Some easy code here to help students
This class converts a input letters into a line of ASCII graphics letters.
PolishCalc uses Reverse Polish Notation to get an expression as a string and calc it.
WebParser uses jsoup to parse url, go through some pages and download pictures from there.
This class parses url to find dependencies and builds Graphviz .dot file. Then it tries to make a picture from .dot. Dependencies are .css and .js files. Works nice on Linux.
Modify the code and implement into your project. You may run this stuff "as is" just usning this code:
ASCIItoStr.convert();
PolishCalc.calc();
WebParser.parse();
WebGraphBuilderEasy.build("Your URL");