1 考題描述：

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2 答案

BD

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3解析

B. no modifer既為default也就是friendly

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3.1 public,private,protected,default訪問權限圖

3.2證明

?3.2.1 myeclipse類關系圖如下

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3.2.2 各個類的代碼

Student.java

package com.inner;public class Student {public String name = "zhangsan";String email = "1254290201@qq.com";protected int age = 13;private String address = "廣州";public static void main(String[] args) {Student student = new Student();System.out.println("name = " + student.name);System.out.println("email = " + student.email);System.out.println("age = " + student.age);System.out.println("address = " + student.address);}}

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MyTest1.java

package com.inner;public class MyTest1 {public static void main(String[] args) {Student student = new Student();System.out.println("name = " + student.name);System.out.println("email = " + student.email);System.out.println("age = " + student.age);System.out.println("address = " + student.address); //這行編譯通不過}}

MyTest2MyTest2MyTest2MyTest2.java

package com;import com.inner.Student;public class MyTest2 {public static void main(String[] args) {Student student = new Student();System.out.println("name = " + student.name);System.out.println("email = " + student.email); //這行編譯通不過System.out.println("age = " + student.age); //這行編譯通不過System.out.println("address = " + student.address); //這行編譯通不過}}

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