Systems level programming in Java

Sometimes I heard people saying systems level programming in Java. And
I have seen some job posting also say that. Systems level programming
usually are done in C/C++. Can Java do that? Any examples?
please advise. thanks!!

My definition of system level programming includes the need to directly access the hardware through ports, interrupts,. calling BIOS functions and other system level code. Since Java can't do any of this, you can't do system level programming in Java.
However, if you accept another definition, you probably can do it.

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How to Access the Systems ipaddress in a java program

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Hi
In order to find the IP address of a system dynamically through a java programme Here is code...
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     public static void main(String args[])
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For the 2 question ie to convert a .class file to a
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System programming in Java

Hai!!!
Actully I'm working in Automatic distinction between the system progam & application programs. Is there any samples/source code of the system programs available in java???is it possible to distiguish between the system program & Application program by seeing the code??
Cheers!!!

Just curious what is it system programming in java? Can't recall any example...

Embedded system programming in java

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Can java be a low level programming language??*

can java be a low level programming language??
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strike one: you are asking an obvious homework type program without showing any evidence of having done any work of your own first. Please show your work first. This isn't a homework service.
strike two: you are cross posting here and in the "new to java forum". This irritates many of us to no end as we end up doing volunteer work to solve a problem only to find that its already been solved in another thread. So we've wasted our time for nothing. Don't do this.

Systems programming in Java

Is it possible to write system programs in java language? where can i find examples?

like writing device drivers or interacting with hardware i.e. ports input/output just like in 'C'..
If it is possible to write device drivers in java.....then we need not to write drivers for Windows, Solaris and linux separately. Just write device driver once and run it anywhere.. i don't know it is feasible or not.
Edited by: arun_maurya on May 7, 2008 2:24 AM

Setting persitent system environment variables using java program

hai,
Iam tryng to write installation for an application,which require to set some persistent system environment variables using java program. I have tried using set command Runtime.getRuntime().exec("cmd /c set blah blah "),but this applies only to that particular DOS promt only,i presume.And this is not perisistent.please do help.
Biju

The solution I proposed worked only on Windows XP/2003.
The following solution will work on Windows NT/2000/XP/2003 with JDK 1.2+.
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import com.ice.jni.registry.RegistryKey;
import com.ice.jni.registry.RegStringValue;
import com.ice.jni.registry.RegistryValue;
public class SetEnv
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    void exec(String[] args)
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JRE System-level settings does not work - JRE1.6.30

Good day,
I need to set deployment.security.mixcode parameter to "DISABLE" within of deployment.properties configuration file.
Also I wish to place the deployment.properties configuration file is not user-specific path. The default location is
<User Application Data Folder>\Sun\Java\Deployment\deployment.properties.
TO change the default location I read about possibility to use the deployment.config for specifying the System-Level
deployment.properties in the infrastructure.
Unfortunatelly seems does not work. Someone have got experience about system level settings of deployment.properties?
This is the configuration I have used.
deployment.config:
deployment.system.config.mandatory=FALSE
deployment.system.config=file/:C:\Program Files\Java\jre6\lib\deployment.properties
deployment.properties:
#deployment.properties
#Fri Feb 17 15:54:57 CET 2012
deployment.version=6.0
deployment.capture.mime.types=true
deployment.browser.path=C\:\\Program Files\\Internet Explorer\\iexplore.exe
#Java Deployment jre's
#Fri Feb 17 15:54:57 CET 2012
deployment.javaws.jre.0.product=1.6.0_31
deployment.javaws.jre.0.registered=true
deployment.javaws.jre.0.osname=Windows
deployment.javaws.jre.0.platform=1.6
deployment.javaws.jre.0.path=C\:\\Program Files\\Java\\jre6\\bin\\javaw.exe
deployment.javaws.jre.0.location=http\://java.sun.com/products/autodl/j2se
deployment.javaws.jre.0.enabled=true
deployment.javaws.jre.0.osarch=x86
deployment.security.mixcode=DISABLE <<====
Thank you in advance
Adriano C.
Edited by: user12025469 on Feb 20, 2012 6:23 AM
Edited by: user12025469 on Feb 20, 2012 7:48 AM

user12025469 wrote:
This is the configuration I have used.
deployment.config:
deployment.system.config.mandatory=FALSE
deployment.system.config=file/:C:\Program Files\Java\jre6\lib\deployment.propertiesHm, try using a file URL like this:
file\:C:/Program Files/Java/jre6/lib/deployment.propertiesI believe that the file is interpreted as a properties file, which means the colon and slashes need to be escaped. This would be it if you want to use a proper Windows path:
file\:C:\\Program Files\\Java\\jre6\\lib\\deployment.properties

Program in JAVA-ABAP

Can we program in JAVA in mySAP to build an application equivalant to ABAP?
If yes, then how much JAVA is essential? is basics fine? or advance concepts are required?

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Secondly, each time you would have to do a Jco call to the ABAP engine to pass back values/call an FM in the system, etc. That would add to the time taken by your app.
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Gets error "-17502; System Level Exception" while running the custom Step in NI TestStnad 2010

I have a custom teststand step which works like For loop in TestStand. Previously I was using LV 2009 and NI TestStand 4.2.1 and this step was working fine. Recently I upgraded my system to LV 2010 and TestStand 2010, since that it is not working.
When I run the step it gives error "-17502; System Level Exception". I have attached error screenshot.
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Attachments:
System Levle Exception error.JPG ‏25 KB

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Setting system level deployment.user.cachedir in deployment.config

G'day,
I've been experimenting with JRE 1.5.0_04 on Windows XP.
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I have managed this as follows.
C:\Windows\Sun\Java\Deployment\deployment.config contains:
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G'day,
Open the Java Console and execute "dump system and
deployment properties" which shows property values,
and see if what you want is there.Thanks, but I don't think I can use these at the system level, can I?
I did try using ${user.home} but that doesn't work.
So, are there any variables other than $USER_HOME and $JRE_HOME that can be used when setting system level properties?
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Thanks,
Chris.

New "Windows Programming Using Java" Website

Our newly created "Windows Programming Using Java" website (http://fivedots.coe.psu.ac.th/~ad/winJava/) is for programmers who want to extend Java's capabilities on Windows XP and/or Vista, but aren't sure where to start. One of the drawbacks of Java's portability is that many Java programmers have a rather sketchy knowledge of Windows-specific programming.
We plan to explain how Java applications can utilize Windows application software, OS features, and hardware beyond the reach of Java's standard libraries. A variety of Java/Windows programming techniques will be explained, including:
* Java's employment of the Win32 API via C, JNI, and J/Invoke.
* Java's utilization of Window's Command Line Interface (CLI) and batch files, accessed through Java's Runtime, ProcessBuilder, and Process classes.
* Java and Windows object-based scripting, centered around the use of VBScript, Windows Script Host (WSH), and Windows Management Instrumentation (WMI).
* Java interoperability with COM, including hosting of ActiveX controls in Swing containers using jacoZoom.
This website is a work in progress, with four chapters available for download at the moment. We'll be adding more regularly, and would love feedback on what we're doing.
Thanks,
Gayathri Singh and Andrew Davison
[email protected] and [email protected]
Edited by: AndrewDavison on Jun 20, 2008 1:36 AM

Hi, I am looking the similar kind of requirement that you had done.. Do you have any more details on the code that is working for you . All i need is if the user logs in successfully in windows, the the app should be accessible. Please let me know if you have the code with you on this problem.
Thanks in advance
"what i meant is the we b applications running in my system, when i access the application iam able to to login automatically with windows authentication and now in case of other users following process happened:"

Asynchronous socket programming in Java?

I am a C++ programmer, I just wonder how do I do asynchronous programming in Java?
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How to compile and run package programs in Java

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Hello,
I want to do register level programming with the NI 6602 card .
I want to use an x4 encoder reader and I want to use the continuous
frequency generation.
so i got the following tool to map the kernel space to the user space, so
a simple shell script will do the job.
http://www.linux.it/~rubini/software/phob/phob.html
and than just using the provided function phob_io
to programm the registers in a shell script:
#!/bin/bash
# shell script for init 6602 card with prf and encoder counter
# set prf
../phob_io ''0:048=0000'' # Input Select Register
../phob_io ''0:00C=1109'' # Command Register
../phob_io ''0:038=00ffffff'' # Load A Register
../phob_io ''0:03C=00ffffff'' # Load B Register
../phob_io ''0:
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But don"t get any output as i expect, what is wrong?
Do i have to set some othe registers, or write somthing to the PCI-Config?
Does anyone has some sample configuration?
Thanks
Mario Behn
Mario Behn
Microwave Remote Sensing Laboratory Room 104
University of Massachusetts
Knowles Engineering Building
Amherst, MA 01003-4410
phone (413) 545-4675
fax (413) 545-4652
email [email protected]

A typical project for one of the 660x RLP examples needs to include the following source code files:
../OSinterface/osiBus.cpp - generic register I/O interface used by the example code
../OSinterface/Linux/osiUserCode.cpp - OS specific adapter used by osiBus to access registers on the hardware in the specific OS
../ChipObjects/tTIO.cpp - abstraction of the chips and registers on the hardware into C++ classes and properties
and one of the examples files, e.g.
../Examples/gpct_ex1.cpp - implementation of a specific operation, including all initialization of the hardware
(The same is true for the examples for other boards although the names of the ChipObject and examples will be different.)
Each of these files needs to be compiled to give y
ou object files, and then all of the object files need to be linked together to build an application (executable binary). The errors you list seem to indicate that you are not using all of these files.
There is more information on the RLP example architecture in the attached PDF document.
Christian Loew, CLA
Principal Systems Engineer, National Instruments
Please tip your answer providers with kudos.
Any attached Code is provided As Is. It has not been tested or validated as a product, for use in a deployed application or system,
or for use in hazardous environments. You assume all risks for use of the Code and use of the Code is subject
to the Sample Code License Terms which can be found at: http://ni.com/samplecodelicense
Attachments:
Register_Level_Programming_Architecture.pdf ‏165 KB

Systems level programming in Java

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