将集合中的学生对象输出到指定文件中

package day10_18;
import java.io.BufferedWriter;
import java.io.FileWriter;
import java.io.IOException;
import java.util.ArrayList;

public class CopyStudentDate {
    public static void main(String[] args) throws IOException {
        ArrayList<Student>arrayList=new ArrayList<>();
        Student student1=new Student("001","张三丰",18,"江西南昌");
        Student student2=new Student("002","李连杰",19,"江西南丰");
        Student student3=new Student("003","周星驰",28,"江西赣州");
        arrayList.add(student1);
        arrayList.add(student2);
        arrayList.add(student3);
        BufferedWriter bf=new BufferedWriter(new FileWriter("Gzy_BasicJava\student.txt"));
        for (Student s:arrayList){
            String ss=s.getId()+s.getName()+s.getAge()+s.getAddress();
            bf.write(ss+"	
");
        }
        bf.close();

package day10_18;
public class Student {
    private String id;
    private String name;

    public String getId() {
        return id;
    }

    public void setId(String id) {
        this.id = id;
    }

    public String getName() {
        return name;
    }

    public void setName(String name) {
        this.name = name;
    }

    public int getAge() {
        return age;
    }

    public void setAge(int age) {
        this.age = age;
    }

    public String getAddress() {
        return address;
    }

    public void setAddress(String address) {
        this.address = address;
    }

    public Student(String id, String name, int age, String address) {
        this.id = id;
        this.name = name;
        this.age = age;
        this.address = address;
    }

    private int age;
    private String address;
}

运行效果

 

 

    }
}