在 Java 中擴充套件 Comparable

public class Main {
  public static void main(String[] args) {
    Student s1 = new Student("Bill Gates");
    Student s2 = new Student("James");

    int res = s1.compareTo(s2);
    // comaprison of name of two students using iherited and extended method of
    // compareable.

    System.out.println(res);
  }
}
interface CustomComparable extends Comparable<Student> {
  // Custom interface which extends Comparable.
  // So CustomComparable have inherited method Compareto(Object o)
  public String getName();
}
class Student implements CustomComparable {
  // calss student implements CustomCompareable
  private String name; // String variable
  Student(String s) {
    this.name = s;
  }

  public int compareTo(Student other) { // overiding super method........... .
    return this.name.compareTo(other.getName());
  }

  public String getName() {
    return name;
  }

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

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