Java 接口与实现：电视广播大学学生生活案例

// Life.java package pack2;

public interface Life { public String activityO(); }

// Study.java package pack2;

public interface Study { public void lesson(); }

// CollegeLife.java package pack2;

public interface CollegeLife extends Life, Study { public static final String NAME = '电视广播大学'; }

// Student.java package pack2;

public class Student implements CollegeLife { private String name; private String gender;

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

@Override
public String activityO() {
    return '活动方式多种多样！';
}

@Override
public void lesson() {
    System.out.println(name + '正在上课！');
}

public String getName() {
    return name;
}

public String getGender() {
    return gender;
}

}

// TestInterface.java package pack2;

public class TestInterface { public static void main(String[] args) { Student student = new Student('张三', '男'); System.out.println(CollegeLife.NAME + '学生生活概况：主要学习任务是课堂教学！' + student.activityO()); student.lesson(); } }