Programming

How to Connect to MySQL in JSP

ByEric Ma

We use tomcat as the container used for instructions in the post. 1) Download the driver mysql-connector-java-*.*.*-bin.jar and put it into WEB-INF/lib/, and remember to restart tomcat. 2) The example code as follows. String driverName=”com.mysql.jdbc.Driver”; String userName=”username”; String userPasswd=”password”; String dbName=”dbname”; String tableName=”tablename”; String url=”jdbc:mysql://localhost/”+dbName+”?user=”+userName+”&password=”+userPasswd; Class.forName(“com.mysql.jdbc.Driver”).newInstance(); Connection conn=DriverManager.getConnection(url); Statement statement = conn.createStatement(); String sql=”SELECT *…

Google PageRank Update 2011

ByEric Ma

Update 3: Fclose.com sees minor PageRank updates on November 8, 2011. For example, some tooles and some posts get PageRank of 3 from 0. Update: Confirmed that Google updates the PageRank in toolbar on November 8 2011. Update 2: Google updates the PageRank in toolbar on August 05 2011. Update 1: Google updates the PageRank…

How to Redirect WordPress Feed to Feedburner Using .htaccess

ByEric Ma

.htaccess is a powerful tool. Let’s look at how to using .htaccess to redirect WordPress feeds to feedburner. Let’s use my blog as the example. The WordPress’s feed url of my blog is https://www.systutorials.com/feed/. Now I want to redirect it to feedburner with url http://feeds.feedburner.com/systutorials . The idea is quite straightforward: For every request to…

Emacs Tips and Howtos

ByEric Ma

With Emacs, I feel happy. I love the rich functions of Emacs, such as compiling, quickly jumping to the lines with compilation error and debugging with gdb, and more. I ever wrote small tips posts about Emacs before. But it is a good idea to put them together and keep adding new ones. Here comes…

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How to Generate and Apply Patches using diff and patch on Linux

ByEric Ma

`diff` and `patch` are tools to create patches and apply patches to source code, which is widely used in the open-source world, such as Linux kernel and application. patch: applying patches To apply a patch to a single file: $ patch < foo.patch If the foo.patch does not identify the file the patch should be...

Setting MATE as Default Desktop Environment for startx on Fedora

ByEric Ma

I ever discussed Starting KDE from Command Line by startx for KDE and GNOME. Recently, I installed MATE desktop on Fedora 17 and am very happy with it—dear, Gnome 2 is back. However, I checked the /etc/X11/xinit/Xclients script which is called by ‘startx’ and it only includes ‘startkde’ and ‘gnome-session’ without support to MATE. But…