Shruti Rawat questions

• Why can int/byte/short/long be converted to float/double without typecasting but vice-versa not possible
• from where does public static void main gets called?
• Integer i=3 vs Integer i= new Integer (3) [duplicate]
• How to check for string having only spaces in javascript
• How to move a method from a class to another class when two classes are not at all related

Shruti Rawat answers