我创建了一个程序，其中有一个名为 Student 的新类，它设置和获取不同的变量，例如姓名、GPA、是否注册以及何时注册（这是一个字符串，它的目的是）。问题是，当我尝试将信息存储到数组和/或数组列表中并打印它时，我得到的是打印的哈希代码而不是信息。该程序并不完全完整，但我试图首先解决哈希码问题。如果您能提供帮助，我将不胜感激。先感谢您！
Student st = new Student();
System.out.println(st.getName());
Student1();
Student st1 = new Student("John");
}
public static void Student1() {
System.out.println("Enter the data for student 1 :");
Student st = new Student();
Scanner keyboard = new Scanner(System.in);
String name = keyboard.next();
double GPA = keyboard.nextDouble();
boolean enrolled = keyboard.nextBoolean();
String date = keyboard.next();
for (int i =0; i<5; i++){
Student newStudent = new Student();
newStudent.setName(name);
newStudent.setGPA(GPA);
newStudent.setEnrolled(enrolled);
newStudent.setDate(date);
ArrayList <Student> strList = new ArrayList<Student>();
Student student[] = new Student[5];
newStudent.getName();
student[i] = newStudent;
strList.add(newStudent);
System.out.println(student[i]);
}
学生班
公开课学生{
private String name;
private double gpa;
private boolean enrolled;
private String enrollDate;
public Student() {
this.name = "";
this.gpa = 0.0;
this.enrolled = false;
this.enrollDate = "none";
}
public Student(String name1) {
this.name = name1;
this.gpa = 0.0;
this.enrolled = false;
this.enrollDate = "none";
}
public void setName(String name) {
this.name = name;
}
public String getName() {
return this.name;
}
public void setGPA(double gpa) {
this.gpa = gpa;
}
public double getGPA() {
return this.gpa;
}
public void setEnrolled(boolean enrolled) {
this.enrolled = enrolled;
}
public boolean getEnrolled() {
return this.enrolled;
}
public void setDate(String date) {
}
}
这是因为您要将一个学生对象放入数组中：
Student student[] = new Student[5];
newStudent.getName();
student[i] = newStudent;
strList.add(newStudent);
System.out.println(student[i]);
在这里，当您打印时，您不是打印学生的姓名，而是打印对象本身。每当您对对象执行 System.out.println 时，都会返回哈希码。
这是你的问题吗？
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