Do you know some Java basics?

Java is called ‘Platform Independent Language’ as it primarily works on the principle of ‘compile once, run everywhere’.

Keywords are specially reserved words that can not be used for naming a user-defined variable.

For example: class, int, for, etc.

Operator ++ acts like a "plus 1" (increment), so g becomes 4 and when multiplied by 8 gives 32.

The Xms flag has no default value, and Xmx typically has a default value of 256MB. A common use for these flags is when you encounter a java.lang.OutOfMemoryError.

String(chars) is a constructor of class string, it initializes string s with the values stored in character array chars, therefore s contains “abc”.

reverse() method reverses all characters. It returns the reversed object on which it was called.

Public, private, protected and default are the access modifiers.

Char occupies 16-bit in memory, so it supports 2¹⁶ i:e from 0 to 65535.