84,488,480 programs installed

Should I remove J2SE Runtime Environment Update 21?

What percent of users and experts removed it?
9% remove it91% keep it
Overall Sentiment
What do people think about it?
Be the first to rate (click star to rate)
How common is it?
Global Rank #16,242
United States Rank #19,952
Reach 0.0161%
Lifespan of installation (until removal)
< 5.70 days
147.64 days >
Average installed length: 77.57 days


VersionDistribution 100.00%

Other programs by Sun Microsystems

J2SE Runtime Environment 5.0 Update 21

What is J2SE Runtime Environment Update 21?  (from Sun Microsystems)

Java Platform, Standard Edition (Java SE) lets you develop and deploy Java applications on desktops and servers, as well as in today's demanding embedded environments. Java offers the rich user interface, performance, versatility, portability, and security that today‚Äôs applications require. The JDK is a development en...  Read more


J2SE Runtime Environment 5.0 Update 21 is a software program developed by Sun Microsystems. During setup, the program creates a startup registration point in Windows in order to automatically start when any user boots the PC. The primary executable is named javaw.exe. The setup package generally installs about 47 files and is usually about 10.5 MB (11,013,120 bytes). Relative to the overall usage of users who have this installed on their PCs, most are running Windows 7 (SP1) and Windows 10. While about 30% of users of J2SE Runtime Environment Update 21 come from the United States, it is also popular in France and Germany.

Program detailsProgram details

URL: java.com
Installation folder: C:\Program Files\java\jre1.5.0_21\bin
Uninstaller: MsiExec.exe /I{3248F0A8-6813-11D6-A77B-00B0D0150210}
(The Windows Installer is used for the installation, maintenance, and removal.)
Estimated size: 10.5 MB

Program filesFiles installed by J2SE Runtime Environment 5.0 Update 21

Program executable:javaw.exe
Name:Java(TM) 2 Platform Standard Edition 5.0 U21
Java(TM) 2 Platform Standard Edition binary
Path:C:\Program Files\java\jre1.5.0_21\bin\javaw.exe
Additional files:
  • awt.dll - Java(TM) 2 Platform Standard Edition 5.0 U21 (Java(TM) 2 Platform Standard Edition binary)
  • axbridge.dll - ActiveX Bridge for JavaBeans(TM)
  • dcpr.dll
  • deploy.dll - Java(TM) Deployment Library
  • dt_shmem.dll
  • dt_socket.dll
  • eula.dll - EULA
  • fontmanager.dll
  • hpi.dll
  • hprof.dll
  • instrument.dll
  • ioser12.dll
  • jaas_nt.dll
  • java.dll
  • java.exe
  • java_crw_demo.dll
  • javacpl.exe - Java(TM) Control Panel
  • JavaWebStart.dll - Java(TM) Web Start ActiveX Control
  • javaws.exe - Java(TM) Web Start Launcher
  • jawt.dll
  • JdbcOdbc.dll
  • jdwp.dll
  • jpeg.dll
  • jpicom32.dll - Java(TM) Plug-in COM Library
  • jpiexp32.dll - Java(TM) Plug-in for Internet Explorer
  • jpinscp.dll
  • jpioji.dll
  • jpishare.dll - Java(TM) Plug-in Share Library
  • jsound.dll
  • jsoundds.dll
  • jucheck.exe - Java(TM) Update Checker
  • jusched.exe
  • keytool.exe
  • kinit.exe
  • klist.exe
  • ktab.exe
  • management.dll
  • net.dll
  • nio.dll
  • NPJava11.dll - Java Plug-in 1.5.0_21 for Netscape Navigator (DLL Helper)
  • RegUtils.dll
  • j2pkcs11.dll - Java(TM) 2 Platform Standard Edition 5.0
  • JavaAccessBridge.DLL
  • JAWTAccessBridge.DLL

Program behaviorsBehaviors exhibited

Startup File (All Users Run)
  • jusched.exe is loaded in the all users (HKLM) registry as a startup file name 'SunJavaUpdateSched' which loads as "C:\Program Files\Java\jre1.5.0_21\bin\jusched.exe".

How do I remove J2SE Runtime Environment Update 21?

You can uninstall J2SE Runtime Environment Update 21 from your computer by using the Add/Remove Program feature in the Window's Control Panel.
  1. On the Start menu (for Windows 8, right-click the screen's bottom-left corner), click Control Panel, and then, under Programs, do one of the following:
    • Windows Vista/7/8/10: Click Uninstall a Program.
    • Windows XP: Click Add or Remove Programs.
  2. When you find the program J2SE Runtime Environment 5.0 Update 21, click it, and then do one of the following:
    • Windows Vista/7/8/10: Click Uninstall.
    • Windows XP: Click the Remove or Change/Remove tab (to the right of the program).
  3. Follow the prompts. A progress bar shows you how long it will take to remove J2SE Runtime Environment Update 21.

Win 7 (SP1) 64%
Win Vista 1%
Automatically starts? Yes
(Found in the run registry)
Uninstall it 9%
Keep it 91%

Windows OS versionsWindows

Which Windows OS versions does it run on?
Windows 7 71.29%
Windows 10 15.46%
Windows XP 9.46%
Windows Vista 3.79%
Which OS releases does it run on?
Windows 7 Home Premium 24.68%
Windows 7 Ultimate 22.15%
Windows 7 Professional 15.19%
Microsoft Windows XP 9.49%
Windows 7 Enterprise 6.33%
Windows 8 Pro 3.80%

Distribution by countryGeography

29.71% of installs come from the United States
Which countries install it?
  United States 29.71%
  France 8.29%
  Germany 4.57%
  United Kingdom 3.71%
  India 2.57%
  Italy 2.57%
  Iran 2.29%
  Canada 2.29%
  Turkey 2.29%
  Poland 2.29%
  Romania 2.00%
  Brazil 1.71%
  Taiwan 1.71%
  Sweden 1.71%

OEM distributionPC manufacturers

What PC manufacturers (OEMs) have it installed?
Dell 25.91%
Hewlett-Packard 20.73%
Acer 12.95%
ASUS 10.36%
Toshiba 5.70%
Intel 5.18%
Samsung 3.11%
American Megatrends 1.55%
Packard Bell 1.55%
Medion 1.04%
MSI 1.04%
Common models
Dell OptiPlex 390 2.54%
Acer Aspire 5738 2.54%
HP Pavilion dv7 Notebook ... 2.54%
HP Pavilion g6 Notebook P... 2.54%
ASUS All Series 1.69%
Dell Dell System Inspir... 1.69%

Publisher URL: www.oracle.com/us/sun/index.htm


user comment
No one has commented yet. Help others learn more about this software, share your comments.