用java编写用文件保存学生对象,并且可以添加,删除,查找学生信息

保存，使用java.io.ObjectOutputStream + java.io.FileOutputStream，，，，，，记得要先实现java.io.Serializable

读则是使用java.io.ObjectInputstream和java.io.FileInputStream

正规的写法，创建Student类，要有构造方法，重写toString方法，这个可以改为你需要的格式

public class Student {

private String number

private String name

private char sex

private double[] score=new double[3]

private double ave

private double sum

public String getNumber() {

return number

}

public void setNumber(String number) {

this.number = number

}

public String getName() {

return name

}

public void setName(String name) {

this.name = name

}

public char getSex() {

return sex

}

public void setSex(char sex) {

this.sex = sex

}

public double[] getScore() {

return score

}

public void setScore(double[] score) {

this.score = score

}

public double getAve() {

return ave

}

public void setAve(double ave) {

this.ave = ave

}

public double getSum() {

return sum

}

public void setSum(double sum) {

this.sum = sum

}

@Override

public String toString() {

return "Student [number=" + number + ", name=" + name + ", sex=" + sex

+ ", score=" + Arrays.toString(score) + ", ave=" + ave

+ ", sum=" + sum + "]"

}

public Student() {

}

public Student(String number, String name, char sex, double[] score,

double ave, double sum) {

super()

this.number = number

this.name = name

this.sex = sex

this.score = score

this.ave = ave

this.sum = sum

}

然后你另外写一个类，里面有input 和 output方法来 *** 作你的这个学生类。

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