java阶段项目：学生成绩管理系统(面向对象)

精选文库Java 学生信息管理系统（面向对象）一：效果如下：二：具体实现代码如下：Student类Student .javapublic class Student private int id;private String name;private int age;private int java;private int csharp;private int html;private int sql;private int sum;private int avg;public int getId() return id;public void setId(int id) this.id = id;public String getName() return name;public void setName(String name) = name;public int getAge() return age;public void setAge(int age) this.age = age;public int getJava() return java;public void setJava(int java) this.java = java;public int getCsharp() return csharp;public void setCsharp(int csharp) this.csharp = csharp;public int getHtml() return html;public void setHtml(int html) this.html = html;public int getSql() return sql;public void setSql(int sql) this.sql = sql;public int getSum() return sum;public void setSum() this.sum = this.java+this.csharp+this.html+this.sql;public int getAvg() return avg;public void setAvg() this.avg = this.sum/4;public String toString()String msg=t+this.id+t++t+this.age+t+this.java+t+this.csharp+t+this.html+t+this.sql+t+this.sum+t+this.avg;return msg;学生信息管理类StudentAdmin.javaimport java.util.Scanner;public class StudentAdmin String msg=t编号t姓名t年龄tjavatcsharpthtmltsqlt总分t平均分;/打印现有学生public void print(Student stu)System.out.println(msg);for(int i=0;istu.length;i+)if(stui!=null)System.out.println(stui);/添加学生public void addStudent(String name,int age,Student stu)Student student=new Student();student.setName(name);student.setAge(age);int i=this.getIndex(stu);if(i=9999)System.out.println(数组已经容纳最大量，不能再接受);elsestudent.setId(i);stui=student;/获取编号public int getIndex(Student stu)for(int i=0;istu.length;i+)if(stui=null)return i;return 9999;/根据学生编号查找学生public void selectStudent(int id,Student stu)System.out.println(msg);for(int i=0;istu.length;i+)if(stui!=null)if(this.exits(id, stui)if(stui.getId()=id)System.out.println(stui);return;System.out.println(t没有这个学生存在！);/查询学生是否存在public boolean exits(int id,Student stu)if(stu!=null)if(stu.getId()=id)return true;elsereturn false;return false;/更新学生信息public void updateStudent(int id,String name,int age,Student stu)for(int i=0;istu.length;i+)if(stui!=null)if(this.exits(id, stui)if(stui.getId()=id)stui.setName(name);stui.setAge(age);System.out.println(-更新学生信息成功-);return;System.out.println(该学生不存在！);public void deleteStudent(int id,Student stu)for(int i=0;istu.length;i+)if(this.exits(id, stui)stui=null;this.print(stu);System.out.println(t-删除学生成功-);return;System.out.println(删除学生失败);/根据学生编号获取学生姓名public String getName(int id,Student stu)for(int i=0;istu.length;i+)if(this.exits(id, stui)return stui.getName();return null;/根据学生编号输入学生成绩public void inputScore(int id,Student stu,Scanner input)String name=this.getName(id, stu);System.out.println(请输入+name+的java成绩：);int java=input.nextInt();System.out.println(请输入+name+的csharp的成绩：);int csharp=input.nextInt();System.out.println(请输入+name+的html的成绩：);int html=input.nextInt();System.out.println(请输入+name+的sql的成绩：);int sql=input.nextInt();for(int i=0;istu.length;i+)if(this.exits(id, stui)stui.setJava(java);stui.setCsharp(csharp);stui.setHtml(html);stui.setSql(sql);stui.setSum();stui.setAvg();break;this.print(stu);/指定某门课的成绩排序public void scoreSort(int num,Student stu)Student arr=stu;if(num=1)for(int i=0;istu.length-1;i+)for(int j=i+1;jstu.length;j+)if(stui!=null&stuj!=null)if(stui.getJava()stuj.getJava()Student s=arri;arri=arrj;arrj=s;this.print(arr);else if(num=2)for(int i=0;istu.length-1;i+)for(int j=i+1;jstu.length;j+)if(stui!=null&stuj!=null)if(stui.getCsharp()stuj.getCsharp()Student s=arri;arri=arrj;arrj=s;this.print(arr);else if(num=3)for(int i=0;istu.length-1;i+)for(int j=i+1;jstu.length;j+)if(stui!=null&stuj!=null)if(stui.getHtml()stuj.getHtml()Student s=arri;arri=arrj;arrj=s;this.print(arr);else if(num=4)for(int i=0;istu.length-1;i+)for(int j=i+1;jstu.length;j+)if(stui!=null&stuj!=null)if(stui.getSql()stuj.getSql()Student s=arri;arri=arrj;arrj=s;this.print(arr);/总分排序public void sumSort(Student stu)Student arr=stu;for(int i=0;iarr.length-1;i+)for(int j=i+1;jarr.length;j+)if(arri!=null&arrj!=null)if(arri.getSum()arrj.getSum()Student s=arrj;arrj=arri;arri=s;this.print(arr);测试类Test.Javaimport java.util.Scanner;public class Test /* * param args */public static void main(String args) / TODO Auto-generated method stubScanner input=new Scanner(System.in);StudentAdmin admin=new StudentAdmin();System.out.println(请输入学生的人数：);int studentNumber=input.nextInt();Student students=new StudentstudentNumber;while(true)System.out.println(请选择要执行的功能（输入编号）：);System.out.println(10：添加一个学生);System.out.println(11:查找一个学生);System.out.println(12：根据学生编号更新学生基本信息);System.out.println(13:根据学生编号删除学生);System.out.println(14：根据编号输入学生各门科的成绩);System.out.println(15:根据某门成绩进行排序);System.out.println(16：根据总分进行排序);System.out.println(99：退出系统);int number=input.nextInt();if(number=10)System.out.println(-执行添加学生操作-);System.out.println(请输入要添加学生的姓名：);String name=input.next();System.out.println(请输入要添加学生的年龄：);int age=input.nextInt();admin.addStudent(name, age, students);admin.print(students);else if(number=11)System.out.println(-执行查找学生操作-);System.out.println(请输入要查找学生的编号:);admin.selectStudent(input.nextInt(), students);else if(number=12)System.out.println(执行更新学生信息操作);System.out.println(请输入要修改信息学生的编号);int id=input.nextInt();System.out.println(请输入修改后学生的姓名：);String name=input.next();System.out.println(请输入修改后学生的年龄：);int age=input.nextInt();admin.updateStudent(id, name, age, students);admin.print(students);else if(number=13)Sy