Java Arithmetic Operators: Examples and Code Snippets

📚 Quick Study Guide

• ➕ Addition: Adds two operands. Example: `a + b`
• ➖ Subtraction: Subtracts the second operand from the first. Example: `a - b`
• multiplication Multiplication: Multiplies two operands. Example: `a * b`
• ➗ Division: Divides the first operand by the second. Example: `a / b`
• 💯 Modulus: Returns the remainder of a division. Example: `a % b`
• ➕= Addition Assignment: Adds the right operand to the left operand and assigns the result to the left operand. Example: `a += b` is equivalent to `a = a + b`
• ➖= Subtraction Assignment: Subtracts the right operand from the left operand and assigns the result to the left operand. Example: `a -= b` is equivalent to `a = a - b`
• ✖️= Multiplication Assignment: Multiplies the right operand with the left operand and assigns the result to the left operand. Example: `a *= b` is equivalent to `a = a * b`
• ➗= Division Assignment: Divides the left operand by the right operand and assigns the result to the left operand. Example: `a /= b` is equivalent to `a = a / b`
• 💯= Modulus Assignment: Performs modulus operation using two operands and assigns the result to the left operand. Example: `a %= b` is equivalent to `a = a % b`
• ➕➕ Increment: Increases the value of a variable by 1. Example: `a++`
• ➖➖ Decrement: Decreases the value of a variable by 1. Example: `a--`

Practice Quiz

1. What is the result of `10 % 3` in Java?
   1. A. 3
   2. B. 1
   3. C. 3.33
   4. D. 0
2. Which operator is used for division in Java?
   1. A. /
   2. B. \
   3. C. %
   4. D. *
3. What is the value of `x` after executing `int x = 5; x += 3;`?
   1. A. 5
   2. B. 3
   3. C. 8
   4. D. 2
4. What is the purpose of the modulus operator (`%`)?
   1. A. To divide two numbers
   2. B. To multiply two numbers
   3. C. To find the remainder of a division
   4. D. To find the square root of a number
5. Which of the following is the correct way to increment a variable `count` by 1 in Java?
   1. A. count -
   2. B. count = count - 1
   3. C. count++
   4. D. count + 1
6. What will be the output of the following Java code snippet? java int a = 15; int b = 4; System.out.println(a / b);
   1. A. 3.75
   2. B. 4
   3. C. 3
   4. D. Error
7. What is the result of the expression `5 * 2 + 3` in Java?
   1. A. 10
   2. B. 13
   3. C. 16
   4. D. 11