java输入和输出实验报告

实验报告

2013学年第 1 学期任课老师：

附：实验源程序代码

//Check类

package Exercise;

import java.io.File;

import java.io.FileInputStream;

import java.io.FileNotFoundException;

import java.io.FileOutputStream;

import java.io.IOException;

import java.io.InputStream;

/**

* @author miao_shadow

* @since 2013-11-25

*

*/

public class Check {

public static void main(String[] args) {

Check check=new Check();

try {

boolean sign=check.CheckCheck();

System.out.println("\r\n"+"文件标志位为："+sign);

if(sign==false){

System.out.println("该文件不存在!");

}

} catch (IOException e) {

e.printStackTrace();

}

}

public boolean CheckExist() throws IOException{

File file=new File("C:/WINDOWS/setuplog.txt");

if(file.exists()){

System.out.println("该文件存在。"+file.getAbsolutePath());

try {

FileInputStream fis=new FileInputStream(file);

int i=fis.read();

while(i!=-1)

{

System.out.print((char)i);

i=fis.read();

}

fis.close();

return true;

} catch (FileNotFoundException e) {

e.printStackTrace();

}

}

return false;

}

}

//Student类

package Exercise;

import java.io.Serializable;

/**

* Student类

* @author miao_shadow

* @since 2013-11-25

*

*/

public class Student implements Serializable{

private int number;

private String name;

private int ChinScore;

private int MathScore;

private int EngScore;

private int num;

public Student(int number,String name,int ChinScore,int MathScore,int EngScore,int num){ this.setNumber(number);

this.setName(name);

this.setChinScore(ChinScore);

this.setMathScore(MathScore);

this.setEngScore(EngScore);

this.setNum(num);

}

public Student(){

}

public void setNumber(int number2) {

this.number = number2;

}

public int getNumber() {

return number;

}

public void setName(String name) {

https://www.360docs.net/doc/eb3771943.html, = name;

}

public String getName() {

return name;

}

public void setChinScore(int chinScore) {

ChinScore = chinScore;

}

public int getChinScore() {

return ChinScore;

}

public void setMathScore(int mathScore) {

MathScore = mathScore;

}

public int getMathScore() {

return MathScore;

}

public void setEngScore(int engScore) {

EngScore = engScore;

}

public int getEngScore() {

return EngScore;

}

public void setNum(int num) {

this.num = num;

}

public int getNum() {

return num;

}

}

//StudentInfo类

package Exercise;

import java.io.File;

import java.io.FileInputStream;

import java.io.FileNotFoundException;

import java.io.FileOutputStream;

import java.io.IOException;

import java.io.ObjectInputStream;

import java.io.ObjectOutputStream;

import java.util.Scanner;

/**

* @author miao_shadow

* @since 2013-11-25

*

*/

public class StudentInfo {

public static void main(String[] args) throws IOException { StudentInfo si=new StudentInfo();

int[] number=new int[5];

Student[] stu=new Student[5];

String[] name=new String[5];

int[] ChinScore=new int[5];

int[] MathScore=new int[5];

int[] EngScore=new int[5];

FileInputStream fis = null;

FileOutputStream fos=null;

ObjectInputStream ois;

File file=new File("C:/Users/Administrator/Desktop/STUDENT.DAT");

if(!file.exists()){

try{

file=new File("C:/Users/Administrator/Desktop/STUDENT.DA T");

}catch(Exception e){

e.printStackTrace();

}

}

fis=new FileInputStream(file);

ois=new ObjectInputStream(fis);

fos=new FileOutputStream(file);

ObjectOutputStream o=new ObjectOutputStream(fos);

Student[] student=new Student[5];

try {

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

Scanner s=new Scanner(System.in);

System.out.println("请输入第"+(i+1)+"个学生的学号");

number[i]=s.nextInt();

System.out.println("请输入第"+(i+1)+"个学生的姓名");

name[i]=s.next();

System.out.println("请输入第"+(i+1)+"个学生的语文成绩");

ChinScore[i]=s.nextInt();

System.out.println("请输入第"+(i+1)+"个学生的数学成绩");

MathScore[i]=s.nextInt();

System.out.println("请输入第"+(i+1)+"个学生的英语成绩");

EngScore[i]=s.nextInt();

int num=ChinScore[i]+MathScore[i]+EngScore[i];

stu[i]=new Student(number[i],name[i],ChinScore[i],MathScore[i],EngScore[i],num);

o.writeObject(stu[i]);

}

} catch (FileNotFoundException e) {

e.printStackTrace();

}

Student st=new Student();

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

try {

student[j]=(Student)ois.readObject();

System.out.println("第"+i+"个学生的总成绩为"+student[j].getNum());

} catch (Exception e) {

e.printStackTrace();

}

}

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

while(m<4){

if(student[m].getNum()>student[m+1].getNum()){

st=student[m];

student[m]=student[m+1];

student[m+1]=st;

m++;

}

else m++;

}

}

System.out.println("平均分最高的学生信息：姓名："+student[4].getName()+

"学号："+student[4].getNumber()+"语文成绩："+student[4].getChinScore()+"数学成绩："+student[4].getMathScore()+"英语成绩："+student[4].getMathScore());

}

}