I’m working with the ILOG CPLEX library in Java to solve an ILP problem. I’m using the default settings and did not adjust any parameters. I used the example code which I found online in samples for my main loop: I launched my jar on an Ubuntu 14 system with 24GB RAM and let it solve larger proble…
Tag: java
Cannot pass STDIN using shell_exec() in PHP
I am a complete beginner in PHP. I want to execute a java .jar file using PHP.The jar file takes input from STDIN and generates the output at STDOUT.To execute the jar file this is what I do in my Ubuntu Linux terminal: This works perfect.However when I replicate this in PHP as: This sends $p the output gener…
java.lang.ClassNotFoundException with log4j
I am trying my first project with gradle. My project has a dependency with log4j-1.2.17.jar After my project is built, a jar file is generated. I try to run this with the following: But if I build a fatjar with gradle, the fatjar works without specifying any classpath. The dependency statement in gradle is li…
After update linux to version 4.2, Java write “Failed to write core dump”?
I work on one programm, that need to java 7. But when I update archlinux to 4.2 (from 4.1) ,when I start the programm, java write me: Java not update!! What happend with java and what do I need? EDIT: I found, when start the programm, he added keys -J-XX:PermSize=200m -J-XX:MaxPermSize=256m. When I delete th…
Platform specific code in Eclipse
We’re developing a java desktop/Eclipse RCP application with a graph-layout component. We faced issues with the GUI scaling on newer(8, 8.1, 10) versions on windows, it appeared that one can only retrieve the scaling factor through win32 api calls, so we added a little DLL that does this and call it thr…
Oracle Service Bus maven build time 30 times slower on Linux than on Windows
I currently have a OSB project with a set of 21 modules that take roughly 4 minutes to build on my local 2 core/12GB ram laptop running Windows using no threading, just a simple build install. It takes 10-20 seconds per module. When building this exact same project on my CI server running on Ubuntu, with 8 co…
How to list all SSL/TLS certificates programmatically in Linux?
To load the certificates in Windows I use: in Android: How can I do that in linux? If it can’t be done in Linux with this API how can I do it in another way? Answer You can find them under /etc/ssl/certs. Simply do a ls -l tells you more. They are all in .pem or .crt. Easy to read
Application Development for Windows and Linux [closed]
Closed. This question needs to be more focused. It is not currently accepting answers. Want to improve this question? Update the question so it focuses on one problem only by editing this post. Closed 7 years ago. Improve this question Is it possible to create programs in Java and run on both Linux and Window…
How to get numeric keypad arrows working with java applications on Linux
The arrow keys on the numeric keypad do not work with Java applications on Linux. Strangely enough, the Home, End, PgUp, PgDn, Ins, Del all work. This is especially annoying when using Intellij for programming. How do you get the arrow keys working? Answer Physical keys on a keyboard are mapped to key codes u…
Detecting the linux distribution from java
Is there a (preferably efficient, i.e. without executing binaries and parsing their outputs) way of detecting the Linux distribution in Java? As far as I know, System provides os.name, os.arch and os.version, which don’t seem to help. For a typical Ubuntu installation they get these values: os.name: amd…