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What is the difference between JVM, JDK, JRE & OpenJDK?
...esn't understand Java source code; that's why you need compile your *.java files to obtain *.class files that contain the bytecodes understood by the JVM. It's also the entity that allows Java to be a "portable language" (write once, run anywhere). Indeed, there are specific implementations of the J...
Real World Example of the Strategy Pattern
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What about this:
You have to encrypt a file.
For small files, you can use "in memory" strategy, where the complete file is read and kept in memory ( let's say for files < 1 gb )
For large files, you can use another strategy, where parts of the file are read...
How to fix a locale setting warning from Perl?
...der host, set the LANG environment variable in your shell's initialization file.
Modify your environment on the client side, e.g., rather than ssh hunter2, use the command LANG=C ssh hunter2.
If you have admin rights, stop ssh from sending the environment variables by commenting out the SendEnv LANG...
“Connection for controluser as defined in your configuration failed” with phpMyAdmin in XAMPP
..., where you should find a sub-directory called sql.
In sql you will find a file called create_tables.sql. Open it in a text editor.
In phpMyAdmin, select the phpmyadmin database and click on the "SQL" tab.
Copy/paste the entire text from create_tables.sql into the text box, and run the query.
Open t...
转：postfix安装Q&A - 更多技术 - 清泛网 - 专注C/C++及内核技术
...安装POSTFIX2.2.7出错
[root@mail postfix-2.2.7]# make
make -f Makefile.in MAKELEVEL= Makefiles
(echo "# Do not edit -- this file documents how Postfix was built for your machine."; /bin/sh makedefs) >makedefs.tmp
No <db.h> include file found.
Install the appropriate db*-devel packa...
MySQL: Enable LOAD DATA LOCAL INFILE
... running Mysql 5.5 on Ubuntu 12 LTS. How should I enable LOAD DATA LOCAL INFILE in my.cnf?
18 Answers
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Configure apache to listen on port other than 80
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Open httpd.conf file in your text editor.
Find this line:
Listen 80
and change it
Listen 8079
After change, save it and restart apache.
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How to set the JDK Netbeans runs on?
...'s tip, I found the solution in the "suggested" link, update the following file (replace 7.x with your Netbeans version) :
C:\Program Files\NetBeans 7.x\etc\netbeans.conf
Change the following line to point it where your java installation is :
netbeans_jdkhome="C:\Program Files\Java\jdk1.7xxxxx"
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How to make --no-ri --no-rdoc the default for gem install?
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You just add the following line to your local ~/.gemrc file (it is in your home folder):
gem: --no-document
or you can add this line to the global gemrc config file.
Here is how to find it (in Linux):
strace gem source 2>&1 | grep gemrc
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Export CSS changes from inspector (webkit, firebug, etc)
...ast as of Chrome v14.
While in the Elements section, just click on the "filename:linenumber" link next to the CSS rules. The CSS file that shows up will contain all of the modifications.
This place exactly:
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