設計說明:
1. 請比較一台Note 15的筆電和一個PC類別的桌上型電腦何者售價較貴。
2. 請新增一個名為AllPC的類別,於此類別中撰寫isExpensive方法,此方法龍夠比較何者的售價較貴,並傳回一個布林值,顯示如執行結果參考畫面。
參考程式碼:
TQC+ Java 試題總整理
- class Unit{
 - int cost;
 - Unit(){cost = 0;}
 - public int cost(){return cost;}
 - }
 - class LCD extends Unit{
 - LCD(int i){
 - if (i==10) cost=2000;
 - else if (i==15) cost=2500;
 - else if (i==17) cost=3000;
 - }
 - }
 - class CPU extends Unit{
 - CPU(double i){
 - if (i==1.66) cost=6000;
 - else if (i==2.2) cost=8000;
 - else if (i==2.4) cost=11000;
 - }
 - }
 - class HD extends Unit{
 - HD(int i){
 - if (i==120) cost=2400;
 - else if (i==160) cost=2800;
 - }
 - }
 - class computer{
 - double getCost;
 - double getPrice;
 - computer(){getCost = 0;getPrice = 0;}
 - public double getCost(){return getCost;}
 - public double getPrice(){return getPrice;}
 - }
 - class PC extends computer{
 - PC(){
 - getCost=new CPU(2.4).cost() + new HD(160).cost()+500;
 - getPrice=(new CPU(2.4).cost() + new HD(160).cost())*1.8;
 - }
 - }
 - class Note15 extends computer{
 - Note15(){
 - getCost = (new LCD(15).cost + new CPU(2.2).cost + new HD(160).cost)*1.4;
 - getPrice = (new LCD(15).cost + new CPU(2.2).cost + new HD(160).cost)*2;
 - }
 - }
 - class AllPC{
 - double pc, note15;
 - AllPC(double a,double b){
 - pc=a;
 - note15=b;
 - }
 - public boolean isExpensive(){
 - if (pc>note15) return true;
 - else return false;
 - }
 - }
 - public class JPA602_3{
 - public static void main(String args[]){
 - PC pc = new PC();
 - Note15 note15 = new Note15();
 - AllPC allpc =new AllPC(pc.getPrice(),note15.getPrice());
 - if (allpc.isExpensive())System.out.println("PC is more expensive than Note15");
 - else System.out.println("Note15 is more expensive than PC");
 - }
 - }
 
TQC+ Java 試題總整理
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