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;
}check if string is decimal java
Scanner in = new Scanner(System.in);
String ip1 = in.nextLine();
if( ip1.matches("^\\d+\\.\\d+") )
System.out.println(ip1+"----is a decimal number");
else
System.out.println(ip1+"----is a not decimal number");how to check if number is integer in java
if(x == (int)x){
println("x is an integer");
}check if the given string is a number
//Add this to your code and call
static private boolean isMyNumber(String s){
try{
Integer.parseInt(s);
return true;
}catch (Exception e){
return false;
}
}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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