Added derby and tomcat posts.

Author: denevell

apache-derby-setup.md

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+title: Apache Derby setup and ij usage
+tags: derby,derby-setup
+
+First download Apache Derby from its website. And put the both to the unzipped folder in your environment, including your PATH.
+
+		export DERBY_HOME = /your/path
+		export PATH=$PATH:$DERBY_HOME/bin
+
+You also need to set the derby property to say the database is on localhost for the 'ij' property:
+
+		set DERBY_OPTS=-Dij.protocol=jdbc:derby://localhost/
+
+Now you should be able to run the 'ij' program. Exit it via issuing 'quit;'.
+
+Open up ij, and create a new database:
+
+		ij> CONNECT 'jdbc:derby:firstdb;create=true';
+
+In the current directory you'll have a firstdb/ directory. This constitutes the database. Don't touch the files within!
+
+You can then create a new simple table, insert a value and print the table using the following usual SQL:
+
+
+		ij> create table one (text varchar(500));
+		0 rows inserted/updated/deleted
+		ij> insert into one values ('hello');
+		1 row inserted/updated/deleted
+		ij> select * from one;
+		TEXT                                                                                                                            
+		--------------------------------------------------------------------------
+		hello
+
+Since ij doesn't have a command history, you may want to issue the commands from the command line instead:
+
+		$ echo "connect 'jdbc:derby:firstdb'; select * from one;" | ij
+		ij version 10.10
+		ij> ij> TEXT                                                                                                                            
+		--------------------------------------------------------------------------
+		hello                                                                                                                           
+
+		1 row selected

tomcat7-debug-eclipse.md

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+title: Tomcat 7: Debugging in Eclipse
+tags: tomcat,tomcat-debug
+
+In your catalina.sh file (if you're using unix), you must place this at the top:
+
+		export JAVA_OPTS="-Xdebug -Xrunjdwp:transport=dt_socket,address=8000,server=y,suspend=n"
+
+Note the line may contain other options, but the above must be there nonetheless.
+
+Now stop and start tomcat.
+
+Then go into Debug Configurations in Eclipse and add a new Remove Java Application. Enter the following details:
+
+		host: localhost
+		post: 8000
+
+You can now start this debug configuration. Your application will stop and eclipse will move to a breakpoint added in eclipse should you hit on.