primitive vs wrapper classes in java
Differences:
1. Wrappers classes are object
2. null can only be assigned to classes
3. Wrapper class does have methods
4. Primitives does have default values
default value of primitives:
byte, short, int, long ==> 0
float, double ==> 0.0;
boolean ==> false;
char ==> space
5. Default values of wrapper class: null