java國小期實驗報告_大一java國小期作業學生管理資訊系統

package summerPractice;

import java.util.NoSuchElementException;

import java.io.File;

import java.io.FileNotFoundException;

import java.io.FileWriter;

import java.io.IOException;

import java.io.PrintWriter;

import java.util.Arrays;

import java.util.Iterator;

import java.util.Scanner;

public class Home {

public static void main(String[] args) throws IOException {

// TODO Auto-generated method stub

Scanner input=new Scanner(System.in);

//實驗文檔資料轉換

//确定學生人數

//out1和out2為操作是的試驗文本

System.out.println("先将資訊按：學号+名字+性别+高數+馬列+C語言+計技基礎的格式輸入到data/output.txt文檔中；輸入out 退出，輸入任意字元進入系統。");String enter=input.next();

//判斷是否進入系統

while(!enter.equals("out")){

CopyRight.CopyRight(1);//版權書寫

int studentNum=0;Scanner outS=new Scanner(new File("data/output.txt"));

PrintWriter out1=new PrintWriter(new File("data/out1.txt"));PrintWriter out2=new PrintWriter(new File("data/out2.txt"));

while(outS.hasNext()){

for(int i=0;i<3;i++){if(i!=2)out1.print(outS.next()+"  "); else out1.println(outS.next());}

for(int i=0;i<5;i++){if(i!=4)out2.print(outS.nextInt()+"  "); else out2.println(outS.nextInt());}

studentNum++;

}outS.close();out1.close();out2.close();

//System.out.println(studentNum);//檢驗學生人數

//将原始資料資訊和分數分别複制到student.txt和scores.txt文檔中

PrintWriter studentData=new PrintWriter(new File("data/student.txt"));

PrintWriter scoresData=new PrintWriter(new File("data/student1.txt"));

Scanner dataSource=new Scanner (new File("data/output.txt"));

while(dataSource.hasNext()){

for(int n=0;n<3;n++){if(n!=2)studentData.print(dataSource.next()+"    ");else studentData.println(dataSource.next());}

for(int n=0;n<5;n++){if(n!=4)scoresData.print(dataSource.nextInt()+"    ");else scoresData.println(dataSource.next());}

}studentData.close();scoresData.close();scoresData.close();

String[][] student=new String[studentNum][3];String[][] student1=new String[studentNum][3];

int[][] scores=new int[studentNum][5];

Scanner source=new Scanner(new File("data/student.txt"));

Scanner source1=new Scanner(new File("data/student1.txt"));

//基本資訊二維數組student;

for(int i=0;i

int n=0;while(source.hasNext()&&n<=2){

student [i][n]=source.next();String s=student[i][n];student1[i][n]=s;//student1為原始基本資訊數組

n++;

}

}source.close();

//成績二維數組scores；一行為個人高數。英語。馬列，C語言，計技基礎的成績

for(int i=0;i

int n=0;while(source1.hasNext()&&n<=4){

scores [i][n]=source1.nextInt();n++;

}

}source1.close();

//個人各科分數求和,輸入列,存入Sum數組中

double[] Sum=new double[studentNum];

for(int i=0;i

double sum=0;for(int n=0;n<5;n++){

sum=sum+scores [i][n];

}Sum[i]=sum;

}

//實作總分排名輸出和排名檢索： 将數組按總分排名寫出

for(int i=0;i

String[] turn1=new String[3];int[] turn2=new int[5];

double max=Sum[i];for(int n=i+1;n

if(Sum[n]>max){

max=Sum[n];Sum[n]=Sum[i];Sum[i]=max;//總分替換

turn1=student[i];student[i]=student[n];student[n]=turn1;//替換基本資訊

turn2=scores[i];scores[i]=scores[n];scores[n]=turn2;//替換各科分數數組

}

}

}//for(int i=0;i<10;i++){System.out.println(Sum[i]+student[i][1]);}總分列印檢驗，數組已經是按總分排名

System.out.println("共："+studentNum+"名學生"+"輸入操作類型case：(0：基本資訊；1：修改資訊；2：總分排名列印；3：單科資料；4：總分排名查詢；5：基本資訊查詢；6：列印成績報表)");

int type=input.nextInt();

switch(type){

//顯示學生基本資訊

case 0:

for(int i=0;i

System.out.println(Arrays.toString(student1[i]));

}break;

case 1:

//修改資訊

System.out.println("資訊修改,輸入1增加個人資料，輸入2删除個人資料，輸入3更改已有人員資訊：");

int update=input.nextInt();PrintWriter output = new PrintWriter(new FileWriter("data/output.txt", true));

PrintWriter outputData = new PrintWriter(new FileWriter("data/testData.txt", true));

//增加檔案

if(update==1){

System.out.println("請輸入增加人：");

int i=input.nextInt();System.out.println("輸入學号+姓名+性别+高數+英語+馬列+c語言+計技基礎：");

for(int t=0;t

for(int n=0;n<3;n++){String s=input.next();output.print(s+"  ");}

for(int n=0;n<5;n++){int num=input.nextInt();if(n!=4)output.print(num+ "  ");else output.println(num);}

}

output.close();outputData.close();System.out.println("操作成功，資料儲存在data/output.txt文檔中");

}

//删除檔案

else if(update==2){

System.out.println("輸入個人資訊：學号或姓名：");java.io.File file=new java.io.File("data/output.txt");

String s=input.next();int count=-1;

for(int i=0;i

if(s.equals(student[i][0])||s.equals(student[i][1])){

count=i;

}

}

if(count>=0){System.out.println("即将删除的資訊為："+Arrays.toString(student[count])+" "+Arrays.toString(scores[count])+"輸入yes删除，輸入其他則取消：");

String yes=input.next();

if(yes.equals("yes")){DelectAims.delectAims(file, s);

Scanner delSource=new Scanner (new File("data/delMid.txt"));PrintWriter delRusult=new PrintWriter(new File("data/output.txt"));

while(delSource.hasNextLine()){

delRusult.println(delSource.nextLine());

}delSource.close();delRusult.close();System.out.println("操作成功，資料儲存在原文檔data/output.txt中");

}

else System.out.println("取消删除成功！");

}

else System.out.println("沒有該學生資訊，請重新操作。");

}

//修改個人資訊

else {

System.out.println("輸入名字和修改科目(1-5):高數1；英語2；馬列3；c語言；計技基礎5和新的分數");String name=input.next();int subject=input.nextInt();int num=input.nextInt();

for(int i=0;i

if(student[i][1].equals(name)||student[i][0].equals(name)){

System.out.println();scores[i][subject-1]=num;System.out.println(scores[i][subject-1]);

}

}

PrintWriter editMid=new PrintWriter(new File("data/editMid.txt"));

for(int i=0;i

for(int n=0;n<3;n++){editMid.print(student[i][n]+" ");}//列印到文檔

for(int n=0;n<5;n++){if(n!=4)editMid.print(scores[i][n]+" ");else editMid.println(scores[i][n]);}

}editMid.close();//需要确定文檔名

Scanner editSource=new Scanner(new File("data/editMid.txt"));PrintWriter editResult=new PrintWriter(new File("data/output.txt"));

while(editSource.hasNextLine()){

editResult.println(editSource.nextLine());

}editSource.close();editResult.close();

System.out.println("操作成功，資料儲存在data/output.txt文檔中");

System.out.println(Arrays.toString(student[1])+" "+Arrays.toString(scores[1]));

}

break;

case 2:

//總分統計

java.io.PrintWriter sumData=new java.io.PrintWriter("data/總分統計.txt");

for(int i=0;i

sumData.print(Arrays.toString(student[i]));sumData.println(Sum[i]);

}sumData.close();System.out.println("資料儲存于data/總分統計.txt文檔中");

break;

case 3:

//單科最高分和最低分：儲存到SumSingle數組中。平均分儲存到SingleAverage數組中

double[] maxSingle=new double[5];double[] SingleAverage=new double[5];double[] minSingle=new double[5];

double sum1=0;double sum2=0;double sum3=0;double sum4=0;double sum5=0;double max=0;double min=0;

//單科平均分

for(int i=0;i

sum1+=scores[i][0];sum2+=scores[i][1];sum3+=scores[i][2];sum4+=scores[i][3];sum5+=scores[i][4];

}

SingleAverage[0]=(sum1*1.0)/studentNum;SingleAverage[1]=((sum2)*1.0)/studentNum;SingleAverage[2]=(sum3*1.0)/studentNum;

SingleAverage[3]=(sum4*1.0)/studentNum;SingleAverage[4]=(sum5*1.0)/studentNum;

//單科最高分和最低分

for(int n=0;n<5;n++){

max=scores[0][n];min=scores[0][n];

for(int i=1;i

if(scores[i][n]>max) max=scores[i][n];

else if(scores[i][n]

}

maxSingle[n]=max;minSingle[n]=min;

}

PrintWriter singleData=new PrintWriter("data/各科目資料.txt");//輸出到文檔

singleData.println("data    高數    英語      馬列    c語言  計技基礎");

singleData.print("最高分：  ");for(int i=0;i<5;i++){if(i!=4)singleData.print(maxSingle[i]+"    ");else singleData.println(maxSingle[i]);}

singleData.print("最低分：  ");for(int i=0;i<5;i++){if(i!=4)singleData.print(minSingle[i]+"    ");else singleData.println(minSingle[i]);}

singleData.print("平均分：  ");for(int i=0;i<5;i++){if(i!=4)singleData.print(SingleAverage[i]+"    ");else singleData.println(SingleAverage[i]);}

singleData.close();

System.out.println("操作成功：顯示為單科最高分，最低分和平均分(資料儲存在data/各科目資料.txt中)");

System.out.println("最高分："+Arrays.toString(maxSingle)+"最低分："+Arrays.toString(minSingle)+"平局分："+Arrays.toString(SingleAverage));//列印檢驗

break;

case 4:

//按總分排名查詢

System.out.println("輸入總分名次：");int degree=input.nextInt();

System.out.println("第"+(degree)+"名："+Arrays.toString(student[degree-1])+Sum[degree-1]);//排名檢索實作

break;

case 5:

//按資訊查詢結果

System.out.println("請輸入要查詢的基本資訊：名字，學号，性别");String s=input.next();

for(int i=0;i

for(int n=0;n<3;n++){

if(s.equals(student[i][n])){

System.out.println("該人資訊為："+Arrays.toString(student[i])+" 高數："+scores[i][0]+" 英語："+scores[i][1]+" 馬列："+scores[i][2]

+" c語言："+scores[i][3]+" 計技基礎："+scores[i][4]+"總分："+Sum[i]+"總分第"+(i+1)+"名");

}

}

}break;

case 6:

//列印成績報表

PrintWriter form=new PrintWriter("data/成績報表.txt");form.println("                班級成績報表                         ");

form.println("學号        姓名    高數    英語   馬列  c語言 計技基礎  總分  ");

for(int i=0;i

for(int n=0;n<2;n++){form.print(student[i][n]+"     ");}

for(int n=0;n<5;n++){form.print(scores[i][n]+"     ");}

form.println(" "+Sum[i]);

}form.close();

System.out.println("操作成功，資料儲存在data/成績報表.txt中");

break;

default://輸入無效是報錯。

System.out.println("輸入無效！\n系統自動退出");

break;

}

System.out.println("繼續輸入任意數字，退出輸入out");

enter=input.next();

}

System.out.println("已經安全退出系統！");

}

}