java test if a string is a int
public static boolean isInt(String str) {
try {
@SuppressWarnings("unused")
int x = Integer.parseInt(str);
return true; //String is an Integer
} catch (NumberFormatException e) {
return false; //String is not an Integer
}
}c string is int
int isNumber(char s[])
{
for (int i = 0; s[i]!= '\0'; i++)
{
if (isdigit(s[i]) == 0)
return 0;
}
return 1;
}java how to check string is number
public static boolean isNumeric(String strNum) {
if (strNum == null) {
return false;
}
try {
double d = Double.parseDouble(strNum);
} catch (NumberFormatException nfe) {
return false;
}
return true;
}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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