以前用c语言写过，这是第一次用java写 欢迎大家的指正，期间还在一个群里受到一个大佬的指点，大深夜的还特地远程，好人一生平安
public class Student
{
// String major;
// String sex;
// int grade;
int number;//学号
String name;
public Student()
{}
public Student(int number,String name)
{
this.number=number;
this.name=name;
}
Student add(Student s,int count)
{
Student s1=s;
System.out.println("请入学号：");
Scanner sc=new Scanner(System.in);
s.number=sc.nextInt();
System.out.println("请输入姓名：");
s.name=sc.next();
return s;
}
void show(int count,Student stu[])
{
if(count>0)
{
for(int i=0;i<count;i++)
System.out.println("学号为："+stu[i].number+"\t姓名为："+stu[i].name);
}
else
System.out.println("为空");
}
int search(int count,Student stu[])
{
System.out.println("请输入你要查找的学号：");
Scanner sc=new Scanner(System.in);
int x=sc.nextInt();
for(int i=0;i<count;i++)
if(x==stu[i].number)
return i;
return 999;
}
void modify(int count,Student stu[])
{
int i=search(count,stu);
if(i==999)
{
System.out.println("没有查找到这个学号");
return;
}
System.out.println("请输入修改后的学号：");
Scanner sc=new Scanner(System.in);
stu[i].number=sc.nextInt();
System.out.println("请输入修改后的姓名：");
stu[i].name=sc.next();
new Student().show(count,stu);
}
Integer delete(int count,Student stu[])
{
int i=search(count,stu);
if(i==999)
{
System.out.println("没有查找到这个学号");
return null;
}
for(int j=i;j<count;j++)
stu[j]=stu[j+1];
return count--;
}
}
class StudentManageStudent
{
public static void main(String[] args)
{
Scanner sc =new Scanner(System.in);
int x=1;//开关
int count = 3;//计数
Student stu[]=new Student[10];
stu[0]=new Student(1,"a");
stu[1]=new Student(2,"b");
stu[2]=new Student(3,"c");
while(x!=0)
{
System.out.println("1.增\t2.删\t3.查\t4.改\t5.浏览\t0.退出");
x =sc.nextInt();
switch(x)
{
case 1:
stu[count]=new Student().add(new Student(),count);
count++;
break;
case 2:
Student s=new Student();
if(s.delete(count, stu)!=null)
{
count--;
break;
}
break;
case 3:
int i=new Student().search(count,stu);
if(i==999)
System.out.println("没有查询到这个学号");
else
System.out.println("number="+stu[i].number+"\tname="+stu[i].name);
break;
case 4:
new Student().modify(count,stu);
break;
case 5:
new Student().show(count,stu);
break;
}
}
}
}
