JTable Sorting

http://www.codejava.net/java-se/swing/6-techniques-for-sorting-jtable-you-should-know

http://www.java2s.com/Code/Java/Swing-JFC/JTablesorterclickthetableheadertosortacolumnandatable.htm

http://grepcode.com/file/repo1.maven.org/maven2/org.swinglabs/swingx/0.9.2/org/jdesktop/swingx/JXTable.java

http://www.docjar.com/html/api/sun/swing/table/DefaultTableCellHeaderRenderer.java.html

http://www.javapractices.com/apps/stocksmonitor/javadoc/src-html/hirondelle/stocks/table/TableSortIndicator.html

http://esus.com/sorting-the-rows-in-a-jtable-by-clicking-on-a-column-header/