创建Laptop类
?代码如下：
public class Laptop extends Computer implements NetCard,USB {
private String name;
??? public String getName() {
??????? return name;
??? }
??? public void setName(String name) {
??????? this.name = name;
??? }
??? @Override
??? public void compute() {
??????? System.out.println("笔记本电脑["+ name +"]正在计算中......");
??? }
??? @Override
??? public void compute(String item) {
??????? System.out.println("笔记本电脑["+ name +"]正在计算["+ item +"].");
??? }
??? @Override
??? public void connectNetwork() {
??????? System.out.println("笔记本电脑[" + name +"]正在连接网络....");
??? }
??? @Override
??? public void connectUSB() {
??????? System.out.println("笔记本电脑["+ name +"]正在连接USB接口......");
??? }
}
创建测试TextLaptop
代码如下：?
public class TestLaptop {
??? public static void main(String[] args)throws IOException {
??????? String name,item;
??????? BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
??????? System.out.println("笔记本电脑名:");
??????? name = br.readLine();
??????? System.out.println("计算机的项目名:");
??????? item = br.readLine();
??????? //基于无参构造方法创建对象
??????? Laptop laptop = new Laptop();
??????? //设置对象属性
??????? laptop.setName(name);
??????? //调用对象方法
??????? laptop.connectUSB();
??????? laptop.connectNetwork();
??????? laptop.compute();
??????? laptop.compute(item);
??? }
}
创建NetCard
?
public interface NetCard {
??? void connectNetwork();//抽象方法，默认是public权限
??? default void speak() {//缺省方法（从JDK8开始）
??????? System.out.println("网络用于连接网络....");
??? }
??? static void tell() {//
??? }
}
创建USB
?
?
