java - how do I import org.apache.commons.lang3.ArrayUtils; into Eclipse -


how import:

org.apache.commons.lang3.arrayutils

library new project within eclipse development environment. there package manager can use or need download dll or binary , reference somehow within codebase?

i have seen similar questions none goes step step explain how 1 can import library eclipse.

first of all, should have project. right click eclipse project project or package explorer

properties -> java build path -> libraries

from here select:

  1. 'add jar' if jar within project
  2. 'add external jar' if on file system
  3. 'add variable', if have configured variable in eclipse points directory containing jar files or jar file (see how configure variables below)
  4. 'add library' if have configured jars library (see below library configuration)
  5. 'add class folder' if have bunch of classes in directory should used classes/resources part of 1 of projects
  6. 'add class folder' if have bunch of classes in directory should used classes/resources in file system

configuring variables:
eclipse select menu: window -> preferences -> java -> build path -> classpath variables

select new , give name , select file or folder

configuring libraries:

eclipse select menu: window -> preferences -> java -> build path -> user libraries -> new

provide name , in can add jars within project or file system how mentioned above.


note: in cases, might convenient allow build tools gradle or maven or ant ivy manage dependencies project (when mean dependencies mean libraries) project have few hundred jars dependencies, , manually managing them might painful. these build tools have functionality of downloading jars , sources automatically adding entry in file , caching later use.

see https://gradle.org/ gradle
see https://maven.apache.org/ maven


Comments

Post a Comment

Popular posts from this blog

node.js - Using Node without global install -

i'm working on few node & electron (atom shell) projects , i'm curious how them work without user having install node globally. i've seen few applications including node directory in project contains node.exe binary. how go setting node project use binary? edit: thought should add, i've searched everywhere answer this, unrelated results.
Read more

How to access a php class file from PHPFox framework into javascript code written in simple HTML file? -

i've website developed using phpfox v3.0.7 . now i'm trying implement 'sse(server sent events)' 1 of php files. reference i'm giving below necessary code part of file. file titled process.class.php , present @ location /var/www/module/notification/include/service/process.class.php present on server having ip http://34.124.40.142/ . <?php /** * [phpfox_header] */ header('content-type: text/event-stream'); header('cache-control: no-cache'); defined('phpfox') or exit('no dice!'); /** * * * @copyright [phpfox_copyright] * @author raymond benc * @package phpfox_service * @version $id: service.class.php 67 2009-01-20 11:32:45z raymond_benc $ */ class notification_service_process extends phpfox_service { /** * class constructor */ public function __construct() { $this->_stable = phpfox::gett('notification'); } public function add($...
Read more

java - Null response to php query in android, even though php works properly -

Image
table i'm trying retrieve above data using 2 php files below. want pass email parameter , return bets user = email. work fine when tested advanced rest client, problem not php. however, when try through android 2 java classes below, null pointer exception (logcat below) , json object returned null. i'm not sure error is, think i'm not passing parameter php , that's why it's producing null response. logcat 05-31 15:10:50.227 26074-26074/com.example.albert.betterapp e/androidruntime﹕ fatal exception: main process: com.example.albert.betterapp, pid: 26074 java.lang.runtimeexception: unable start activity componentinfo{com.example.albert.betterapp/com.example.albert.betterapp.displayallbets}: java.lang.nullpointerexception @ android.app.activitythread.performlaunchactivity(activitythread.java:2292) @ android.app.activitythread.handlelaunchactivity(activitythread.java:2350) @ android.app.activitythread.acce...
Read more