Mostly from the loose nut at the keyboard, Typing errors (compile time errors). Don't know what you are doing errors (compile time errors and run time errors).
Only one type: if (<condition>) <statement1> [else <statement2>] of course statements can be single statements, blocks, empty statements, etc. Example: if (i1); else for (j=1;...
Every class, including abstract classes, MUST have a constructor. The different types are:a. Regular constructorsb. Overloaded constructors andc. Private constructors
Every class, including abstract classes, MUST have a constructor. Hard Code that into your brain. But just because a class must have one, doesn't mean the programmer has to type it. A constructor...