class Passer2 { 2. //insert code here 3. static int bigState = 42; 4. public static void main(String [] args) { 5. bigState = p2.go(bigState); 6. System.out.print(bigState); 7. } 8. int go(int x) { 9. return ++x; 10. } 11. } 和4段代码片段: static Passer2 p2 = new Passer2(); final static Passer2 p2 = new Passer2(); private static Passer2 p2 = new Passer2(); final private static Passer2 p2 = new Passer2(); 有多少行分别插入到第2行,可以编译?()