Without line 6 this code throws nullpointer exception.
but with it ,prints null.
How come? please explain
class nullDemo
{
static String s;
public static void main(String args[])
{
s = s + ""; //line 6
System.out.println(s);
String s1 = s.toLowerCase();
System.out.println(s1);
}
}
but with it ,prints null.
How come? please explain
class nullDemo
{
static String s;
public static void main(String args[])
{
s = s + ""; //line 6
System.out.println(s);
String s1 = s.toLowerCase();
System.out.println(s1);
}
}