实例讲解—类设计分析（学生类）

  class Student{

      private String stuno ;

      private String name ;51Testing软件测试网e!v/vW p:KZ&[:T8}

      private float math ;

      private float english ;51Testing软件测试网9@{Ga,?x

      private float computer ;

     //构造方法

      public Student(){} ;51Testing软件测试网 \7fn:uT!Fl4[4D

      public Student(String s,String n,float m,float e,float c){ 

          this.setStuno(s) ;

          this.setName(n) ;51Testing软件测试网4K$i7a R?$T!@

          this.setMath(m) ;51Testing软件测试网2I}2kX"f

          this.setEnglish(e) ;51Testing软件测试网OlQI.P` U,B1r*B

          this.setComputer(c) ;   51Testing软件测试网 TrS)DsT9D

      }

51Testing软件测试网&O%q!bAp

//封装

      public void setStuno(String s){51Testing软件测试网Y4zd{\e

          stuno = s ;

      }51Testing软件测试网Ip Nj[_ c^HURm

      public void setName(String n){51Testing软件测试网R#m6q1O`

          name = n ; 

      }51Testing软件测试网"sd$B Tq|7E` _u

      public void setMath(float m){51Testing软件测试网"z:uV&^*@

          math = m ;51Testing软件测试网$gpE/Wb-Pe(]t

      }

     51Testing软件测试网m-K3s,| l9v2`4a"RI

      public void setEnglish(float e){

          english = e ;51Testing软件测试网~"~6ClY7hr

      }

     51Testing软件测试网'Y0XtX,e5{8jP:R

      public void setComputer(float c){

          computer = c ;

      }51Testing软件测试网nS)E:Xs Z3o

      public String getStuno(){

          return stuno ;

      }51Testing软件测试网R4[ M'@RM
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      public String getName(){51Testing软件测试网N(^8z}'A3HJE;l'm

          return name ;51Testing软件测试网C2v,mHkEHj

      }

      public float getMath(){51Testing软件测试网.RB!y-M-M:ALi

          return math ;51Testing软件测试网 |V5T SkK0W9PC

      }51Testing软件测试网 W C5J7~@DOK

      public float getEnglish(){51Testing软件测试网w(?"[kQFO

          return english ; 51Testing软件测试网v{+U Ldc

      }51Testing软件测试网W1n1[8U:Z~1Fn"s

      public float getComputer(){51Testing软件测试网Vf.OT ?I

          return computer ;51Testing软件测试网@NVDD:\`&c `"?'W

      }51Testing软件测试网x/q/MH6Q#T9H8z

      public float sum(){51Testing软件测试网LU]~}LJw

          return math + english +computer ; //求和操作

      }

     51Testing软件测试网%]qrG!e?

      public float avg(){                   //求平均值

          return this.sum() / 3 ;

      }

      public float max(){                   //求最大值51Testing软件测试网 p
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          float max = math ;51Testing软件测试网D0@{'jxF)S_F

          max = max >computer?max:computer ;

          max = max >english?max:english ; 

          return max ;  51Testing软件测试网*ev,Oo0U"Y6v6q]

      }

       public float min(){                   //求最小值

          float min = math ;51Testing软件测试网/U5G| M/d$W's.w

          min = min <computer?min:computer ;51Testing软件测试网1L#?]7s9f([,~4d$S;W

          min = min <english?min:english ; 

          return min ;  51Testing软件测试网+Xg9a
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^(U

      }

  } ;

  public class ExampleDemo01{

      public static void main(String args[]){

          Student stu = null ;                       //声明对象51Testing软件测试网GHV-CZuc;vB8G

          stu = new Student("MLDN-33","李兴华",95.0f,89.0f,96.0f) ;

          System.out.println("学生编号：" + stu.getStuno()) ;51Testing软件测试网-|'^K0q
X^&x-{

          System.out.println("学生姓名：" + stu.getName()) ;

          System.out.println("数学成绩：" + stu.getMath()) ;51Testing软件测试网$r:Zl BIGs

          System.out.println("英语成绩：" + stu.getEnglish()) ;

          System.out.println("最高分：" + stu.max()) ;51Testing软件测试网2a$jS"Ue)Fv4u

          System.out.println("最低分：" + stu.min()) ;

      }

  }51Testing软件测试网5I0u$o W~A

学生编号：MLDN-3351Testing软件测试网l,j?.kF

学生姓名：李兴华

数学成绩：95.051Testing软件测试网8K Z{TzLW

英语成绩：89.051Testing软件测试网fs7D"c-^3j{ rq

最高分：96.051Testing软件测试网$}(q"Ch"^)fm

最低分：89.0