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 + ‘\‘‘ +
                ‘}‘;
    }
}

泛型類型變量只能調用限定類或限定接口裏面的方法

java泛型類型變量能調用的方法