diff --git a/manifests/config.pp b/manifests/config.pp
index 0f88c26..751d1dc 100644
--- a/manifests/config.pp
+++ b/manifests/config.pp
@@ -26,6 +26,9 @@
   $nexus_context = $::nexus::nexus_context,
   $nexus_work_dir = $::nexus::nexus_work_dir,
   $nexus_data_folder = $::nexus::nexus_data_folder,
+  $nexus_java_initmemory = $::nexus::nexus_java_initmemory,
+  $nexus_java_maxmemory  = $::nexus::nexus_java_maxmemory,
+  $nexus_java_add_number = $::nexus::nexus_java_add_number,
   $version = $::nexus::version,
 ) {
 
@@ -34,11 +37,14 @@
     # {karaf.data}/etc/nexus.properties where {karaf.data} is the work dir
     $conf_path = 'etc/nexus.properties'
     $nexus_properties_file = "${nexus_work_dir}/${conf_path}"
+    $java_config_file = "${nexus_root}/${nexus_home_dir}/bin/nexus.vmoptions"
   }
   elsif versioncmp($version, '3.0.0') >= 0 {
     $conf_path = 'etc/org.sonatype.nexus.cfg'
     $nexus_properties_file = "${nexus_root}/${nexus_home_dir}/${conf_path}"
+    $java_config_file = "${nexus_root}/${nexus_home_dir}/bin/nexus.vmoptions"
   } else {
+    $java_config_file = "${nexus_root}/${nexus_home_dir}/bin/jsw/conf/wrapper.conf"
     $conf_path = 'conf/nexus.properties'
     $nexus_properties_file = "${nexus_root}/${nexus_home_dir}/${conf_path}"
   }
@@ -82,4 +88,53 @@
       notify => Service['nexus']
     }
   }
+
+  if $nexus_java_initmemory {
+    if (versioncmp($version, '3.0.0') < 0) {
+      file_line {'comment_nexus_java_initmemory':
+        path  => $java_config_file,
+        line  => '#wrapper.java.initmemory=',
+        match => '^wrapper.java.initmemory=',
+      }
+      file_line {'set_nexus_java_xms':
+        path  => $java_config_file,
+        line  => "wrapper.java.additional.${nexus_java_add_number}=-Xms${nexus_java_initmemory}",
+        match => "^wrapper.java.additional.${nexus_java_add_number}=-Xms",
+      }
+    } else {
+      file_line {'set_nexus_java_xms':
+        path  => $java_config_file,
+        line  => "-Xms${nexus_java_initmemory}",
+        match => '^-Xms',
+      }
+    }
+  }
+
+  if $nexus_java_maxmemory {
+    if (versioncmp($version, '3.0.0') < 0) {
+      file_line {'comment_nexus_java_maxmemory':
+        path  => $java_config_file,
+        line  => '#wrapper.java.maxmemory=',
+        match => '^wrapper.java.maxmemory=',
+      }
+
+      if $nexus_java_initmemory {
+        $_num = $nexus_java_add_number + 1
+      } else {
+        $_num = $nexus_java_add_number
+      }
+
+      file_line {'set_nexus_java_xmx':
+        path  => $java_config_file,
+        line  => "wrapper.java.additional.${_num}=-Xmx${nexus_java_maxmemory}",
+        match => "^wrapper.java.additional.${_num}=-Xmx",
+      }
+    } else {
+      file_line {'set_nexus_java_xmx':
+        path  => $java_config_file,
+        line  => "-Xmx${nexus_java_maxmemory}",
+        match => '^-Xmx',
+      }
+    }
+  }
 }
diff --git a/manifests/init.pp b/manifests/init.pp
index fd90c5b..d2d4e8e 100644
--- a/manifests/init.pp
+++ b/manifests/init.pp
@@ -46,6 +46,9 @@
   $nexus_work_recurse    = $nexus::params::nexus_work_recurse,
   $nexus_context         = $nexus::params::nexus_context,
   $nexus_manage_user     = $nexus::params::nexus_manage_user,
+  $nexus_java_initmemory = $nexus::params::nexus_java_initmemory,
+  $nexus_java_maxmemory  = $nexus::params::nexus_java_maxmemory,
+  $nexus_java_add_number = $nexus::params::nexus_java_add_number,
   $nexus_data_folder     = $nexus::params::nexus_data_folder,
   $download_folder       = $nexus::params::download_folder,
   $manage_config         = $nexus::params::manage_config,
@@ -119,15 +122,18 @@
 
   if $manage_config {
     class{ 'nexus::config':
-      nexus_root        => $nexus_root,
-      nexus_home_dir    => $nexus_home_dir,
-      nexus_host        => $nexus_host,
-      nexus_port        => $nexus_port,
-      nexus_context     => $nexus_context,
-      nexus_work_dir    => $real_nexus_work_dir,
-      nexus_data_folder => $nexus_data_folder,
-      notify            => Class['nexus::service'],
-      require           => Anchor['nexus::setup']
+      nexus_root            => $nexus_root,
+      nexus_home_dir        => $nexus_home_dir,
+      nexus_host            => $nexus_host,
+      nexus_port            => $nexus_port,
+      nexus_context         => $nexus_context,
+      nexus_work_dir        => $real_nexus_work_dir,
+      nexus_data_folder     => $nexus_data_folder,
+      nexus_java_initmemory => $nexus_java_initmemory,
+      nexus_java_maxmemory  => $nexus_java_maxmemory,
+      nexus_java_add_number => $nexus_java_add_number,
+      notify                => Class['nexus::service'],
+      require               => Anchor['nexus::setup']
     }
   }
 
diff --git a/manifests/params.pp b/manifests/params.pp
index e27739f..80be0dc 100644
--- a/manifests/params.pp
+++ b/manifests/params.pp
@@ -36,6 +36,9 @@
   $nexus_host                    = '0.0.0.0'
   $nexus_port                    = '8081'
   $nexus_context                 = '/nexus'
+  $nexus_java_initmemory         = undef
+  $nexus_java_maxmemory          = undef
+  $nexus_java_add_number         = 5
   $nexus_manage_user             = true
   $pro_download_site             = 'http://download.sonatype.com/nexus/professional-bundle'
   $nexus_data_folder             = undef
diff --git a/spec/classes/config_spec.rb b/spec/classes/config_spec.rb
index 98a9362..69671ca 100644
--- a/spec/classes/config_spec.rb
+++ b/spec/classes/config_spec.rb
@@ -1,20 +1,26 @@
 require 'spec_helper'
 
 describe 'nexus::config', :type => :class do
-  let(:params) {
+  let(:default_params) {
     {
-      'nexus_root'        => '/foo',
-      'nexus_home_dir'    => '/bar',
-      'nexus_host'        => '1.1.1.1',
-      'nexus_port'        => '8888',
-      'nexus_context'     => '/baz',
-      'nexus_work_dir'    => '/foom',
-      'version'           => '2.11.2',
-      'nexus_data_folder' => '',
+      'nexus_root'            => '/foo',
+      'nexus_home_dir'        => '/bar',
+      'nexus_host'            => '1.1.1.1',
+      'nexus_port'            => '8888',
+      'nexus_context'         => '/baz',
+      'nexus_work_dir'        => '/foom',
+      'version'               => '2.11.2',
+      'nexus_java_initmemory' => '256M',
+      'nexus_java_maxmemory'  => '768M',
+      'nexus_java_add_number' => 5,
+      'nexus_data_folder'     => '',
     }
   }
 
   context 'with nexus version 2.x test values' do
+    let (:params) do
+      default_params
+    end
     it { should contain_class('nexus::config') }
 
     it { should contain_file_line('nexus-application-host').with(
@@ -40,6 +46,43 @@
       'match' => '^nexus-work',
       'line'  => 'nexus-work=/foom',
     ) }
+    it { should contain_file_line('comment_nexus_java_maxmemory').with(
+      'path'  => '/foo//bar/bin/jsw/conf/wrapper.conf',
+      'match' => '^wrapper.java.maxmemory=',
+      'line'  => '#wrapper.java.maxmemory=',
+    ) }
+    it { should contain_file_line('comment_nexus_java_initmemory').with(
+      'path'  => '/foo//bar/bin/jsw/conf/wrapper.conf',
+      'match' => '^wrapper.java.initmemory=',
+      'line'  => '#wrapper.java.initmemory=',
+    ) }
+    it { should contain_file_line('set_nexus_java_xms').with(
+      'path'  => '/foo//bar/bin/jsw/conf/wrapper.conf',
+      'match' => '^wrapper.java.additional.5=-Xms',
+      'line'  => 'wrapper.java.additional.5=-Xms256M',
+    ) }
+    it { should contain_file_line('set_nexus_java_xmx').with(
+      'path'  => '/foo//bar/bin/jsw/conf/wrapper.conf',
+      'match' => '^wrapper.java.additional.6=-Xmx',
+      'line'  => 'wrapper.java.additional.6=-Xmx768M',
+    ) }
+  end
+  context 'with nexus version 3.x test values' do
+    let (:params) do
+      default_params.merge({
+        'version' => '3.0.0',
+      })
+    end
+    it { should contain_file_line('set_nexus_java_xms').with(
+      'path'  => '/foo//bar/bin/nexus.vmoptions',
+      'match' => '^-Xms',
+      'line'  => '-Xms256M',
+    ) }
+    it { should contain_file_line('set_nexus_java_xmx').with(
+      'path'  => '/foo//bar/bin/nexus.vmoptions',
+      'match' => '^-Xmx',
+      'line'  => '-Xmx768M',
+    ) }
   end
 end