isnumber java
// find value is number or not in java..
// if the value is number output is true
// if the value is not a number then output is false..
public class Test {
public static void main(String args[]) {
System.out.println(Character.isDigit('c')); // false
System.out.println(Character.isDigit('5')); // 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");Copyright © 2021 Codeinu
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