@Test public void shouldMarkNullAsNonPositive() { boolean positive = ObjectUtil.isPositive(null); assertThat(positive).isFalse(); }
public static boolean isPositive(Long number) { return number != null && number > 0; }
ObjectUtil { public static boolean isPositive(Long number) { return number != null && number > 0; } }
ObjectUtil { public static boolean isPositive(Long number) { return number != null && number > 0; }  }
ObjectUtil { public static boolean isPositive(Long number) { return number != null && number > 0; }  static boolean isEmpty(Object o); static boolean isNotEmpty(Object o); static boolean isZero(Long number); static boolean isPositive(Long number); }
ObjectUtil { public static boolean isPositive(Long number) { return number != null && number > 0; }  static boolean isEmpty(Object o); static boolean isNotEmpty(Object o); static boolean isZero(Long number); static boolean isPositive(Long number);  }