Java Tutorial: Operators, Types of Operators & Expressions in Java

• An operator is a symbol that the compiler to perform a specific operation on operands.
• Example : a + b = c
• In the above example, 'a' and 'b' are operands on which the '+' operator is applied.

Types of operators :

1. Arithmetic Operators :

• Arithmetic operators are used to perform mathematical operations such as addition, division, etc on expressions.
• Arithmetic operators cannot work with Booleans.
• % operator can work on floats and doubles.
• Let x=7 and y=2

2. Comparison Operators :

• As the name suggests, these operators are used to compare two operands.
• Let x=7 and y=2

3. Logical Operators :

• These operators determine the logic in an expression containing two or more values or variables.
• Let x = 8 and y =2

4. Bitwise Operators :

• These operators perform the operations on every bit of a number.
• Let x =2 and y=3. So 2 in binary is 100, and 3 is 011.

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(64>5 && 64>98);
        System.out.println(64>5 || 64>98);

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

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