| 2. Data Type |
| | 2. 1. Data Type Introduction |
| | 2. 2. Boolean |
| | 2. 3. Integer Data Type |
| | 2. 4. Byte |
| | 2. 5. Short |
| | 2. 6. Integer |
| | 2. 7. Long |
| | 2. 8. Hex Oct |
| | 2. 9. Float Point Data Type |
| | 2. 10. Float |
| | 2. 11. Double |
| | 2. 12. Number Format |
| | 2. 13. Cast |
| | 2. 14. Data Type Conversion |
| | 2. 15. Wrapper Classes |
| | 2. 16. Autobox Unbox |
| | 2. 17. String |
| | 2. 18. String Start End |
| | 2. 19. String Replace |
| | 2. 20. String Concatenation |
| | 2. 21. String Compare |
| | 2. 22. String Tokenize |
| | 2. 23. Extracting String Characters |
| | 2. 24. Quote |
| | 2. 25. String vs Byte Array |
| | 2. 26. String vs Char Array |
| | 2. 27. Escape Sequences |
| | 2. 28. Convert from String |
| | 2. 29. Convert to String |
| | 2. 30. Date |
| | 2. 31. Calendar |
| | 2. 32. Gregorian Calendar |
| | 2. 33. Date Format |
| | 2. 34. enum |
