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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.

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Debug Console

Close17 MBRequestSessionTimelineDatabase40
$_GET
Array( ) Array(

)
$_POST
Array( ) Array(

)
$_COOKIE
Array( ) Array(

)
$_SERVER
Array( REDIRECT_SCRIPT_URL => /kb/misc/java, REDIRECT_SCRIPT_URI => http://chemistryhub.org/k... Array(
REDIRECT_SCRIPT_URL => /kb/misc/java,
REDIRECT_SCRIPT_URI => http://chemistryhub.org/kb/misc/java,
REDIRECT_nokeepalive => ,
REDIRECT_STATUS => 200,
SCRIPT_URL => /kb/misc/java,
SCRIPT_URI => http://chemistryhub.org/kb/misc/java,
nokeepalive => ,
HTTP_HOST => chemistryhub.org,
HTTP_ACCEPT_ENCODING => x-gzip, gzip, deflate,
HTTP_USER_AGENT => CCBot/2.0 (http://commoncrawl.org/faq/),
HTTP_ACCEPT => text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8,
PATH => /sbin:/usr/sbin:/bin:/usr/bin,
SERVER_SIGNATURE => ,
SERVER_SOFTWARE => Apache/2.2.15 (CentOS),
SERVER_NAME => chemistryhub.org,
SERVER_ADDR => 206.221.159.27,
SERVER_PORT => 80,
REMOTE_ADDR => 54.81.8.73,
DOCUMENT_ROOT => /var/www/chemistryhub,
SERVER_ADMIN => root@localhost,
SCRIPT_FILENAME => /var/www/chemistryhub/index.php,
REMOTE_PORT => 46032,
REDIRECT_URL => /kb/misc/java,
GATEWAY_INTERFACE => CGI/1.1,
SERVER_PROTOCOL => HTTP/1.0,
REQUEST_METHOD => GET,
QUERY_STRING => ,
REQUEST_URI => /kb/misc/java,
SCRIPT_NAME => /index.php,
PHP_SELF => /index.php,
REQUEST_TIME_FLOAT => 1506159257.245,
REQUEST_TIME => 1506159257
)
separator .
orderBy id
orderDir asc
1 registerIP
2 access
always
renew
tracker.sid d8068beb45d269fb93ba6e7bb3113827
tracker.ssid d8068beb45d269fb93ba6e7bb3113827
tracker.rsid d8068beb45d269fb93ba6e7bb3113827
securiy_code0 69f93
session.token 19a0c1c360d900bdea883188ca2f3a3c
  • site 0.052 seconds (+0.052); 9.75 MB (+9.750) - afterInitialise
  • site 0.081 seconds (+0.029); 12.50 MB (+2.750) - afterRoute
  • site 0.111 seconds (+0.030); 14.50 MB (+2.000) - afterDispatch
  • site 0.120 seconds (+0.009); 14.75 MB (+0.250) - beforeRenderModule mod_custom (Hub Footer)
  • site 0.122 seconds (+0.002); 15.00 MB (+0.250) - afterRenderModule mod_custom (Hub Footer)
  • site 0.122 seconds (+0.000); 15.00 MB (0.000) - beforeRenderModule mod_collect (Collect)
  • site 0.123 seconds (+0.001); 15.00 MB (0.000) - afterRenderModule mod_collect (Collect)
  • site 0.123 seconds (+0.000); 15.00 MB (0.000) - beforeRenderModule mod_breadcrumbs (Breadcrumbs)
  • site 0.127 seconds (+0.003); 15.25 MB (+0.250) - afterRenderModule mod_breadcrumbs (Breadcrumbs)
  • site 0.127 seconds (+0.000); 15.25 MB (0.000) - beforeRenderModule mod_menu (Main Menu)
  • site 0.152 seconds (+0.025); 15.75 MB (+0.500) - afterRenderModule mod_menu (Main Menu)
  • site 0.152 seconds (+0.000); 15.75 MB (0.000) - beforeRenderModule mod_search (Search)
  • site 0.154 seconds (+0.001); 15.75 MB (0.000) - afterRenderModule mod_search (Search)
  • site 0.154 seconds (+0.000); 15.75 MB (0.000) - beforeRenderModule mod_reportproblems (Trouble Report)
  • site 0.168 seconds (+0.014); 17.00 MB (+1.250) - afterRenderModule mod_reportproblems (Trouble Report)
  • site 0.171 seconds (+0.003); 17.00 MB (0.000) - onAfterRender
  • site 0.173 seconds (+0.002); 17.00 MB (0.000) - sessionStore
17 MB

40 Queries Logged: 0.01750111579895 seconds

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  2. DELETE
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      AND `element` = 'com_languages'
  5. SELECT `session_id`
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      WHERE `session_id` = 'd8068beb45d269fb93ba6e7bb3113827'
  6. INSERT INTO `jos_session` (`session_id`, `client_id`, `time`, `ip`)
      VALUES ('d8068beb45d269fb93ba6e7bb3113827', 0, '1506159257', '54.81.8.73')
  7. SELECT extension_id AS id, element AS "option", params, enabled
      FROM jos_extensions
      WHERE `type` = 'component'
      AND `element` = 'com_members'
  8. SELECT extension_id AS id, element AS "option", params, enabled
      FROM jos_extensions
      WHERE `type` = 'component'
      AND `element` = 'com_users'
  9. 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
  10. SELECT id, rules
      FROM `jos_viewlevels`
  11. 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
  12. 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 m.component_id = e.extension_id
      WHERE m.published = 1
      AND m.parent_id > 0
      AND m.client_id = 0
      ORDER BY m.lft
  13. SELECT extension_id AS id, element AS "option", params, enabled
      FROM jos_extensions
      WHERE `type` = 'component'
      AND `element` = 'com_kb'
  14. SELECT *
      FROM `jos_categories`
      WHERE `jos_categories`.`extension` = 'com_kb'
      AND `jos_categories`.`path` = 'misc/java'
  15. 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
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      WHERE `jos_kb_articles`.`alias` = 'java'
  17. SELECT *
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  18. SELECT extension_id AS id, element AS "option", params, enabled
      FROM jos_extensions
      WHERE `type` = 'component'
      AND `element` = 'com_tags'
  19. SELECT jos_tags.*
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      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` = '0'
      GROUP BY jos_tags.id
  20. 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
  21. SELECT *
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      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
  22. SELECT *
      FROM `jos_categories`
      WHERE `jos_categories`.`parent_id` = '20'
  23. SELECT extension_id AS id, element AS "option", params, enabled
      FROM jos_extensions
      WHERE `type` = 'component'
      AND `element` = 'com_search'
  24. 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 = '0000-00-00 00:00:00' OR m.publish_up <= '2017-09-23 09:34:17')
      AND (m.publish_down = '0000-00-00 00:00:00' OR m.publish_down >= '2017-09-23 09:34:17')
      AND m.access IN (1,1,4)
      AND m.client_id = 0
      AND (mm.menuid = 82 OR mm.menuid <= 0)
      ORDER BY m.position, m.ordering
  25. SELECT extension_id AS id, element AS "option", params, enabled
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      AND `element` = 'com_support'
  26. SELECT extension_id AS id, element AS "option", params, enabled
      FROM jos_extensions
      WHERE `type` = 'component'
      AND `element` = 'com_content'
  27. SELECT extension_id AS id, element AS "option", params, enabled
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      AND `element` = 'com_courses'
  28. SELECT extension_id AS id, element AS "option", params, enabled
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  29. SELECT extension_id AS id, element AS "option", params, enabled
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  30. SELECT extension_id AS id, element AS "option", params, enabled
      FROM jos_extensions
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      AND `element` = 'com_resources'
  31. SELECT extension_id AS id, element AS "option", params, enabled
      FROM jos_extensions
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      AND `element` = 'com_citations'
  32. SELECT extension_id AS id, element AS "option", params, enabled
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      WHERE `type` = 'component'
      AND `element` = 'com_events'
  33. SELECT extension_id AS id, element AS "option", params, enabled
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      AND `element` = 'com_store'
  34. SELECT extension_id AS id, element AS "option", params, enabled
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      AND `element` = 'com_forum'
  35. SELECT extension_id AS id, element AS "option", params, enabled
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      AND `element` = 'com_groups'
  36. SELECT extension_id AS id, element AS "option", params, enabled
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  37. SELECT extension_id AS id, element AS "option", params, enabled
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      WHERE `session_id` = 'd8068beb45d269fb93ba6e7bb3113827'