Conversions

Narrowing, Widening, when do conversions occur, what happens.

1. Widening Conversions: no loss of 'information'
2. Examples:
   1. char to int or double
   2. int to double
3. Narrowing Conversions: potential loss of 'information'
4. Examples:
   1. double to char or int
5. booleans undergo no conversions

6. Primitive DATA TYPES: When does conversion occur?
   1. Assignment Conversion: Widening automatic
   2. Method Invocation Conversion: Widening automatic
   3. Casting Conversion: can widen/narrow with explicit statement
   4. Numeric Promotions in expressions (=-/*): If either operand is of type double, the other is converted to double. Otherwise, both operands are converted to type int.

   	char	int	double	boolean
   char	auto	auto	auto	none
   int	cast	auto	auto	none
   double	cast	cast	auto	none
   boolean	none	none	none	auto

7. STRINGS: String Conversion (+ operation when one operand is string) takes any type to string. To go from a String to a numeric type, use Integer.parseInt() to int, Double.parseDouble() to double, etc.