1、编写一个学生类，提供name,age,gender,phone,address,email成员变量，且为每个成员变量提供setter、getter方法。为学生提供默认构造器和带有所有成员变量的构造器。为学生提供方法，由于描绘吃、喝、玩、睡等行为。
1 class Student
2 {
3 String name;
4 int age;
5 String gender;
6 String phone;
7 String address;
8 String email;
9
10 public Student()
11 {
12
13 }
14 public Student(String name,int age,String gender,String phone,String address,String email)
15 {
16 =name;
17 this.age=age;
18 this.gender=gender;
19 this.phone=phone;
20 this.address=address;
21 this.email=email;
22 }
23
24 protected void setter(String name,int age,String gender,String phone,String address,String email)
25 {
26 =name;
27 this.age=age;
28 this.gender=gender;
29 this.phone=phone;
30 this.address=address;
31 this.email=email;
32 }
33
34 protected void getter()
35 {
36 System.out.println("学生："+);
37 System.out.println("性别："+this.gender);
38 System.out.println("电话号："+phone);
39 System.out.println("地址："+this.address);
40 System.out.println("email:"+email);
41 }
42
43 protected void eat()
44 {
45 System.out.println(+"正在吃东西");
46 }
47 protected void play()
48 {
49 System.out.println(+"正在玩");
50 }
51
52 }
53
54 public class StudentTest
55 {
56 public static void main(String[] args)
57 {
58 var st1=new Student();
59 st1.getter();
60 Student st2=new Student("李",20,"男","13438310326","北京","1234567891@");
61 st2.getter();
62 st2.eat();
63 st2.play();
64
65
66 }
67 }2、利用第一题的学生类，定义一个Student[]数组保存多个Student对象作为通讯录数据。程序可通过name、email、address查询，如果找不到数据则进行友好提示。
1 class StudentResearch
2 {
3 public Student nameSearch(Student[] st,String name)
4 {
5 Student result=new Student();
6 for(int i=0;i<st.length;i++)
7 {
8 if(st[i].name==name)
9 {
10 result=st[i];
11 }
12 }
13 return result;
14 }
15 public Student emialSearch(Student[] st,String email)
16 {
17 Student result=new Student();
18 for(int i=0;i<st.length;i++)
19 {
20 if(st[i].email==email)
21 {
22 result=st[i];
23 }
24 }
25 return result;
26 }
27 public Student addressSearch(Student[] st,String address)
28 {
29 Student result=new Student();
30 for(int i=0;i<st.length;i++)
31 {
32 if(st[i].address==address)
33 {
34 result=st[i];
35 }
36 }
37 return result;
38 }
39
40 public static void main(String[] args)
41 {
42 Student[] st=new Student[5];
43 st[0]=new Student("李",20,"男","13438310321","北京","1234567891@");
44 st[1]=new Student("李明",20,"男","13438310322","上海","1234567892@");
45 st[2]=new Student("李二",20,"男","13438310323","广东","1234567893@");
46 st[3]=new Student("李三",20,"男","13438310324","重庆","1234567894@");
47 st[4]=new Student("李四",20,"男","13438310325","成都","1234567895@");
48
49 //姓名查找
50 var p=new StudentResearch();
51 Student namefind=p.nameSearch(st,"李二");
52 if(namefind.name==null)
53 {
54 System.out.println("未查找到该用户");
55 }
56 else
57 namefind.getter();
58
59 //邮箱查找
60 Student emailfind=p.emialSearch(st,"1234567894@");
61 if(emailfind.email==null)
62 {
63 System.out.println("未查找到该用户");
64 }
65 else
66 emailfind.getter();
67
68 //地址查找
69 Student addressfind=p.addressSearch(st,"北京");
70 if(addressfind.address==null)
71 {
72 System.out.println("未查找到该用户");
73 }
74 else
75 addressfind.getter();
76 }
77 }3、定义普通人、老师、班主任、学生、学校这些类，提供适当的成员变量、方法描述其内部数据和行为特征，并提供主类使之运行。要求良好的封装性，将不同的类放到不同包下，增加文档注释，生成API文档。
Person类：
1 package org.one;
2 /*
3 *Description 这是一个普通的类，用于派生其他类
4 *@author star
5 *@version 1.0
6 */
7 public class Person
8 {
9 //成员变量，保存姓名
10 protected String name;
11 //Person类的成员变量，保存年纪
12 protected int age;
13
14 /*
15 *描述人吃的方法
16 *@param name 指明谁在吃
17 *@param food 指明吃的食物
18 *@return void
19 */
20
21 /*
22 *Person类的构造器
23 *@param name 初始化姓名
24 *@param age 初始化年龄
25 */
26 public Person(String name,int age)
27 {
28 =name;
29 this.age=age;
30 }
31 public void eat(String name,String food)
32 {
33 System.out.println(name+"正在吃"+food);
34 }
35
36 /*
37 *描述人喝的方法
38 *@return void
39 */
40 public void drink()
41 {
42 System.out.println(name+"正在喝水");
43 }
44
45 /*
46 *描述人玩的方法
47 *@return void
48 */
49 public void eat()
50 {
51 System.out.println(name+"正在玩泥巴");
52 }
53
54 /*
55 *描述人方便的方法
56 *@return void
57 */
58 public void goToLoo()
59 {
60 System.out.println(name+"正在方便");
61 }
62
63 /*
64 *描述人信息的方法
65 *@return void
66 */
67 public void getter()
68 {
69 System.out.println("姓名："+name+",年龄："+age);
70 }
71 }Student类：
1 package org.two;
2 import org.one.Person;
3 /*
4 *Description 学生类
5 *@author star
6 *@version 1.0
7 */
8 public class Student extends Person
9 {
10 //成员变量——年级
11 public int grade;
12 /*
13 *学生类的构造器
14 */
15 public Student(String name,int age,int grade)
16 {
17 super(name,age);
18 this.grade=grade;
19 }
20
21 /*
22 *描述学生学习的方法
23 *@param name 描述谁在学习
24 *@return void
25 */
26 public void study()
27 {
28 System.out.println(name+"正在学习");
29 }
30 public void getter()
31 {
32 System.out.println("身份：学生");
33 System.out.println("姓名："+name+",年龄："+age+",年级："+grade);
34 }
35
36 }Teacher类：
1 package org.three;
2 import org.one.Person;
3
4 public class Teacher extends Person
5 {
6 public Teacher(String name,int age)
7 {
8 super(name,age);
9 }
10
11 /*
12 *描述学生学习的方法
13 *@param name 描述谁在教学
14 *@return void
15 */
16 public void teache()
17 {
18 System.out.println(name+"老师正在上课");
19 }
20 public void getter()
21 {
22 System.out.println("身份：老师");
23 System.out.println("姓名："+name+",年龄："+age);
24 }
25
26 }School类：
1 package org.four;
2 import org.two.*;
3 import org.three.*;
4 public class School
5 {
6
7 protected Teacher[] Te;
8 protected Student[] St;
9
10 //登记学生信息
11 public School(Teacher[] Te,Student[] St)
12 {
13 this.Te=Te;
14 this.St=St;
15 }
16 public void getter()
17 {
18 for(int i=0;i<Te.length;i++)
19 {
20 Te[i].getter();
21 }
22 for(int i=0;i<St.length;i++)
23 {
24 St[i].getter();
25 }
26 }
27 }主类入口：
1 import org.one.Person;
2 import org.two.Student;
3 import org.three.Teacher;
4 import org.four.School;
5 class Test
6 {
7 public static void main(String[] args)
8 {
9 Student s1=new Student("李一",12,6);
10 Student s2=new Student("李二",13,7);
11 Student s3=new Student("李三",14,8);
12 Student[] ss={s1,s2,s3};
13
14 Teacher t1=new Teacher("张三",30);
15 Teacher t2=new Teacher("张四",35);
16 Teacher t3=new Teacher("张五",36);
17 Teacher[] ts={t1,t2,t3};
18
19 School sch=new School(ts,ss);
20 sch.getter();
21
22 s1.study();
23 t1.teache();
24
25 s2.drink();
26 }
27 }4、改写第一题的类，利用组合来实现复用
1 class Student
2 {
3 String name;
4 int age;
5 String gender;
6 String phone;
7 String address;
8 String email;
9
10 public Student()
11 {
12
13 }
14 public Student(String name,int age,String gender,String phone,String address,String email)
15 {
16 =name;
17 this.age=age;
18 this.gender=gender;
19 this.phone=phone;
20 this.address=address;
21 this.email=email;
22 }
23
24 protected void setter(String name,int age,String gender,String phone,String address,String email)
25 {
26 =name;
27 this.age=age;
28 this.gender=gender;
29 this.phone=phone;
30 this.address=address;
31 this.email=email;
32 }
33
34 protected void getter()
35 {
36 System.out.println("学生："+);
37 System.out.println("性别："+this.gender);
38 System.out.println("电话号："+phone);
39 System.out.println("地址："+this.address);
40 System.out.println("email:"+email);
41 }
42
43 protected void eat()
44 {
45 System.out.println(+"正在吃东西");
46 }
47 protected void play()
48 {
49 System.out.println(+"正在玩");
50 }
51
52 }
53
54 class Find
55 {
56 private Student[] students;
57 public Find(Student[] students)
58 {
59 this.students=students;
60 }
61
62 public Student NameFind(String name)
63 {
64 Student result=null;
65 for(Student stu:students)
66 {
67 if(==name)
68 {
69 result=stu;
70 }
71 }
72 return result;
73 }
74
75 public Student EmailFind(String email)
76 {
77 Student result=null;
78 for(Student stu:students)
79 {
80 if(stu.email==email)
81 {
82 result=stu;
83 }
84 }
85 return result;
86 }
87
88 public Student PhoneFind(String phone)
89 {
90 Student result=null;
91 for(Student stu:students)
92 {
93 if(stu.phone==phone)
94 {
95 result=stu;
96 }
97 }
98 return result;
99 }
100 }
101 public class StudentTest
102 {
103 public static void main(String[] args)
104 {
105
106 Student st1=new Student("李一",20,"男","13438310321","北京","1234567891@");
107 Student st2=new Student("李二",20,"男","13438310322","北京","1234567892@");
108 Student st3=new Student("李三",20,"男","13438310323","北京","1234567893@");
109 Student st4=new Student("李四",20,"男","13438310324","北京","1234567894@");
110 Student st5=new Student("李五",20,"男","13438310325","北京","1234567895@");
111 Student[] stus={st1,st2,st3,st4,st5};
112
113 Find F=new Find(stus);
114 var bool1=(F.NameFind("李二").name==null);
115 if(bool1)
116 System.out.println("查无此人");
117 else
118 F.NameFind("李二").getter();
119
120 var bool2=(F.PhoneFind("13438310329")==null);
121 if(bool2)
122 System.out.println("查无此人");
123 else
124 F.PhoneFind("13438310329").getter();
125 }
126 }
本文章为转载内容，我们尊重原作者对文章享有的著作权。如有内容错误或侵权问题，欢迎原作者联系我们进行内容更正或删除文章。
