Knowledge Base

Main page

Why do I need Java?

In order to access the simulation tools, you must have Java version 1.4 or later installed on your machine and enabled in your web browser. Note that Java is not the same as Javascript. Visit the Java website to verify which version of Java is installed on your browser. You can also upgrade to the latest release of Java. If you do not have access to install plug-ins, please contact your system administrator about installing or upgrading your Java.

Known Issues

  • KDE Konqueror
    To enable Java in the KDE Konqueror browser, make sure that the Java preferences are enabled and that Use KIO is checked. In the box that specifies the path to the java executable, simply typing java often works better than the full path to the executable.

0 Dislike

Last updated @ on

Comments on this entry

There are no comments on this entry.

Post a comment

Post a comment

Comments are closed on this entry.

Please keep comments relevant to this entry. Comments deemed offensive or inappropriate may be removed.

Debug Console

Close16 MBRequestSessionTimelineDatabase50Events23
$_GET
Array( ) Array(

)
$_POST
Array( ) Array(

)
$_COOKIE
Array( ) Array(

)
$_SERVER
Array( USER => apache, HOME => /usr/share/httpd, FCGI_ROLE => RESPONDER, REDIRECT_HTTP_AU... Array(
USER => apache,
HOME => /usr/share/httpd,
FCGI_ROLE => RESPONDER,
REDIRECT_HTTP_AUTHORIZATION => ,
REDIRECT_UNIQUE_ID => ZiNjtABxklyAOtXJYhzGwwAAAAk,
REDIRECT_SCRIPT_URL => /kb/misc/java/,
REDIRECT_SCRIPT_URI => https://ielab.info/kb/misc/java/,
REDIRECT_HTTPS => on,
REDIRECT_STATUS => 200,
HTTP_AUTHORIZATION => ,
UNIQUE_ID => ZiNjtABxklyAOtXJYhzGwwAAAAk,
SCRIPT_URL => /kb/misc/java/,
SCRIPT_URI => https://ielab.info/kb/misc/java/,
HTTPS => on,
HTTP_X_FORWARDED_FOR => 3.14.132.214,
HTTP_X_FORWARDED_PROTO => https,
HTTP_X_FORWARDED_PORT => 443,
HTTP_HOST => ielab.info,
HTTP_X_AMZN_TRACE_ID => Root=1-662363b4-3b265dc9133cebd23495bdc5,
HTTP_ACCEPT => */*,
HTTP_USER_AGENT => Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.com),
PATH => /usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin,
SERVER_SIGNATURE => ,
SERVER_SOFTWARE => Apache/2.4.6 (Red Hat Enterprise Linux) OpenSSL/1.0.2k-fips mod_python/3.5.0- Python/2.7.5,
SERVER_NAME => ielab.info,
SERVER_ADDR => 10.84.154.253,
SERVER_PORT => 443,
REMOTE_ADDR => 10.84.154.187,
DOCUMENT_ROOT => /var/www/ielab,
REQUEST_SCHEME => https,
CONTEXT_PREFIX => ,
CONTEXT_DOCUMENT_ROOT => /var/www/ielab,
SERVER_ADMIN => root@localhost,
SCRIPT_FILENAME => /var/www/ielab/index.php,
REMOTE_PORT => 40050,
REDIRECT_URL => /kb/misc/java/,
GATEWAY_INTERFACE => CGI/1.1,
SERVER_PROTOCOL => HTTP/1.1,
REQUEST_METHOD => GET,
QUERY_STRING => ,
REQUEST_URI => /kb/misc/java/,
SCRIPT_NAME => /index.php,
PHP_SELF => /index.php,
REQUEST_TIME_FLOAT => 1713595316.6859,
REQUEST_TIME => 1713595316
)
session.client.forwarded ⇒ 3.14.132.214
separator ⇒ .
orderBy ⇒ id
orderDir ⇒ asc
1 ⇒ registerIP
2 ⇒ access
always ⇒
renew ⇒
tracker.sid ⇒ 046bbdb79eb1957dad621fe30476e456
tracker.ssid ⇒ 046bbdb79eb1957dad621fe30476e456
tracker.rsid ⇒ 046bbdb79eb1957dad621fe30476e456
session.token ⇒ 05f0b85bb0f4932f518c649c8d76749a
  • site 0.041 seconds (+0.041); 9.50 MB (+9.500) - afterInitialise
  • site 0.075 seconds (+0.034); 12.25 MB (+2.750) - afterRoute
  • site 0.106 seconds (+0.032); 14.50 MB (+2.250) - afterDispatch
  • site 0.116 seconds (+0.010); 14.75 MB (+0.250) - beforeRenderModule mod_custom (Hub Footer)
  • site 0.118 seconds (+0.001); 14.75 MB (0.000) - afterRenderModule mod_custom (Hub Footer)
  • site 0.118 seconds (+0.000); 15.00 MB (+0.250) - beforeRenderModule mod_collect (Collect)
  • site 0.119 seconds (+0.001); 15.00 MB (0.000) - afterRenderModule mod_collect (Collect)
  • site 0.119 seconds (+0.000); 15.00 MB (0.000) - beforeRenderModule mod_menu (Community)
  • site 0.120 seconds (+0.001); 15.00 MB (0.000) - afterRenderModule mod_menu (Community)
  • site 0.120 seconds (+0.000); 15.00 MB (0.000) - beforeRenderModule mod_menu (Support)
  • site 0.121 seconds (+0.000); 15.00 MB (0.000) - afterRenderModule mod_menu (Support)
  • site 0.121 seconds (+0.000); 15.00 MB (0.000) - beforeRenderModule mod_menu (Analyse)
  • site 0.121 seconds (+0.000); 15.00 MB (0.000) - afterRenderModule mod_menu (Analyse)
  • site 0.122 seconds (+0.000); 15.00 MB (0.000) - beforeRenderModule mod_breadcrumbs (Breadcrumbs)
  • site 0.126 seconds (+0.004); 15.25 MB (+0.250) - afterRenderModule mod_breadcrumbs (Breadcrumbs)
  • site 0.126 seconds (+0.000); 15.25 MB (0.000) - beforeRenderModule mod_menu (Main Menu)
  • site 0.146 seconds (+0.020); 15.75 MB (+0.500) - afterRenderModule mod_menu (Main Menu)
  • site 0.146 seconds (+0.000); 15.75 MB (0.000) - beforeRenderModule mod_search (Search)
  • site 0.147 seconds (+0.001); 15.75 MB (0.000) - afterRenderModule mod_search (Search)
  • site 0.147 seconds (+0.000); 15.75 MB (0.000) - beforeRenderModule mod_reportproblems (Trouble Report)
  • site 0.149 seconds (+0.002); 15.75 MB (0.000) - afterRenderModule mod_reportproblems (Trouble Report)
  • site 0.151 seconds (+0.002); 15.75 MB (0.000) - onAfterRender
  • site 0.153 seconds (+0.001); 15.75 MB (0.000) - sessionStore
16 MB

50 Queries Logged: 0.015405416488647 seconds

  1. SELECT data
      FROM `jos_session`
      WHERE `session_id` = 'b2a92054dc1065331dbfd055a27aa448'
  2. DELETE
      FROM `jos_session`
      WHERE `session_id` = 'b2a92054dc1065331dbfd055a27aa448'
  3. SELECT data
      FROM `jos_session`
      WHERE `session_id` = '046bbdb79eb1957dad621fe30476e456'
  4. SELECT extension_id AS id,element AS "option",params,enabled
      FROM `jos_extensions`
      WHERE `type` = 'component'
      AND `element` = 'com_languages'
  5. SELECT session_id
      FROM `jos_session`
      WHERE `session_id` = '046bbdb79eb1957dad621fe30476e456'
      LIMIT 1
  6. INSERT INTO `jos_session` (`session_id`,`client_id`,`time`,`ip`)
      VALUES ('046bbdb79eb1957dad621fe30476e456','0','1713595316','10.84.154.187')
  7. SELECT extension_id AS id,element AS "option",params,enabled
      FROM `jos_extensions`
      WHERE `type` = 'component'
      AND `element` = 'com_members'
  8. SELECT b.id
      FROM `jos_usergroups` AS `a`
      LEFT JOIN jos_usergroups AS b
      ON b.lft <= a.lft
      AND b.rgt >= a.rgt
      WHERE `a`.`id` = '1'
  9. SELECT *
      FROM `jos_viewlevels`
  10. SELECT folder AS type,element AS name,protected,params
      FROM `jos_extensions`
      WHERE `enabled` >= '1'
      AND `type` = 'plugin'
      AND `state` >= '0'
      AND `access` IN ('1','1','4')
      ORDER BY `ordering` ASC
  11. SELECT m.id,m.menutype,m.title,m.alias,m.note,m.path AS route,m.link,m.type,m.level,m.language,m.browserNav,m.access,m.params,m.home,m.img,m.template_style_id,m.component_id,m.parent_id,e.element AS component
      FROM `jos_menu` AS `m`
      LEFT JOIN jos_extensions AS e
      ON e.extension_id = m.component_id
      WHERE `m`.`published` = '1'
      AND `m`.`parent_id` > '0'
      AND `m`.`client_id` = '0'
      ORDER BY `m`.`lft` ASC
  12. SELECT extension_id AS id,element AS "option",params,enabled
      FROM `jos_extensions`
      WHERE `type` = 'component'
      AND `element` = 'com_kb'
  13. SELECT extension_id AS id,element AS "option",params,enabled
      FROM `jos_extensions`
      WHERE `type` = 'component'
      AND `element` = 'com_tags'
  14. SELECT extension_id AS id,element AS "option",params,enabled
      FROM `jos_extensions`
      WHERE `type` = 'component'
      AND `element` = 'com_categories'
  15. SELECT *
      FROM `jos_categories`
      WHERE `jos_categories`.`extension` = 'com_kb'
      AND `jos_categories`.`alias` = 'misc'
      AND `jos_categories`.`published` = '1'
  16. SELECT *
      FROM `jos_categories`
      WHERE `jos_categories`.`extension` = 'com_kb'
      AND `jos_categories`.`alias` = 'java'
      AND `jos_categories`.`published` = '1'
  17. SELECT jos_template_styles.id,jos_template_styles.home,jos_template_styles.template,jos_template_styles.params,jos_extensions.protected
      FROM `jos_template_styles`
      INNER JOIN jos_extensions
      ON jos_extensions.element = jos_template_styles.template
      WHERE `jos_template_styles`.`client_id` = '0'
      AND `jos_extensions`.`enabled` = '1'
      AND `jos_extensions`.`type` = 'template'
      AND jos_extensions.`client_id` = `jos_template_styles`.`client_id`
      ORDER BY `home` DESC
  18. SELECT *
      FROM `jos_kb_articles`
      WHERE `jos_kb_articles`.`alias` = 'java'
      AND `jos_kb_articles`.`category` = '20'
  19. SELECT *
      FROM `jos_categories`
      WHERE `jos_categories`.`id` = '20'
  20. SELECT jos_tags_object.label,jos_tags.*
      FROM `jos_tags`
      INNER JOIN jos_tags_object
      ON jos_tags_object.tagid = jos_tags.id
      WHERE `jos_tags_object`.`tbl` = 'kb'
      AND `jos_tags_object`.`objectid` = '13'
      AND `jos_tags`.`admin` NOT IN ('1')
      GROUP BY jos_tags_object.label,jos_tags.id
  21. SELECT category,count(*) AS articles
      FROM `jos_kb_articles`
      WHERE `jos_kb_articles`.`state` = '1'
      AND `jos_kb_articles`.`access` IN ('1','1','4')
      GROUP BY category
  22. SELECT *
      FROM `jos_categories`
      WHERE `jos_categories`.`extension` = 'com_kb'
      AND `jos_categories`.`published` = '1'
      AND `jos_categories`.`access` IN ('1','1','4')
      AND `jos_categories`.`parent_id` = '1'
      ORDER BY `title` ASC
  23. SELECT *
      FROM `jos_categories`
      WHERE `jos_categories`.`parent_id` = '27'
      AND `jos_categories`.`published` = '1'
      AND `jos_categories`.`access` IN ('1','1','4')
  24. SELECT *
      FROM `jos_categories`
      WHERE `jos_categories`.`parent_id` = '26'
      AND `jos_categories`.`published` = '1'
      AND `jos_categories`.`access` IN ('1','1','4')
  25. SELECT *
      FROM `jos_categories`
      WHERE `jos_categories`.`parent_id` = '19'
      AND `jos_categories`.`published` = '1'
      AND `jos_categories`.`access` IN ('1','1','4')
  26. SELECT *
      FROM `jos_categories`
      WHERE `jos_categories`.`parent_id` = '18'
      AND `jos_categories`.`published` = '1'
      AND `jos_categories`.`access` IN ('1','1','4')
  27. SELECT *
      FROM `jos_categories`
      WHERE `jos_categories`.`parent_id` = '20'
      AND `jos_categories`.`published` = '1'
      AND `jos_categories`.`access` IN ('1','1','4')
  28. SELECT *
      FROM `jos_categories`
      WHERE `jos_categories`.`parent_id` = '24'
      AND `jos_categories`.`published` = '1'
      AND `jos_categories`.`access` IN ('1','1','4')
  29. SELECT *
      FROM `jos_categories`
      WHERE `jos_categories`.`parent_id` = '25'
      AND `jos_categories`.`published` = '1'
      AND `jos_categories`.`access` IN ('1','1','4')
  30. SELECT *
      FROM `jos_categories`
      WHERE `jos_categories`.`parent_id` = '21'
      AND `jos_categories`.`published` = '1'
      AND `jos_categories`.`access` IN ('1','1','4')
  31. SELECT *
      FROM `jos_categories`
      WHERE `jos_categories`.`parent_id` = '22'
      AND `jos_categories`.`published` = '1'
      AND `jos_categories`.`access` IN ('1','1','4')
  32. SELECT *
      FROM `jos_categories`
      WHERE `jos_categories`.`parent_id` = '23'
      AND `jos_categories`.`published` = '1'
      AND `jos_categories`.`access` IN ('1','1','4')
  33. SELECT *
      FROM `jos_kb_comments`
      WHERE `jos_kb_comments`.`entry_id` = '13'
      AND `jos_kb_comments`.`state` IN ('1','3')
  34. SELECT *
      FROM `jos_kb_comments`
      WHERE `jos_kb_comments`.`id` = '0'
  35. SELECT extension_id AS id,element AS "option",params,enabled
      FROM `jos_extensions`
      WHERE `type` = 'component'
      AND `element` = 'com_search'
  36. SELECT extension_id AS id,element AS "option",params,enabled
      FROM `jos_extensions`
      WHERE `type` = 'component'
      AND `element` = 'com_users'
  37. SELECT m.id,m.title,m.module,m.position,m.content,m.showtitle,m.params,mm.menuid,e.protected
      FROM `jos_modules` AS `m`
      LEFT JOIN jos_modules_menu AS mm
      ON mm.moduleid = m.id
      LEFT JOIN jos_extensions AS e
      ON e.element = m.module
      AND e.client_id = m.client_id
      WHERE `m`.`published` = '1'
      AND `e`.`enabled` = '1'
      AND (`m`.`publish_up` IS NULL OR `m`.`publish_up` <= '2024-04-20 06:41:56' )
      AND (`m`.`publish_down` IS NULL OR `m`.`publish_down` >= '2024-04-20 06:41:56' )
      AND `m`.`access` IN ('1','1','4')
      AND `m`.`client_id` = '0'
      AND (`mm`.`menuid` = '82' OR `mm`.`menuid` <= '0' )
      ORDER BY `m`.`position` ASC,`m`.`ordering` ASC
  38. SELECT extension_id AS id,element AS "option",params,enabled
      FROM `jos_extensions`
      WHERE `type` = 'component'
      AND `element` = 'com_support'
  39. SELECT extension_id AS id,element AS "option",params,enabled
      FROM `jos_extensions`
      WHERE `type` = 'component'
      AND `element` = 'com_content'
  40. SELECT extension_id AS id,element AS "option",params,enabled
      FROM `jos_extensions`
      WHERE `type` = 'component'
      AND `element` = 'com_newsletter'
  41. SELECT extension_id AS id,element AS "option",params,enabled
      FROM `jos_extensions`
      WHERE `type` = 'component'
      AND `element` = 'com_groups'
  42. SELECT extension_id AS id,element AS "option",params,enabled
      FROM `jos_extensions`
      WHERE `type` = 'component'
      AND `element` = 'com_projects'
  43. SELECT extension_id AS id,element AS "option",params,enabled
      FROM `jos_extensions`
      WHERE `type` = 'component'
      AND `element` = 'com_answers'
  44. SELECT extension_id AS id,element AS "option",params,enabled
      FROM `jos_extensions`
      WHERE `type` = 'component'
      AND `element` = 'com_collections'
  45. SELECT extension_id AS id,element AS "option",params,enabled
      FROM `jos_extensions`
      WHERE `type` = 'component'
      AND `element` = 'com_blog'
  46. SELECT extension_id AS id,element AS "option",params,enabled
      FROM `jos_extensions`
      WHERE `type` = 'component'
      AND `element` = 'com_resources'
  47. SELECT extension_id AS id,element AS "option",params,enabled
      FROM `jos_extensions`
      WHERE `type` = 'component'
      AND `element` = 'com_wiki'
  48. SELECT extension_id AS id,element AS "option",params,enabled
      FROM `jos_extensions`
      WHERE `type` = 'component'
      AND `element` = 'com_citations'
  49. SELECT extension_id AS id,element AS "option",params,enabled
      FROM `jos_extensions`
      WHERE `type` = 'component'
      AND `element` = 'com_media'
  50. UPDATE `jos_session`
      SET `data` = '__default|a:11:{s:15:\"session.counter\";i:1;s:19:\"session.timer.start\";i:1713595316;s:18:\"session.timer.last\";i:1713595316;s:17:\"session.timer.now\";i:1713595316;s:24:\"session.client.forwarded\";s:12:\"3.14.132.214\";s:8:\"registry\";O:23:\"Hubzero\\Config\\Registry\":2:{s:7:\"\0*\0data\";O:8:\"stdClass\":1:{s:1:\"0\";s:7:\"session\";}s:9:\"separator\";s:1:\".\";}s:4:\"user\";C:17:\"Hubzero\\User\\User\":22:{a:1:{s:5:\"guest\";b:1;}}s:11:\"tracker.sid\";s:32:\"046bbdb79eb1957dad621fe30476e456\";s:12:\"tracker.ssid\";s:32:\"046bbdb79eb1957dad621fe30476e456\";s:12:\"tracker.rsid\";s:32:\"046bbdb79eb1957dad621fe30476e456\";s:13:\"session.token\";s:32:\"05f0b85bb0f4932f518c649c8d76749a\";}',`time` = '1713595316',`ip` = '10.84.154.187'
      WHERE `session_id` = '046bbdb79eb1957dad621fe30476e456'
  • onAfterInitialise — Method — plgSystemP3p::onAfterInitialise → /core/plugins/system/p3p/p3p.php:21
  • onAfterInitialise — Method — plgSystemRemember::onAfterInitialise → /core/plugins/system/remember/remember.php:20
  • onAfterInitialise — Method — plgSystemHubzero::onAfterInitialise → /core/plugins/system/hubzero/hubzero.php:21
  • onAfterInitialise — Method — plgSystemXFeed::onAfterInitialise → /core/plugins/system/xfeed/xfeed.php:21
  • onAfterInitialise — Method — plgSystemSupergroup::onAfterInitialise → /core/plugins/system/supergroup/supergroup.php:113
  • onAfterInitialise — Method — plgSystemReferrerpolicy::onAfterInitialise → /core/plugins/system/referrerpolicy/referrerpolicy.php:21
  • onAfterRoute — Method — plgSystemJquery::onAfterRoute → /core/plugins/system/jquery/jquery.php:21
  • onAfterRoute — Method — plgSystemSpamjail::onAfterRoute → /core/plugins/system/spamjail/spamjail.php:21
  • onAfterRoute — Method — plgSystemIncomplete::onAfterRoute → /core/plugins/system/incomplete/incomplete.php:21
  • onAfterRoute — Method — plgSystemUnconfirmed::onAfterRoute → /core/plugins/system/unconfirmed/unconfirmed.php:21
  • onAfterRoute — Method — plgSystemUnapproved::onAfterRoute → /core/plugins/system/unapproved/unapproved.php:21
  • onAfterRoute — Method — plgSystemPassword::onAfterRoute → /core/plugins/system/password/password.php:21
  • onContentPrepare — Method — plgContentLoadmodule::onContentPrepare → /core/plugins/content/loadmodule/loadmodule.php:35
  • onContentPrepare — Method — plgContentEmailcloak::onContentPrepare → /core/plugins/content/emailcloak/emailcloak.php:25
  • onContentPrepare — Method — plgContentPagebreak::onContentPrepare → /core/plugins/content/pagebreak/pagebreak.php:35
  • onContentPrepare — Method — plgContentXhubtags::onContentPrepare → /core/plugins/content/xhubtags/xhubtags.php:25
  • onContentPrepare — Method — plgContentFormatwiki::onContentPrepare → /core/plugins/content/formatwiki/formatwiki.php:63
  • onContentPrepare — Method — plgContentFormathtml::onContentPrepare → /core/plugins/content/formathtml/formathtml.php:105
  • onContentPrepare — Method — plgContentExternalhref::onContentPrepare → /core/plugins/content/externalhref/externalhref.php:41
  • onAfterDispatch — Method — plgSystemMobile::onAfterDispatch → /core/plugins/system/mobile/mobile.php:22
  • onAfterDispatch — Method — plgSystemDebug::onAfterDispatch → /core/plugins/system/debug/debug.php:60
  • onAfterDispatch — Method — PlgSystemHighlight::onAfterDispatch → /core/plugins/system/highlight/highlight.php:25
  • onAfterRender — Method — plgSystemSef::onAfterRender → /core/plugins/system/sef/sef.php:21