Question

Is null mean empty String in Java

Answer 1

package javaapplication1;

public class JavaApplication1 {

    public static void main(String[] args) {

        try {

            String s = null; // null is not empty String in Java
            if (s.isEmpty()) {
                System.out.println("String is empty");
            }

        } catch (Exception e) {
            System.out.print(e);
        }
    }
}

/*
            
run:
      
java.lang.NullPointerException
   
 */

 

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Answer 2

package javaapplication1;

public class JavaApplication1 {

    public static void main(String[] args) {

        try {

            String s = null; // null is not empty String in Java
            if (s == null) {
                System.out.println("String is null");
            }

        } catch (Exception e) {
            System.out.print(e);
        }
    }
}

/*
            
run:
      
String is null
   
 */

 

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