Instead of the modulo operator, which has slightly different semantics, for non-negative integers, you can use the remainder operator %. For your exact example:
if ((a % 2) == 0)
{
isEven = true;
}
else
{
isEven = false;
}
This can be simplified to a one-liner:
isEven = (a % 2) == 0;
Baeldung
baeldung.com › home › java › core java › the modulo operator in java
The Modulo Operator in Java | Baeldung
September 3, 2025 - The remainder is what remains after dividing 11 (the dividend) by 4 (the divisor), which in this case is 3. For the same reason a division by zero isn’t possible, it’s not possible to use the modulo operator when the right-side argument is zero.
The Renegade Coder
therenegadecoder.com › code › the-remainder-operator-works-on-doubles-in-java
The Remainder Operator Works on Doubles in Java – The Renegade Coder
May 23, 2020 - Before I get into the story, I wanted to come along and make a distinction between the remainder operator and the modulus operator. In Java, there is no modulus operator. Instead, % is the remainder operator. For positive numbers, they are ...
modulo - What's the syntax for mod in Java? - Stack Overflow
The modulus operator in Java is the percent character (%). Therefore taking an int % int returns another int. The double equals (==) operator is used to compare values, such as a pair of ints and returns a boolean. This is then assigned to the boolean variable 'isEven'. Based on operator precedence the modulus will be evaluated before the comparison. ... It's a remainder ... More on stackoverflow.com
How does the modulus operator work?
This is, in Java code, what the computer actually does: while(a >= b) { a -= b; } return a; //Remainder It simply subtracts b from a until it can't subtract b from a without a going into negative. It then returns the remainder. It's useful to see for example if a number is even. x % 2 will return a remainder of 1 for all odd numbers and 0 for all even numbers. This is why you often see code like boolean even = x % 2 == 0; in code. More on reddit.com
6
5
September 19, 2015Beginner Java: Using the Remainder Operator
Hi everyone, i just started Java, and I have an assignment to do which I have completed, except for one part that I'm hoping to get help with. the assignment is basically to keep track of this fiction... More on forums.oracle.com
How to find remainder without using modulo operator %?
To find x % y While x > y X -= y Then x is the remainder You can use a helper variable if you don't wanna modify X I used this before I knew about modulo..... More on reddit.com
26
0
July 1, 2020Videos
GeeksforGeeks
geeksforgeeks.org › java › modulo-or-remainder-operator-in-java
Modulo or Remainder Operator in Java - GeeksforGeeks
January 24, 2026 - The modulo operator (%) in Java is an arithmetic operator used to find the remainder after division of one number by another.
Codedamn
codedamn.com › news › java
What is Modulo/Modulus/Remainder Operator In Java?
November 20, 2023 - Java, with its widespread use in enterprise and Android application development, remains a language of choice for many programmers. An operator that frequently comes in handy is the modulo operator, denoted by the % sign. It provides the remainder ...
Top answer 1 of 16
387
Instead of the modulo operator, which has slightly different semantics, for non-negative integers, you can use the remainder operator %. For your exact example:
if ((a % 2) == 0)
{
isEven = true;
}
else
{
isEven = false;
}
This can be simplified to a one-liner:
isEven = (a % 2) == 0;
2 of 16
111
Here is the representation of your pseudo-code in minimal Java code;
boolean isEven = a % 2 == 0;
I'll now break it down into its components. The modulus operator in Java is the percent character (%). Therefore taking an int % int returns another int. The double equals (==) operator is used to compare values, such as a pair of ints and returns a boolean. This is then assigned to the boolean variable 'isEven'. Based on operator precedence the modulus will be evaluated before the comparison.
IONOS
ionos.com › digital guide › websites › web development › java modulo
How to use the Java modulo operator - IONOS
December 18, 2024 - The Java modulo operator allows you to easily determine the remainder from a division operation. We show you how the operator works using examples.
Coderanch
coderanch.com › t › 785725 › java › Modulus-Operator
Modulus Operator (Java in General forum at Coderanch)
As you know from your topic title, ... or mod. Let's remind ourselves of the definition: mathsisfun.com wrote:The modulo (or "modulus" or "mod") is the remainder after dividing one number by another....
Runestone Academy
runestone.academy › ns › books › published › apcsareview › VariableBasics › operators.html
3.5. Operators — AP CSA Java Review - Obsolete
When Java sees you doing integer division it assumes you want an integer result so it throws away anything after the decimal point in the answer. The percent sign operator (%) is the modulo or remainder operator. The modulo operator (x % y) returns the remainder after you divide x (first number) ...
Edureka
edureka.co › blog › mod-method-in-java
Modulus in Java | Remainder or Modulus Operator in Java | Edureka
July 5, 2024 - Modulus in Java is an Operator. % is also known as the modulus or remainder operator. The % operator returns the remainder of two numbers
iO Flood
ioflood.com › blog › java-modulus-modulo
Java Modulus/Modulo: Your Guide to Remainder Operations
February 29, 2024 - The modulus operator, represented as %, is a mathematical operator that’s used to find the remainder of a division operation. In Java, it’s often used to solve problems where you need to divide two integers and are interested in the remainder.
Reddit
reddit.com › r/javahelp › how does the modulus operator work?
r/javahelp on Reddit: How does the modulus operator work?
September 19, 2015 -
I apologise in advance if this is a stupid question, but I've looked everywhere and every explanation I've found has been way above my pay grade.
I've been studying java for a grand total of one week. My lecturer gave us notes that cover the modulus, but after reading them I'm still none the wiser. The examples he gives don't seem consistent and I'm just getting more and more confused.
The exercise involves trying convert 174 pounds into stone and pounds using the modulus, but I honestly have no idea where the modulus goes or how it works, or what numbers I'm supposed to put where. I'd be grateful for literally any explanation at this point.
Top answer 1 of 4
4
This is, in Java code, what the computer actually does: while(a >= b) { a -= b; } return a; //Remainder It simply subtracts b from a until it can't subtract b from a without a going into negative. It then returns the remainder. It's useful to see for example if a number is even. x % 2 will return a remainder of 1 for all odd numbers and 0 for all even numbers. This is why you often see code like boolean even = x % 2 == 0; in code.
2 of 4
1
Hi! I think this site explains the modulo operator quite well. The gist of using the operator is to grab the remainder of two numbers. For example, 10 % 3 would give a result of 1 because 10 divided by 3 leaves a remainder of 1. Hope that helps.
Medium
medium.com › @AlexanderObregon › what-is-javas-modulo-and-how-to-use-it-10e8e464d974
What Is Java’s Modulo (%) and How to Use It | Medium
April 1, 2025 - The .remainder() method follows the same rule as the % operator, where the result’s sign matches the dividend. The .mod() method, on the other hand, gives you a non-negative result, which is more in line with how modulo works in pure mathematics.
Java67
java67.com › 2014 › 11 › modulo-or-remainder-operator-in-java.html
How to use Modulo , Modulus, or Remainder Operator in Java? [Example] | Java67
In the case of an even number, number%2 will return 0 while if a number is odd then number%2 will return 1. Modulo operator is also known as Remainder operator and denoted by percentage sign (%).
Sarah Gebauer
sarahgebauer.com › post › exploring-java-remainder-operator
Exploring Java: Remainder operator | Sarah Gebauer
January 9, 2019 - Although I am not sure at the moment when to use remainder on float and double, it is possible to use modulo operation on numbers with floating point. Just be careful because in Java by default modulo operation is defined for integers and float the same way, (a/b)b+(a%b).
JavaBeat
javabeat.net › home › how to use modulo or remainder operator in java
How to Use Modulo or Remainder Operator in Java
March 20, 2024 - The modulo operator in Java performs division on given values and retrieves the remainder as output. It is denoted with a percent sign “%”.
W3Schools
w3schools.com › java › java_operators_arithmetic.asp
Java Arithmetic Operators
Java Examples Java Videos Java Compiler Java Exercises Java Quiz Java Code Challenges Java Server Java Syllabus Java Study Plan Java Interview Q&A Java Certificate ... Arithmetic operators are used to perform common mathematical operations.
Oracle
forums.oracle.com › ords › apexds › post › beginner-java-using-the-remainder-operator-0118
Beginner Java: Using the Remainder Operator
July 17, 2010 - Hi everyone, i just started Java, and I have an assignment to do which I have completed, except for one part that I'm hoping to get help with. the assignment is basically to keep track of this fiction...
CodeChef
codechef.com › learn › course › java › JAVANEW06 › problems › CRQDWE21
Modulus Operator (%) in Java in Java
Test your Learn Java knowledge with our Modulus Operator (%) in Java practice problem. Dive into the world of java challenges at CodeChef.
GeeksforGeeks
geeksforgeeks.org › java › program-to-find-quotient-and-remainder-in-java
Program to find Quotient And Remainder in Java - GeeksforGeeks
In Java, the quotient is the result of integer division, and the remainder is what is left after the division. ... Divide the dividend by the divisor using the / operator to get the quotient.
Published January 21, 2026
Vertex Academy
vertex-academy.com › tutorials › en › dividing-module-java
Mod Division in Java • Vertex Academy
November 23, 2017 - So, as you now understand, the modulus operator gives the remainder of the division. Mod division applies to the following types of variables: ... When you use the modulus operator with negative numbers, you have to follow some eccentric rules.