Check the Empty String in Java

import org.apache.commons.lang.StringUtils;

public class CheckEmptyStringExample
{
    public static void main(String[] args)
    {
    String string1 = "";
    String string2 = "\t\r\n";
    String string3 = "     ";
    String string4 = null;
    String string5 = "Hi";
    System.out.println("\nString one is empty? " +
StringUtils.isBlank(string1));
    System.out.println("String one is not empty? " +
 StringUtils.isNotBlank(string1));
    System.out.println("\nString two is empty? " +
StringUtils.isBlank(string2));
    System.out.println("String two is not empty?" +
StringUtils.isNotBlank(string2));
    System.out.println("\nString three is empty?" +
StringUtils.isBlank(string3));
    System.out.println("String three is not empty?" +
StringUtils.isNotBlank(string3));
    System.out.println("\nString four is empty?" +
StringUtils.isBlank(string4));
    System.out.println("String four is not empty?" +
StringUtils.isNotBlank(string4));
    System.out.println("\nString five is empty?" +
StringUtils.isBlank(string5));
    System.out.println("String five is not empty?" +
StringUtils.isNotBlank(string5));
    }
}