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Can we read the OS environment variables in Java?
(2 answers)
Closed 9 years ago.
This may be a very simple problem, but I couldn't find an answer googleing and I'm in a rush - so I'd appreciate fast code examples.
I have an environment variable on the OS I would like to read using Java code. I've tried System.getProperty, but that only seems to work for the -D variables supplied directly for the JVM.
How can my Java code read OS variables?
Try System.getenv(String name)
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What is the difference between "architecture-neutral" and "portable"?
(9 answers)
Closed 6 years ago.
I read that "Java is architectural neutral because it have the capacity to read the factor key of one processor into the factor of another processor."
Please explain me in detail the above statement?
Java was designed to support applications on networks.
To enable a Java application to execute anywhere on the network, the compiler generates an architecture-neutral object file format--the compiled code is executable on many processors, given the presence of the Java runtime system
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How can I disable the JVM on a Windows platform for running background matlab scripts
(1 answer)
Closed 7 years ago.
I need to disable JVM in Matlab R2012B to free memory.I tried the command "-nojvm" at the end of the launch string but it doesn't work...
samobody can help me?
Thanks...
You need to use -nojvm, not -nojmv.
This question already has an answer here:
Closed 10 years ago.
Possible Duplicate:
Reading and Writing to a DVD/CD - Java
Is possible to build/code a burner software like Nero in JAVA Only ? ... How do that ?
That's will be great if it's possible !!
Thank you
No. Java does not have direct access to the hardware from pure Java code. You'd have to use native code loaded via JNI calls.
This question already has answers here:
Closed 11 years ago.
Possible Duplicate:
How to determine if a screensaver is running in Java?
is there any way you can find out if the screensaver is active with java? I've searched the web but the only things I found was very complicated native code... My program is made for windows only.
Java cannot handle system tasks directly.
You should use JNI (Java Native Interface) or JNA (Java Native Access) to do it.
I haven't tried this code, but they claim to answer your question with JNA as Ammar suggested: Screen Saver State.
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How Do I Eject a Volume in Java?
(2 answers)
Closed 3 years ago.
Is there any simple way to eject the D drive in Windows 7 using Java? I don't particularly care about cross-platform compatibility at the moment. I've done some research andRuntime.getRuntime().exec(); has shown up most... but I have no idea what to put as the string parameter, I've tried a few things but it just throws up on me!
You can pass the vbscript code to eject the cd as an argument in the exec() function.