1. 1. Java
2. 2. First steps
3. 1. 2.1. Java Installation
   2. 2.2. Java Installation on Ubuntu Linux
   3. 2.3. Java from Oracle
   4. 2.4. Hello World in Java
   5. 2.5. Java Data Types
   6. 2.6. Java Variable declaration
   7. 2.7. Java comments
   8. 2.8. Java prompt - read from STDIN
   9. 2.9. Convert string to number
   10. 2.10. Add Command line values
   11. 2.11. Add Command line integers
   12. 2.12. Java for-loop
   13. 2.13. Java while-loop
   14. 2.14. Java command line arguments
   15. 2.15. Concatenate strings in Java
   16. 2.16. Use class
   17. 2.17. Method signature
   18. 2.18. Use Java class from another class
   19. 2.19. Calc
   20. 2.20. Cat
   21. 2.21. Grep
   22. 2.22. Read file
   23. 2.23. Read line
   24. 2.24. Regex
   25. 2.25. Regex Test harness
   26. 2.26. Split a string
   27. 2.27. Java: Run external program
   28. 2.28. Method Overloading
   29. 2.29. Public instance attributes
   30. 2.30. Getter for private instance attributes
   31. 2.31. Setter for private instance attributes
   32. 2.32. Compile and Run in shell
   33. 2.33. Static or Class attribute
   34. 2.34. inheritance
   35. 2.35. Combination
4. 3. Other
5. 1. 3.1. Other examples
   2. 3.2. Regex
   3. 3.3. Split
   4. 3.4. Substring
   5. 3.5. Mixing types in add