JAVA简单写学生信息管理系统,实现学生信息的输入、查询、修改、删除操作 package Week;import jdk.internal.util.xml.impl.Input;import java.util.HashSet;import java.util.Scanner;public class StudentMs { Scanner sc
JAVA简单写学生信息管理系统,实现学生信息的输入、查询、修改、删除操作
package Week; import jdk.internal.util.xml.impl.Input; import java.util.HashSet; import java.util.Scanner; public class StudentMs { Scanner sc = new Scanner(System.in); public int getID() { return ID; } public String getName() { return name; } public String getClassnum() { return classnum; } public int getTelephone() { return telephone; } public void setID(int ID) { this.ID = ID; } public void setName(String name) { this.name = name; } public void setClassnum(String classnum) { this.classnum = classnum; } public void setTelephone(int telephone) { this.telephone = telephone; } private int ID; private String name; private String classnum; private int telephone; /* public StudentMs(int ID, String name, String classnum, String telephone) { this.ID = ID; this.name = name; this.classnum = classnum; this.telephone = telephone; }*/ public void add(StudentMs a){ int ID1; String name2; String classnum1; int telephone1; System.out.println("请输入你要添加的学生信息"); System.out.println("请输出学生学号"); ID1 =sc.nextInt(); a.setID(ID1); System.out.println("请输出学生姓名"); sc.nextLine(); name2=sc.nextLine(); a.setName(name2); System.out.println("请输出学生班级"); classnum1=sc.nextLine(); a.setClassnum(classnum1); System.out.println("请输出学生电话号码"); telephone1=sc.nextInt(); a.setTelephone(telephone1); } public int find(String[][] a) { System.out.println("请输入你要查询学生的学号"); int n=-1; int id = sc.nextInt(); for(int i=0;i<a.length;i++) { if(Integer.parseInt(a[i][0]) == id) { n=i; break; } } return n; } public int delay(String[][] a) { System.out.println("请输入你要删除学生的学号!"); int id; int n=-1; id= sc.nextInt(); for(int i=0;i<a.length;i++) { if(Integer.parseInt(a[i][0])==id) { n=i; break; } } return n; } public int print(String[][] a) { System.out.println("请输入你要打印的学生信息的学生学号!"); int id; int n=-1; id = sc.nextInt(); for(int i=0;i<a.length;i++) { if(Integer.parseInt(a[i][0]) == id) { n=i; break; } } return n; } public int recivice(String[][] a) { System.out.println("请输入你要修改的学生信息的学生学号!"); int id; int n=-1; id = sc.nextInt(); for(int i=0;i<a.length;i++) { if(Integer.parseInt(a[i][0]) == id) { n=i; break; } } return n; } public int Num(){//用来查找修改图书信息的下标 System.out.println("选择你要修改的内容:0.学号 1.姓名 2.班级 3.电话"); int n=sc.nextInt(); return n; } public void display() { System.out.println("***************************************"); System.out.println("**** 高校学习信息管理系统 *****"); System.out.println("**** 1:添加学生信息 ****"); System.out.println("**** 2:查询学生信息 ****"); System.out.println("**** 3:修改学生信息 ****"); System.out.println("**** 4:删除学生信息 ****"); System.out.println("**** 5:打印学生信息 ****"); System.out.println("**** 6:退出 ****"); System.out.println("**** 请输入您要进行的操作(1-6) ***"); } public static void main(String[] args) { Scanner sc = new Scanner(System.in); StudentMs studentMs = new StudentMs(); boolean flat = true; HashSet a = new HashSet(); String[][] student=new String[4][10]; int num=0; int number; int m,n; while (flat) { studentMs.display(); number=sc.nextInt(); switch (number) { case 1: { studentMs.add(studentMs); student[num][0]=studentMs.ID+""; student[num][1]=studentMs.name+""; student[num][2]=studentMs.classnum+""; student[num][3]=studentMs.telephone+""; num++; break; } case 2: { m=studentMs.find(student); if(m>=0){ System.out.println("学生学号为:"+student[m][0]); System.out.println("学生姓名为:"+student[m][1]); System.out.println("学生班级为:"+student[m][2]); System.out.println("学生电话为:"+student[m][3]); }else{ System.out.println("学号错误,未找到学生"); break; } break; } case 3: { m=studentMs.recivice(student); n=studentMs.Num(); System.out.println("请输入你要修改的内容:"); student[m][n]=sc.next(); System.out.println("修改成功!"); break; } case 4: { m=studentMs.delay(student); for(int i=0;i<4;i++) { student[m][i]=null; } System.out.println("已经成功删除学生信息"); break; } case 5: { m=studentMs.delay(student); System.out.println("学号"+student[m][0]+"的学生信息为:"); System.out.println("学生学号为:"+student[m][0]); System.out.println("学生姓名为:"+student[m][1]); System.out.println("学生班级为:"+student[m][2]); System.out.println("学生电话为:"+student[m][3]); break; } case 6: { System.out.println("程序退出!"); flat=false; break; } } } } }
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