I have file which has extension JDK.
Can anyone please tell What does it mean.
How to open it.
I have tried note pad it was showing data but with special character.
I need formatted data.
The Java Development Kit (JDK) is a software development environment used for developing Java applications and applets. It includes the Java Runtime Environment (JRE), an interpreter/loader (java), a compiler (javac), an archiver (jar), a documentation generator (javadoc) and other tools needed in Java development.
When you install a JDK it extracts a folder to a path and it's named as jdk{version}.
I'm guessing that you're using a mac because JDK's look like jdk{version}.jdk in macs. This can be found at /Library/Java/JavaVirtualMachines. However, you can open this just like another folder. But if that's not the case, you can hold control and click
the file with the extension .jdk and select show package contents.
As far as using it, you usually set it up as your JDK in your IDE.
Related
I want to set up a workflow that allows me to have a git repository with a uniform/consistent formatting. The developers (approx. 30) should be able to commit properly formatted changes to their local repository easily, independent of their operating system (either some Linux or Windows 10) and independent from their IDE. Changes shall be pushed to a Linux server which administrates the remote repository.
From my point of view there are two steps necessary to ensure that the remote repository is properly formatted:
Format the current state of repository according to a set of rules.
Format the files affected by every new commit according to these rules.
The first step can be implemented easily by running an auto-formatting tool (e.g. clang-format) on the complete repository. The implementation of the second step can be further divided into two substeps:
2a) Client side: Format a commit properly before pushing it to the server.
2b) Server side: Check if the repository will be properly formatted after the changes of the commit are applied.
The second substep (2b) can be implemented easily (simlar to step 1). However, the implementation of the first substep (2a) is more demanding and I would like to reach out to the community for tipps/tricks/ideas.
So far I've had a closer look on the Eclipse autoformatter and clang-format:
The Eclipse autoformatter can only be used when Eclipse is installed, I haven't found a Eclipse autoformatter standalone application. Is it possible to run the eclipse autoformatter from the command line without a GUI?
clang-format is a unix tool which I cannot install and run standalone on a windows system. I've seen there is a LLVM executable for windows but I am not sure if the installation will inflict any undesired changes to my system. Is anybody using LLVM/clang-format on windows?
Are there other auto-formatting tools for C which work on Linux and Windows 10? Is anybody successfully using python scripts for this purpose?
I need to debug my CN1 app on Android. That's why I successfully followed the instructions given in this Codename One tutorial (I copied and updated the gradle files dependencies content as explained).
I am a little bit confused now with the updated sources part.
There is a portion we didn’t get into with the video, copying updated sources directly without sending a build. This is possible if you turn on the new Android Java 8 support. At this point you should be able to remove the libs jar file which contains your compiled data and place your source code directly into the native project for debugging on the device.
If I change things in the native implementation file and if I launch the debug process it seems to work. But do I have to remove the userClasses.jar file from libs directory ? When is this jar file being called actually ?
Furthermore can I also make changes to the CN1 code from Android Studio (eg changes in Main Class) or these need a proper build process on the servers ?
UPDATE November 22nd 2016
In my experience the first time you want to debug your app in Android you need to copy paste your source files AND the userClasses.jar (in libs folder). When you update ONLY the native implementation files you can run a debug without sending a build. But if you change something in the CN1 code it won't be reflected in Android as long as you don't update the userClasses.jar (seems logical since Android does not know anything about CN1).
Any piece of information appreciated,
Cheers,
The build server doesn't have access to your code, just the jar with bytecode/data files and the user jar is "almost" that jar.
We run some bytecode processing such as retrolambda and other things so it isn't exactly what you compiled when you built the project.
If you copy and paste your source directory into the project you will need to remove that jar so you won't see duplicate classes. You will also need to enable Android Studios Java 8 language support to get that to work.
I am learning C and I want to install MinGW on my laptop. The MinGW installer is a web-installer, it requires the computer to have access to the internet when installing. But the problem is that my computer's not connected to the internet. So it can't be installed.
So I am thinking of downloading the complete offline installer on my smart-phone and transfering it to my PC through blue-tooth.
I have already tried TDM-GCC, but even that requires me to download somthing.
So is there an offline installer to MinGW? If yes where can I get it?
I did not find an offline installer for MinGW,but instead I found a better Windows port; which is MinGW-W64
From http://mingw-w64.yaxm.org/doku.php:
Mingw-w64 is an advancement of the original mingw.org project, created to support the GCC compiler on Windows systems. It has forked it in 2007 in order to provide support for 64 bits and new APIs. It has since then gained widespread use and distribution.
Now to answer this question: it has to be mannually installed by downloading the zip file. It won't require additional download.
You can download it from link : https://github.com/jonasstrandstedt/MinGW
You need to extract the MinGW folder in C:\ eg: c:\MinGW . Then what you need to follow the steps given in the link above. In CodeBlock IDE go to settings>compiler>Tochain Executables. There you need to click on auto detect or specify the folder manually.
The most direct answer to the question "Is there an offline MinGW installer?" is "maybe, but it would be a snapshot from the past, and it's almost certainly not up-to-date with the latest available released versions." The individual packages are made available (almost) as soon as they're released, so capturing everything in a self-contained installer is a moving target.
But, you can use the standard installer offline with a bit of prep work if you use MSYS2's pacman, which manages dependencies and grabs all the right versions for you.
The details are given in an answer to another question (https://stackoverflow.com/a/46791235/).
I want to import javacardx.apdu and javacardx.framework in eclipse and use in applet in java card, how do this work? and how do I download .jar file to import.
thnaks
You can find the JavaCard Development Kit here.
The JCDK contains not only the APIs but also tools to help you build CAP files. You should read the documentation provided.
The jar file you look for is api_classic.jar and you should find it in the lib folder of the JCDK. You need to add it to your classpath so you can compile java card code.
You cannot (usually) upload .jar files. You need to convert the class files within a package to a .cap file. This conversion is usually performed by the JCDK converter tool or a third party equivalent. It converts the byte code into Java Card compatible byte code and performs some early binding (using .exp files delivered with the various libraries).
You may of compile against the api_classic.jar found in the lib fo lderof the JCDK to find out if your code compiles. Note that the name of the .jar may differ for different versions of the JCDK - I've used the one for Java Card version 3, where the functionality has been split into the connected and classic API.
I strongly recommend you follow some tuturials and - of course - the book Java Card Technology for Smart Cards: Architecture and Programmer's Guide.
I have created a WPF application. I want to make installer file (exe) for this application.
This application also uses some other 3rd party files (bat files); which i have zipped.
I want to unzip this file while installing and set the path of unzipped dir in Path variable also.
I got a link http://www.msdotnet.co.in/2012/06/how-to-create-setup-fileexe-file-from.html#.U3GT7YGSzxp
which tells how to create a installer file.
How to achieve unzipped part and setting environment vairable while making installer?
Thanks
Take a look at wix from Microsoft.
It can be run standalone, but is great run from within visual studio. You write a small xml file detailing what you want installed, and it does the rest.
To run a zip command, use a CustomAction.
Search for Install-shield. It is old tool but having good scripting capability like what you are expecting (i.e) Unzipping the folder and dealing with path environment variable
Use Inno Setup (http://jrsoftware.org/isinfo.php) or NSIS (http://nsis.sourceforge.net/Main_Page).
Both are free (open source) installation systems with many possibilities and huge community around (even here on SO).
They are really easy to use (especially Inno) and they are powerful so it is easy to achieve your required functionality.
Take a look at Stall:
https://github.com/jamesqo/Stall
It's an OSS project that lets you install your app from the command line, no configuration required.
Example Usage:
stall path/to/YourApp -e YourApp.exe -i YourApp.exe
This installs your app straight to the user's computer without having to make an intermediary MSI.
If you have to unzip files as well, you may want to just consider a simple batch files that downloads the binaries + unzips the contents + runs Stall.