设有如下代码段：#1 String s = null;#2 if ( s != null & s.length() > 0)#3 System.out.println("s != null & s.length() > 0");#4 if ( s != null && s.length() > 0)#5 System.out.println("s != null & s.length() > 0");#6 if ( s != null || s.length() > 0)#7 System.out.println("s != null & s.length() > 0");#8 if ( s != null | s.length() > 0)#9 System.out.println("s != null | s.length() > 0");将抛出空指针异常的行是（ ）。