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Index of Answers

J - Demonstration Java files included.
A - Demonstration applet included.
  1. Dealing with array out of bounds.
  2. What is the null string? - see
  3. How do you check if two strings are equal? J
  4. What's the difference between Java and JavaScript?
  5. Using ++ and -- A
  6. ELSE without IF
  7. String not terminated at end of line
  8. Undefined variable: <name>
  9. Undefined variable or class name: <name>
  10. Invalid type expression
  11. Method <name> not found in class <class name>
  12. Incompatible type for <thing>. Can't convert <type> to <other type>
  13. Wrong number of arguments in method
  14. Incompatible type for <thing>. Explicit cast needed to convert <type> to <another type>
  15. Unbalanced parentheses
  16. Missing term
  17. Attempt to reference method <method name> in class <class name> as an instance variable.
  18. Statement not reached
  19. 'case' or 'default'outside switch statement
  20. Method <name> requires a method body. otherwise declare it as abstract
  21. Return required
  22. Hello World J
  23. Making Your Own Exceptions J
  24. Making Your Own Classes
  25. Focus on: arrays J
  26. Attempt to reference field <name> in a <array>
  27. [] can only be applied to arrays. It can't be applied to <type>
  28. Array index required.
  29. Making applets J
  30. Switch statements J
  31. Public, private and protected
  32. Basic types
  33. Random Numbers
  34. Static
  35. Reference to variable <variable> in class <class> as if it were a method
  36. void
  37. "<char>" Vs '<char>'
  38. Null pointer exceptions
  39. Using += , -= , *= , /= and %=A
  40. Method <type> <name> requires a method body. Otherwise declare it abstract.
  41. Catch not reached
  42. Using <<, >> and >>> A
  43. "class" or "interface" keyword expected
  44. <type> cannot be dereferenced.
  45. Missing method body, or declare abstract
NOTE: The Java section is mostly in maintenence mode. I don't have time to work on it right now. Errors will be corrected if pointed out, but they are not actively being searched for. Newer site features, like alternate stylesheets, may cause problems with these pages.