Chapter 2- Operators, Types of Operators & Expressions in Java

Operators are used to perform operations on variables and values.

7 + 11 = 18

(Here, 7 and 11 are operand and "+" is the operator and 18 is the result)

Types of operators :

1. Arithmetic Operators => [+, -, *, /, %, ++, --]
2. Assignment Operators => [=, +=]
3. Comparison Operators => [==, >=, <=]
4. Logical Operators => [&&, ||, !]
5. Bitwise Operators => [&, |] (operates bitwise)

Arithmetic operators cannot work with Booleans.

% operator can work on floats and doubles.

Precedence of operators

The operators are applied and evaluated based on precedence. For example (+, -) has less precedence compared to (*, /). Hence * and / are evaluated first.

In case we like to change this order, we use parenthesis ().

Code as Described in the Video 

package com.company;

public class CWH_Ch2_Operators {
    public static void main(String[] args) {
        // 1. Arithmetic Operators
        int a = 4;
        // int b = 6 % a; // Modulo Operator
        // 4.8%1.1 --> Returns Decimal Remainder

        // 2. Assignment Operators
        int b = 9;
        b *= 3;
        System.out.println(b);

        // 3. Comparison Operators
        // System.out.println(64<6 4.="" logical="" operators="" system.out.println="">5 && 64>98);
        System.out.println(64>5 || 64>98);

        // 5. Bitwise Operators
        System.out.println(2&3);
        //        10
        //        11
        //        ----
        //        10
    }
}