how to check if number is integer in java
if(x == (int)x){
println("x is an integer");
}how to check if number is integer in java
if(x == (int)x){
println("x is an integer");
}java check if int is null
An int is not null, it may be 0 if not initialized.
If you want an integer to be able to be null, you need to use Integer instead of int.
Integer id;
String name;
public Integer getId() { return id; }
Besides the statement if(person.equals(null)) can't be true, because if person is null, then a NullPointerException will be thrown. So the correct expression is if (person == null)java check if int
//"% (modulo)" calulates the remainder when the value on the left is divided by the value on the right
float number = 20;
if(number%1 == 0){
println("It is an integer");
} else {
println("It is not an integer");
}Copyright © 2021 Codeinu
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