Trail: Deployment
Lesson: Doing More With Java Rich Internet Applications
Section: Setting Trusted Arguments and Secure Properties

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The Java Tutorials have been written for JDK 8. Examples and practices described in this page don't take advantage of improvements introduced in later releases and might use technology no longer available.
See Dev.java for updated tutorials taking advantage of the latest releases.
See Java Language Changes for a summary of updated language features in Java SE 9 and subsequent releases.
See JDK Release Notes for information about new features, enhancements, and removed or deprecated options for all JDK releases.

System Properties

This topic lists system properties that can be accessed by rich Internet applications (RIAs) that are restricted to the security sandbox and are launched with or without the Java Network Launch Protocol (JNLP). Some system properties cannot be accessed by sandbox RIAs.

Secure System Properties Accessible by All RIAs

All RIAs can retrieve the following secure system properties:

java.class.version
java.vendor
java.vendor.url
java.version
os.name
os.arch
os.version
file.separator
path.separator
line.separator

Secure System Properties Accessible by RIAs Launched by Using JNLP

RIAs launched by using JNLP can set and retrieve the following secure properties:

awt.useSystemAAFontSettings
http.agent
http.keepAlive
java.awt.syncLWRequests
java.awt.Window.locationByPlatform
javaws.cfg.jauthenticator
javax.swing.defaultlf
sun.awt.noerasebackground
sun.awt.erasebackgroundonresize
sun.java2d.d3d
sun.java2d.dpiaware
sun.java2d.noddraw
sun.java2d.opengl
swing.boldMetal
swing.metalTheme
swing.noxp
swing.useSystemFontSettings

Forbidden System Properties

Sandbox RIAs cannot access the following system properties:

java.class.path
java.home
user.dir
user.home
user.name

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