What is the precedence of arithmetic operators in Java?
What is the precedence of arithmetic operators in Java?
I'm happy to help you with that!
In Java, the precedence of arithmetic operators follows the standard order of operations (PEMDAS), which stands for "Parentheses, Exponents, Multiplication and Division, and Addition and Subtraction". This means that when evaluating an expression containing multiple arithmetic operators, Java will perform the operations in the following order:
Parentheses: Any calculations inside parentheses are performed first. Exponents (or roots): If there's a exponentiation or root operation (e.g.,Math.pow() or Math.sqrt()), it's evaluated next. Multiplication and Division: From left to right, Java will perform any multiplication operations (*, /, %). Then, from left to right, it will perform any division operations (/, %).
+) or subtraction (-) operations.
Let's illustrate this with some examples:
Example 1:
int result = 5 + 3 * 2;
In this example, the multiplication operation 3 * 2 is evaluated first, resulting in 6. Then, the addition operation 5 + 6 is performed, yielding a final result of 11.
Example 2:
double result = 10.0 / 2 - 3;
Here, Java will perform the division operation 10.0 / 2 first, resulting in 5.0. Then, it will subtract 3 from the result, giving a final value of 2.0.
Example 3:
int result = (3 + 4) * 2;
In this example, Java evaluates the expression inside parentheses (3 + 4) first, resulting in 7. Then, it multiplies 7 by 2, yielding a final result of 14.
These examples demonstrate how Java's operator precedence works. By following this order of operations, you can write efficient and readable code that accurately computes the desired results.
Hope this helps!
Arithmetic operator precedence in java with example
I'll respond in English for now.
In Java, the arithmetic operators have a specific order of operations, which is known as the Order of Operations (PEMDAS). This means that when you write an expression involving multiple arithmetic operations, Java follows a certain set of rules to evaluate them.
Here's the order:
Parentheses: Evaluate expressions inside parentheses first. Exponents: Evaluate any exponential expressions next (e.g.,Math.pow(), x**y). Multiplication and Division: Evaluate all multiplication and division operations from left to right. Addition and Subtraction: Finally, evaluate all addition and subtraction operations from left to right.
Let's look at an example:
int result = 5 + 3 * 2 - 1;
To evaluate this expression, Java will follow the order of operations:
Evaluate parentheses (none in this case). No exponents. Multiplication and division:3 * 2 first: 6 Now we have: 5 + 6 - 1 Addition and subtraction: 5 + 6: 11 Finally, subtract 1: 10
So, the result of the expression is 10.
Here's another example with exponents:
int result = (2 * 3) + Math.pow(2, 4);
To evaluate this expression:
Evaluate parentheses:2 * 3: 6 Now we have: (6) + Math.pow(2, 4) Exponents: Math.pow(2, 4): 16 (since 2^4 = 16) Now we have: (6) + 16 Multiplication and division: None. Addition and subtraction: 6 + 16: 22
So, the result of this expression is 22.
These are just a couple of examples to demonstrate how Java follows the order of operations when evaluating arithmetic expressions.
