Version of Jdk on my machine

 
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Special Forums UNIX and Linux Applications Version of Jdk on my machine
# 1  
Old 10-09-2012
Version of Jdk on my machine

Hello,

Please, i ask what command linux used to know the version of jdk installed on my machine ?


Thank you so much.
# 2  
Old 10-09-2012
Code:
 
java -version

This User Gave Thanks to itkamaraj For This Post:
# 3  
Old 10-09-2012
Quote:
java version "1.6.0_20"
OpenJDK Runtime Environment (IcedTea6 1.9.13) (6b20-1.9.13-0ubuntu1~10.10.1)
OpenJDK Client VM (build 19.0-b09, mixed mode, sharing)
I have a question please about jdk, i have used in my code the function renameTo in my code java,
I ask please is that possible that a function in java operates correctly with a version of jdk and not with others (exp openjdk-6-jdk ) ?

Last edited by chercheur857; 10-09-2012 at 08:51 AM..
# 4  
Old 10-09-2012
you can get the java version using the below code

Code:
String version = System.getProperty("java.version");

then compare the version with your expected version, then do the rename
# 5  
Old 10-09-2012
i have added this instruction to my code:
The version is 1.6.0_20
with this version of jdk the renameTo works well
but with openjdk-6 not
how can i do please ?
see this url please: http://docs.oracle.com/javase/7/docs...ava.io.File%29
# 6  
Old 10-09-2012
can you explain more of the below line

but with openjdk-6 not
# 7  
Old 10-09-2012
the same code run correctly on a machine with jdk: java version "1.6.0_20" OpenJDK Runtime Environment (IcedTea6 1.9.13) (6b20-1.9.13-0ubuntu1~10.10.1) OpenJDK Client VM (build 19.0-b09, mixed mode, sharing) but with other machine with jdk openjdk-6-jdk does not work :::

At run time the program does not rename the file (it does not moving the file).. i have an error when the programm will use the file in the new destination (when i insert command linux mv in my code java it works !!!)
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