make class import automatically when you type a class name, especially when you copy & paste huge java source code to you java file. This article will tell you how to import java class automatically in eclipse.

How To Enable Group Policy Editor ( gpedit.msc ) In Win 10 Home Edition

1 Comment / Java Tutorial / November 7, 2018 November 7, 2018 / Win10

Group policy editor (gpedit.msc) is a very useful windows function that are needed when enable windows long file path feature. It has been installed and enabled in win 10 professional and enterprise edition by default. But when you run it in win 10 home edition, it will prompt error message like Windows cannot find ‘gpedit.msc’, …

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How To Solve Eclipse Building Workspace Too Slow Problem

3 Comments / Java Tutorial / October 29, 2018 October 29, 2018 / Eclipse

When you develop java project use eclipse, you may find that eclipse project run so slowly, this can even stop your work, you can do nothing but wait for eclipse project build or download maven jar files. This article will tell you some tips about how to avoid eclipse run slowly issue.

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How To Create, Debug Java Project In Visual Studio Code

Leave a Comment / Java Tutorial / October 22, 2018 October 22, 2018 / Visual Studio Code

Visual studio code is an open source lightweight code editor provided by Microsoft. It is not a heavyweight IDE, it is just a platform and startup very quickly. But it can support any coding languages develop and debugging through it’s extension. And there are so many extensions in visual studio code marketplace. And as time …

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