Index: branches/5.2.x/core/install/install_toolkit.php
===================================================================
diff -u -N -r14860 -r14863
--- branches/5.2.x/core/install/install_toolkit.php	(.../install_toolkit.php)	(revision 14860)
+++ branches/5.2.x/core/install/install_toolkit.php	(.../install_toolkit.php)	(revision 14863)
@@ -1,6 +1,6 @@
 <?php
 /**
-* @version	$Id: install_toolkit.php 14860 2011-12-12 11:36:50Z alex $
+* @version	$Id: install_toolkit.php 14863 2011-12-13 10:01:17Z alex $
 * @package	In-Portal
 * @copyright	Copyright (C) 1997 - 2009 Intechnic. All rights reserved.
 * @license      GNU/GPL
@@ -1158,10 +1158,10 @@
 				$current = $this->getSystemConfig('Misc', 'CompressionEngine');
 			}
 
-			$output = shell_exec('java -version');
+			$output = shell_exec('java -version 2>&1');
 			$compression_engines = Array ('' => 'None', 'yui' => 'YUICompressor (Java)', 'php' => 'PHP-based');
 
-			if ( strpos($output, 'Java Version') === false ) {
+			if ( stripos($output, 'java version') === false ) {
 				if ( $current == 'yui' ) {
 					$compression_engines['yui'] .= ' (offline)';
 				}
Index: branches/5.2.x/core/install/prerequisites.php
===================================================================
diff -u -N -r14860 -r14863
--- branches/5.2.x/core/install/prerequisites.php	(.../prerequisites.php)	(revision 14860)
+++ branches/5.2.x/core/install/prerequisites.php	(.../prerequisites.php)	(revision 14863)
@@ -1,6 +1,6 @@
 <?php
 /**
-* @version	$Id: prerequisites.php 14860 2011-12-12 11:36:50Z alex $
+* @version	$Id: prerequisites.php 14863 2011-12-13 10:01:17Z alex $
 * @package	In-Portal
 * @copyright	Copyright (C) 1997 - 2009 Intechnic. All rights reserved.
 * @license      GNU/GPL
@@ -122,6 +122,9 @@
 			$ret['mysql'] = function_exists('mysql_connect');
 			$ret['json'] = function_exists('json_encode');
 
+			$output = shell_exec('java -version 2>&1');
+			$ret['java'] = stripos($output, 'java version') !== false;
+
 			$ret['memory_limit'] = $this->isPhpSettingChangeable('memory_limit', '33M');
 			$ret['date.timezone'] = ini_get('date.timezone') != '';
 
Index: branches/5.2.x/core/install/step_templates/sys_requirements.tpl
===================================================================
diff -u -N -r14860 -r14863
--- branches/5.2.x/core/install/step_templates/sys_requirements.tpl	(.../sys_requirements.tpl)	(revision 14860)
+++ branches/5.2.x/core/install/step_templates/sys_requirements.tpl	(.../sys_requirements.tpl)	(revision 14863)
@@ -13,6 +13,7 @@
 	$check_titles = Array (
 		'php_version' => 'PHP version: 5.2+ (required)',
 		'url_rewriting' => 'URL Rewriting Support (optional)',
+		'java' => 'Java (optional)',
 		'sep1' => '<strong>PHP extensions:</strong>',
 		'memcache' => '- Memcache (optional)',
 		'curl' => '- Curl (required)',