class Vector {} class BasicTypes3 { Boolean B; Integer I; Double D; String S; Vector V; public static void main(String[] args) { BasicTypes3 bt3 = new BasicTypes3(); System.out.println(bt3.B == null ? 1 : 0); System.out.println(bt3.I == null ? 1 : 0); System.out.println(bt3.D == null ? 1 : 0); System.out.println(bt3.S == null ? 1 : 0); System.out.println(bt3.V == null ? 1 : 0); } }