javaj1.设计一个学生类Student，其属性有name（姓名），age（年龄）和degree（学位） 2.由Student类派生出本科生类Undergraduate和研究生类Graduate 3.Undergraduate类增加属性specialty（专业） 4.Graduate类增加属性direction（研究方向） 5.每个类都有show（）方法，输出其属性信息

Sure, I'd love to answer your question about Java programming. Here's an implementation of the Student class and its derived classes:

public class Student {
    protected String name;
    protected int age;
    protected String degree;
    
    public Student(String name, int age, String degree) {
        this.name = name;
        this.age = age;
        this.degree = degree;
    }
    
    public void show() {
        System.out.printf("Name: %s\nAge: %d\nDegree: %s\n", name, age, degree);
    }
}

public class Undergraduate extends Student {
    private String specialty;
    
    public Undergraduate(String name, int age, String degree, String specialty) {
        super(name, age, degree);
        this.specialty = specialty;
    }
    
    public void show() {
        super.show();
        System.out.printf("Specialty: %s\n", specialty);
    }
}

public class Graduate extends Student {
    private String direction;
    
    public Graduate(String name, int age, String degree, String direction) {
        super(name, age, degree);
        this.direction = direction;
    }
    
    public void show() {
        super.show();
        System.out.printf("Direction: %s\n", direction);
    }
}

Here's how you can use these classes to create instances and display their information:

public static void main(String[] args) {
    Student s1 = new Student("John", 20, "Bachelor");
    s1.show(); // Name: John\nAge: 20\nDegree: Bachelor
    
    Student s2 = new Undergraduate("Alice", 19, "Bachelor", "Computer Science");
    s2.show(); // Name: Alice\nAge: 19\nDegree: Bachelor\nSpecialty: Computer Science
    
    Student s3 = new Graduate("Bob", 25, "Master", "Artificial Intelligence");
    s3.show(); // Name: Bob\nAge: 25\nDegree: Master\nDirection: Artificial Intelligence
}

I hope this helps! Let me know if you have any more questions about Java programming.