public class emptystring | |
{ | |
public static void main(String[] args) | |
{ | |
System.out.println("null".equals(n(0) + "")); | |
System.out.println("null".equals("" + n(0))); | |
System.out.println("x".equals(n(1) + "")); | |
System.out.println("x".equals("" + n(1))); | |
} | |
static String n(int i) | |
{ | |
if (i==0) return null; else return "x"; | |
} | |
} |