school 接口
public interface school {
void setSchoolName(String schoolName);
void setClassName(String className);
void setSex(String Sex);
String getSchoolName();
String getClassName();
String getSex();
}
student 实现接口的类
public class student implements school {
private String schoolName;
private String className;
private String Sex;
public String getSchoolName() {
return schoolName;
}
public void setSchoolName(String schoolName) {
this.schoolName = schoolName;
}
public String getClassName() {
return className;
}
public void setClassName(String className) {
this.className = className;
}
public String getSex() {
return Sex;
}
public void setSex(String sex) {
this.Sex = sex;
}
public String toString() {
String str = "学校名称" + schoolName +"班级名称" + className + "性别"+Sex;
return str;
}
public static void main(String[] args) {
student stu = new student();
stu.setSchoolName("济宁示范");
stu.setSex("男");
stu.setClassName("二班");
System.out.println(stu.toString());
}
}
接口
1.接口可以多继承
2.接口的方法声明必须是 public abstract 即便不写默认也是
3.接口里面不能包含方法具体实现
4.类实继承接口必须实现接口里申明的全部方法，除非该类是抽象类
5.类里面可以声明 public static final 修饰的变量
6.接口不能被实例化，但是可以被实现类创建
