3.1-Understanding Java Operators

Question 1

What is a Java operator?

Answer 1

A Java operator is a special symbol that applies an operation to a set of values, literals, or variables, —referred to as operands—and returns a result.

Question 2

What is an operand?

Answer 2

The term operand, refers to the value, literal or variable an operation is applied to via an operator

Question 3

What is call the output of the operation?

Answer 3

It’s simply referred to as the result.

Question 4

Are Java operators evaluated from left-to-right order?

Answer 4

Not necessarily, they follow the pre-defined Order of operator precedence.

Question 5

What is Operator Precedence?

Answer 5

Determines what order operators should be evaluated.

Question 6

What can alter the Operator precedence?

Answer 6

parentheses

Question 7

🤯️⚠️📣️ What are the Operators precedence?

Answer 7

0°Parentheses: ()-
1° Unary: (***Post), Pre, ~, !, +, -
2° Arithmetic: *, /, %, +, -  (***Numeric Promotion)
3° ShiftBitwise: >>, <>>
4° Relational: , >=, (***instanceof)
5° Comparisson: ==, !=
6°  Logical(Bitwise and Short-circuit): &, |, ^, &&, ||
7° Ternary: ? :
8° Assignment: =, +=, -=, *=, /= 
    -> ⚠️Internal Type casting
    -> ⚠️Unperformed Side Effects
    -> ⚠️Composed Assignment ❌(Inline-declaration)

Question 8

How to change the operation precedence?

Answer 8

By wrapping parentheses around the sections we want
to be evaluated first.

⚠️📣️ Make sure they are always valid and balanced.
✅Only parentheses ( ) ❌ [ ], < >, \ /, { }