Checking for a not null, not blank String in Java

Question

I am trying to check if a Java String is not null, not empty and not whitespace.

In my mind, this code should have been quite up for the job.

Answer 1

Why can't you simply use a nested ternary operator to achieve this.Please look into the sample code public static void main(String[] args) { String s = null; String s1=""; String s2="hello"; System.out.println(" 1 "+check(s)); System.out.println(" 2 "+check(s1)); System.out.println(" 3 "+check(s2)); } public static boolean check(String data) { return (data==null?false:(data.isEmpty()?false:true)); }

and the output is as follows

1 false 2 false 3 true

here the 1st 2 scenarios returns false (i.e null and empty)and the 3rd scenario returns true