Package and access permission 2, access permission 2

Package and access permission 2, access permission 2

Write a Father class in Package a with attributes: Age (private), name (public );

Features: Work (public), drive (public ).

Compile a Child class Son in Package a with attributes: Age (protected) and name;

Features: Play (private), Learning (public ).

Finally, write the main class Test in Package B and Test the class Father and class Son in the main method of the main class.

Father:

 1 package pack1; 2  3 public class Father { 4     private int age; 5  6     public int getAge() { 7         return age; 8     } 9 10     public void setAge(int age) {11         this.age = age;12     }13 14     public String name;15 16     public void work() {17         System.out.println(name + ": I have a job.");18     }19 20     public void drive() {21         System.out.println(name + ": I have a car, I'm driving.");22     }23 }

Son:

 1 package pack1; 2  3 public class Son { 4  5     protected int age; 6  7     public void setAge(int age) { 8         this.age = age; 9     }10 11     public int getAge() {12         return age;13     }14 15     private String name;16 17     public void setName(String name) {18         this.name = name;19     }20 21     public String getName() {22         return name;  23     }24 25     private int play() {26         System.out.println(name + ": I like to play !");27         return age;28     }29     public int getPlay(){30         return age;31     }32 33     public void study() {34         System.out.println(name + ": I like to study !");35     }36 }

Text:

1 package pack2; 2 3 import pack1.Father; 4 import pack1.Son; 5 6 public class Text_F {7 8 public static void main (String [] args) {9 Father f1 = new Father (); 10 f1.setAge (55); 11 f1.name = "James"; 12 13 f1.drive (); 14 f1.work (); 15 int a = f1.getAge (); 16 System. out. println (f1.name + "Age:" + a + "years old. "); 17 18 Son s1 = new Son (); 19 s1.setAge (17); 20 s1.setName (" Zhang sansan "); 21 s1.study (); 22 int B = s1.getAge (); 23 System. out. println (s1.getName () + "Age:" + B + "years old. "); 24 25} 26 27}

Result: