Java, Check if integer is multiple of a number

Question

How do I check if a Java integer is a multiple of another number? For example, if int j is a multiple of 4.

Solution 1

Use the remainder operator (also known as the modulo operator) which returns the remainder of the division and check if it is zero:

if (j % 4 == 0) {
     // j is an exact multiple of 4
}

Solution 2

If I understand correctly, you can use the module operator for this. For example, in Java (and a lot of other languages), you could do:

//j is a multiple of four if
j % 4 == 0

The module operator performs division and gives you the remainder.

Solution 3

Use modulo

whenever a number x is a multiple of some number y, then always x % y equal to 0, which can be used as a check. So use

if (j % 4 == 0) 

Comments

[Akhil Dad]

check j!= 0 also as, if j==0 it will result in 0

[paxdiablo]

@AkhilDad, 0 is still a multiple of 4.

[Admin]

Its "modulo", not "module"