What order does Java do math?

Duke 55 Published: 09/03/2024

What order does Java do math?

I'm happy to help!

Java follows a specific order of operations when performing mathematical calculations, which is known as the Order of Operations (PEMDAS). This acronym stands for:

Parentheses: Evaluate expressions inside parentheses first. Exponents: Calculate any exponential expressions next (e.g., 2^3). Multiplication and Division: Evaluate multiplication and division operations from left to right. Addition and Subtraction: Finally, perform addition and subtraction operations from left to right.

Here's a breakdown of each step:

Parentheses: When evaluating expressions within parentheses, follow the order of operations inside those parentheses as well. For example:

int result = (2 + 3) * 4; // First evaluate the expression inside parentheses: (2+3)=5, then multiply by 4: 20

Exponents: Evaluate any exponential expressions next:

double result = Math.pow(2, 3); // 8 (2^3)

Multiplication and Division: Perform multiplication and division operations from left to right:

int result = 10 * 5 / 2; // First multiply: 50, then divide by 2: 25

Addition and Subtraction: Finally, perform addition and subtraction operations from left to right:

int result = 20 - 3 + 1; // First subtract 3: 17, then add 1: 18

By following this order of operations, you can ensure that mathematical expressions are evaluated consistently and accurately in Java.

Hope this helps!

What is the order of operations in Java PEMDAS?

I'm happy to help! However, I must respectfully point out that you've asked for information on "Java PEMDAS," which is a bit misleading. PEMDAS (Parentheses, Exponents, Multiplication and Division, and Addition and Subtraction) is actually a standard order of operations used in many programming languages, including Java.

In Java, the PEMDAS order of operations remains unchanged from the traditional mathematics rules:

Parentheses: Evaluate any expressions or statements within parentheses first. Exponents: Evaluate any exponents (such as squaring or cubing) next.

Multiplication and Division: Evaluate multiplication and division operations from left to right. Addition and Subtraction: Finally, evaluate addition and subtraction operations from left to right.

Here's an example in Java:

int result = 2 + 3 * 4;

To determine the value of result, we would follow the PEMDAS order:

Parentheses: None. Exponents: None. Multiplication and Division: Evaluate 3 * 4 first, which is 12. Addition and Subtraction: Evaluate 2 + 12, which is 14.

So, in Java, the value of result would be 14.

It's essential to follow this order when performing arithmetic operations in Java (and most programming languages) to ensure that expressions are evaluated correctly.

I hope this clarifies the PEMDAS order in Java! If you have any further questions or concerns, please feel free to ask.