public class Person {
    
}

public class Student extends Person{
    private String name;

    public Student(String name) {
        this.name = name;
    }

    public Student() {
    }

    public String getName() {
        return name;
    }

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

    @Override
    public String toString() {
        return "Student{" +
                "name=‘" + name + ‘\‘‘ +
                ‘}‘;
    }
}

public class Test01 {
    public static void main(String[] args) {

        //java中子類數組的引用可以轉換為超類數組的引用，而不需要采用強制類型轉換。
 

        Student[] student = new Student[5];

        //但是student和objs引用的是同一個對象
        Person[] person = student;

        //如果試圖存儲一個Person類型的引用就會引發ArrayStoreException異常
        person[0] = new Person();

    }
}

java子類數組的引用轉換成超類數組的引用