/** * @author lautturi.com * Java example: check if input is empty or not in java */ import java.util.*; import java.io.*; public class Lautturi { public static void main(String[] args) { InputStreamReader r=new InputStreamReader(System.in); BufferedReader br=new BufferedReader(r); System.out.println("Enter a name"); String name = null; try { name = br.readLine(); if (name.isEmpty()){ System.out.println("the input is empty!"); } else { System.out.println("Name:"+name); } } catch (IOException e) { e.printStackTrace(); } } }Sourww:ecw.lautturi.com
example of output 1:
Enter a name the input is empty!
example of output 2:
Enter a name lau Name:lau