• 【每日日报】第九天


    1 今天写了Teacher类的程序

     题目要求:

     

     

     

      程序源代码:

    package Person;
    import java.util.Scanner;
    public class Ma extends Student{
      public static void main(String[] args)
      {
          char[] s1={'1','3','0','5','0','2','1','9','0','0','0','1','0','1','0','3','3','2'};
          char[] s2={'d','o','u','b','l','e','b','e','s','t'};
          char[] s3={'2','0','1','8','1','2','3','4'};
          char[] s4={'铁','1','8','0','1'};
          double value=60.67;
          Student stu1=new Student(s1,s2,s3,s4,value);
          stu1.show();
          Student stu2=new Student(stu1);
          Scanner input = new Scanner(System.in);
          String s;
          s = input.nextLine();
          s3 = s.toCharArray();
          s = input.nextLine();
          s4 = s.toCharArray();
          value = input.nextDouble();
          stu2.setSNo(s3);
          stu2.setClassName(s4);
          stu2.show();
          Teacher t1 = new Teacher(s1,s2,s3,s4,value);
          t1.show();
          Teacher t2 = new Teacher(t1);
          t2.setTNo(s3);
          t2.setDepartmentName(s3);
          t2.show();
          input.close();
      }
     }
     
    package Person;
    public class Person {
         char[] no;                   //身份证号
         char[] name;                //姓名
         Person(){no=null;name=null; System.out.println("Person Constructor run");}
         Person(char[] str1,char[] str2)//有参构造
         {
          this.no=str1;
          this.name=str2;
             System.out.println("Person Constructor run");
         }
         Person(Person p)        //拷贝构造
         {
             no=p.no;
             name=p.name;
             System.out.println("Person CopyConstructor run");
         }
         void show()             //显示Person信息
         {
          System.out.print("No=");
             System.out.print(no);
             System.out.print(",Name=");
             System.out.println(name);
         }
         void setNo(char[] str) { no=str;}        //设置身份证号
         void setName(char[] str){name=str;}        //设置姓名
         char[] getNo() {return no;}               //获取身份证号
         char[] getName() {return name;}             //获取姓名
    }
     
    package Person;
    public class Student extends Person{
     char[] sNo;
        char[] className;
        double score;
        Student(){System.out.println("Student Constructor run");}
        Student(char[] ss1, char[] ss2, char[] ss3,char[] ss4,double vv)                //有参构造函数
        {
         super(ss1,ss2);
            this.sNo=ss3;
            this.className=ss4;
            this.score=vv;
            System.out.println("Student Constructor run");
        }
        Student(Student stu)           //拷贝构造函数
        {  
         super(stu);
         this.sNo=stu.sNo;
         this.className=stu.className;
         this.score=stu.score;
            System.out.println("Student CopyConstructor run");
        }
        void setSNo(char[] SNO){this.sNo=SNO;}
        char[] getSNo(){return this.sNo;}
        void setClassName(char[] CLASSNAME){this.className=CLASSNAME;}
        char[]  getClassName(){return className;}
        void  setScore(double SCORE){this.score=SCORE;}
        double  getScore(){return this.score;}
        void show()
        {
            System.out.print("No=");
            System.out.print(no);
            System.out.print(",Name=");
            System.out.println(name);
            System.out.print("sNo=");
            System.out.print(sNo);
            System.out.print(",ClassName=");
            System.out.print(className);
            System.out.print(",Score=");
            System.out.println(Math.round(score));
        }
    }
     
    package Person;public class Teacher extends Person{   char[] tNo;   char[] departmentName;
       double wages;
       Teacher(){}
       Teacher(char[] ss1, char[] ss2, char[] ss3,char[] ss4, double X)                //有参构造函数Teacher
         {
          super(ss1,ss2);
             tNo=ss3;
             departmentName=ss4;
             wages=X;
             System.out.println("Teacher Constructor run");
         }
         Teacher(Teacher  tea)          //拷贝构造函数Teacher
         {
          super(tea);
             tNo=tea.tNo;
             departmentName=tea.departmentName ;
             wages=tea.wages;
             System.out.println("Teacher CopyConstructor run");
         }
         void  setTNo(char[] TNO){tNo=TNO;}
         char[] getTNo(){return tNo;}
         void  setDepartmentName(char[] dep) {departmentName=dep; }
         char[]  getDepartmentName(){return departmentName;}
         void  setWages(double wag){wages=wag;}
         double  getWages(){return wages;}
         void show()
         {
          System.out.print("No=");
          System.out.print(no);
          System.out.print(",Name=");
          System.out.println(name);
          System.out.print("TNo=");
          System.out.print(tNo);
          System.out.print(",DepartmentName=");
          System.out.print(departmentName);
          System.out.print(",Wages=");
          System.out.println(Math.round(wages));
         }
    }

     运行截图:

    2 今天了解到java不支持多继承,但可以通过其他方式来实现 class A extends B;class C extends A

    3 明天继续写习题

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  • 原文地址:https://www.cnblogs.com/linmob/p/13297598.html
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