Develop Reference

Get specific java version with powershell

I have some issues with getting the java version out as a string.
In a batch script I have done it like this:
for /f tokens^=2-5^ delims^=.-_^" %%j in ('%EXTRACTPATH%\Java\jdk_extract\bin\java -fullversion 2^>^&1') do set "JAVAVER=%%j.%%k.%%l_%%m"
The output is: 1.8.0_121
Now I want to do this for PowerShell, but my output is: 1.8.0_12, I miss one "1" in the end Now I have tried it with trim and split but nothing gives me the right output can someone help me out?
This is what I've got so var with PowerShell
$javaVersion = (& $extractPath\Java\jdk_extract\bin\java.exe -fullversion 2>&1)
$javaVersion = "$javaVersion".Trim("java full version """).TrimEnd("-b13")
The full output is: java full version "1.8.0_121-b13"

TrimEnd() works a little different, than you might expect:
'1.8.0_191-b12'.TrimEnd('-b12')
results in: 1.8.0_19 and so does:
'1.8.0_191-b12'.TrimEnd('1-b2')
The reason is, that TrimEnd() removes a trailing set of characters, not a substring. So .TrimEnd('-b12') means: remove all occurrences of any character of the set '-b12' from the end of the string. And that includes the last '1' before the '-'.
A better solution in your case would be -replace:
'java full version "1.8.0_191-b12"' -replace 'java full version "(.+)-b\d+"','$1'

Use a regular expression for matching and extracting the version number:
$javaVersion = if (& java -fullversion 2>&1) -match '\d+\.\d+\.\d+_\d+') {
$matches[0]
}
or
$javaVersion = (& java -fullversion 2>&1 | Select-String '\d+\.\d+\.\d+_\d+').Matches[0].Groups[0].Value

JFlex Scanner ArrayIndexOutOfBoundsException: 769

I am trying to create a Scanner with JFlex. I created my .jflex file and it compiles and everything. The problem is that when I try to prove it, some times it gives me and error of ArrayIndexOutOfBoundsException: 769 in the .java class that JFlex created.
I am using Cup Parser generator too. I don't know if the problem can be related with the part of Cup Analysis, but here is how I called my analyzers.
ScannerLexico lexico = new ScannerLexico(new BufferedReader(new StringReader( jTextPane1.getText())));
ParserSintactico sintaxis = new ParserSintactico(lexico);
I don't know how to fix it. Please help me.
Here are the links to my code:
JFlex File "ScannerFranklin.jflex"
Java Class generated "ScannerLexico.java"
The part where I have the problem in the .java class created by JFlex, in next_token() function (Line 899 in java file).
int zzNext = zzTransL[ zzRowMapL[zzState] + zzCMapL[zzInput] ];
if (zzNext == -1) break zzForAction;
zzState = zzNext;
Thanks.

According to its documentation, JFlex throws ArrayIndexOutOfBounds exceptions whenever it encounters Unicode characters using the %7bit or %8bit/%full encoding options. It recommends to always use the %unicode option instead, which is the default.
You are using the %unicode option, but you're also using %full. Apparently when you have both options, %full takes precedence. So remove %full and the error should go away.

Run an ABCL code that uses cl-cppre

With reference to my previous question,
Executing a lisp function from Java
I was able to call lisp code from Java using ABCL.
But the problem is, the already existing lisp code uses CL-PPCRE package.
I can not compile the code as it says 'CL-PPCRE not found'.
I have tried different approaches to add that package,
including
1) how does one compile a clisp program which uses cl-ppcre?
2)https://groups.google.com/forum/#!topic/cl-ppcre/juSfOhEDa1k
Doesnot work!
Other thing is, that executing (compile-file aima.asd) works perfectly fine although it does also require cl-pprce
(defpackage #:aima-asd
(:use :cl :asdf))
(in-package :aima-asd)
(defsystem aima
:name "aima"
:version "0.1"
:components ((:file "defpackage")
(:file "main" :depends-on ("defpackage")))
:depends-on (:cl-ppcre))
The final java code is
interpreter.eval("(load \"aima/asdf.lisp\")");
interpreter.eval("(compile-file \"aima/aima.asd\")");
interpreter.eval("(compile-file \"aima/defpackage.lisp\")");
interpreter.eval("(in-package :aima)");
interpreter.eval("(load \"aima/aima.lisp\")");
interpreter.eval("(aima-load 'all)");
The error message is
Error loading C:/Users/Administrator.NUIG-1Z7HN12/workspace/aima/probability/domains/edit-nets.lisp at line 376 (offset 16389)
#<THREAD "main" {3A188AF2}>: Debugger invoked on condition of type READER-ERROR
The package "CL-PPCRE" can't be found.
[1] AIMA(1):
Can anyone help me?

You need to load cl-ppcre before you can use it. You can do that by using (asdf:load-system :aima), provided that you put both aima and cl-ppcre into locations that your ASDF searches.

I used QuickLisp to add cl-ppcre (because nothing else worked for me).
Here is what I did
(load \"~/QuickLisp.lisp\")")
(quicklisp-quickstart:install)
(load "~/quicklisp/setup.lisp")
(ql:quickload :cl-ppcre)
First 2 lines are only a one time things. Once quickLisp is installed you can start from line 3.

JavaImp plugin not able to parse Java files

I have been using the JavaImp.vim script for auto importing Java statements in VIM
But trying out different directories in the JavaImpPaths, I am still unable to make JavaImp parse the Java files in the source to make auto imports possible
this is how my .vimrc looks like
let g:JavaImpPaths = "~/Documents/android-sdks/sources/android-21/android/content/"
let g:JavaImpClassList = "~/.vim/JavaImp/JavaImp.txt"
let g:JavaImpJarCache = "~/.vim/JavaImp/cache/"
This is what I get running JIG in new Vim window
:JIG
Do you want to create the directory ~/.vim/JavaImp/cache/?
Searching in path (package): ~/Documents/android-sdks/sources/android-21/android
/content/ ()
Sorting the classes, this may take a while ...
Assuring uniqueness...
Error detected while processing function <SNR>10_JavaImpGenerate:
line 75:
E37: No write since last change (add ! to override)
Done. Found 1 classes (0 unique)
Press ENTER or type command to continue

It might be late, but if anyone else comes along this might help them...
I got it working with the following changes to the script:
line 181 from
close
to
close!
And lines 207/208 from
let l:javaList = glob(a:cpath . "/**/*.java", 1, 1)
let l:clssList = glob(a:cpath . "/**/*.class", 1, 1)
to
let l:javaList = split(glob(a:cpath . "/**/*.java"), "\n")
let l:clssList = split(glob(a:cpath . "/**/*.class"), "\n")

Unsupport characters in command line file path

I would linke to call java app from PHP:
exec('LC_ALL=en_US.utf-8 java -jar /test.jar' . $filepath . ');
But always there are unsupported characters in the file path.
For example: # & ; ? * [SPACE]..., after change them to # \& ... it will be ok.
But a full list of these characters could not be find.
Any ideas to solve this problem?

Take a look at escapeshellarg() and escapeshellcmd().
They will take care of all necessary sanitation for you.
If $filepath comes from the outside (e.g. from user input), running escapeshellarg() is mandatory to prevent injections.

My problem resolved.
Useful url:
http://bugs.php.net/bug.php?id=44945