- \n
- \u5982\u679c\u5b57\u7b26\u4e32\u4e3a\u201cwithdraw\u201d\u8868\u793a\u53d6\u73b0\u64cd\u4f5c，\u5982\u679c\u64cd\u4f5c\u6210\u529f,\u8f93\u51fa\u201cwithdraw \u201d + money + \u201csuccess\u201d，\u5426\u5219\u8f93\u51fa\u201cwithdraw \u201d + money + \u201cfailed\u201d<\/li>\n
- \u5982\u679c\u5b57\u7b26\u4e32\u4e3a\u201cdeposit\u201d\u8868\u793a\u5b58\u5165\u64cd\u4f5c，\u5b8c\u6210\u64cd\u4f5c\u540e\u8f93\u51fa\u201cdeposit\u201d + money + \u201csuccess\u201d<\/li>\n<\/ul>\n
- \u4f7f\u7528toString\u65b9\u6cd5\u8f93\u51fa\u8d26\u6237a\u4fe1\u606f\u3002<\/li>\n
- \u6839\u636e\u7528\u6237\u8f93\u5165\u7684\u4e09\u4e2a\u6574\u6570id\u3001balance\u548coverdraft\u521b\u5efa\u652f\u7968\u8d26\u6237b；<\/li>\n
- \u8f93\u5165\u4e00\u4e2a\u6574\u6570m，\u8868\u793a\u5bf9\u8d26\u6237b\u6709m\u7b14\u64cd\u4f5c；<\/li>\n
- \u6bcf\u7b14\u64cd\u4f5c\u8f93\u5165\u4e00\u4e2a\u5b57\u7b26\u4e32\u548c\u4e00\u4e2a\u6574\u6570money（\u8868\u793a\u64cd\u4f5c\u91d1\u989d）<\/li>\n
- \n
- \u5982\u679c\u5b57\u7b26\u4e32\u4e3a\u201cwithdraw\u201d\u8868\u793a\u53d6\u73b0\u64cd\u4f5c，\u5982\u679c\u64cd\u4f5c\u6210\u529f,\u8f93\u51fa\u201cwithdraw \u201d + money + \u201csuccess\u201d，\u5426\u5219\u8f93\u51fa\u201cwithdraw \u201d + money + \u201cfailed\u201d<\/li>\n
- \u5982\u679c\u5b57\u7b26\u4e32\u4e3a\u201cdeposit\u201d\u8868\u793a\u5b58\u5165\u64cd\u4f5c，\u5b8c\u6210\u64cd\u4f5c\u540e\u8f93\u51fa\u201cdeposit\u201d + money + \u201csuccess\u201d<\/li>\n<\/ul>\n
- \u4f7f\u7528toString\u65b9\u6cd5\u8f93\u51fa\u8d26\u6237b\u4fe1\u606f\u3002<\/li>\n
\u88c1\u5224\u6d4b\u8bd5\u7a0b\u5e8f\u6837\u4f8b：<\/p>\n
import java.util.Scanner;<\/p>\n
public class Main{
\n public static void main(String args[]){
\n Scanner input = new Scanner(System.in);
\n int n,m;<\/p>\nAccount a = new Account(input.nextInt(),input.nextInt());
\n n = input.nextInt();
\n for(int i=0; i < n; i++) {
\n String op;
\n int money;
\n op = input.next();
\n money = input.nextInt();
\n if(op.equals("withdraw")) {
\n if(a.withdraw(money)) {
\n System.out.println("withdraw " + money + " success");
\n } else {
\n System.out.println("withdraw " + money + " failed");
\n }
\n } else if(op.equals("deposit")) {
\n a.deposit(money);
\n System.out.println("deposit " + money + " success");
\n }
\n }
\n System.out.println(a.toString());<\/p>\nCheckingAccount b = new CheckingAccount(input.nextInt(),input.nextInt(),input.nextInt());
\n m = input.nextInt();
\n for(int i=0; i < m; i++) {
\n String op;
\n int money;
\n op = input.next();
\n money = input.nextInt();
\n if(op.equals("withdraw")) {
\n if(b.withdraw(money)) {
\n System.out.println("withdraw " + money + " success");
\n } else {
\n System.out.println("withdraw " + money + " failed");
\n }
\n } else if(op.equals("deposit")) {
\n b.deposit(money);
\n System.out.println("deposit " + money + " success");
\n }
\n }
\n System.out.println(b.toString());
\n }
\n}<\/p>\n\/* \u8bf7\u5728\u8fd9\u91cc\u586b\u5199\u7b54\u6848 *\/<\/p>\n
\u8f93\u5165\u6837\u4f8b：<\/p>\n
1 100
\n5
\nwithdraw 200
\nwithdraw 100
\ndeposit 50
\ndeposit 100
\nwithdraw 200
\n2 100 200
\n5
\nwithdraw 200
\nwithdraw 100
\ndeposit 50
\ndeposit 100
\nwithdraw 200<\/p>\n\u8f93\u51fa\u6837\u4f8b：<\/p>\n
withdraw 200 failed
\nwithdraw 100 success
\ndeposit 50 success
\ndeposit 100 success
\nwithdraw 200 failed
\nThe balance of account 1 is 150
\nwithdraw 200 success
\nwithdraw 100 success
\ndeposit 50 success
\ndeposit 100 success
\nwithdraw 200 failed
\nThe balance of account 2 is -50<\/p>\n\u5b9e\u73b0\u4ee3\u7801：<\/h3>\n
class Account{
\nprivate int id;
\nprivate int balance;
\npublic Account() {
\n}
\npublic Account(int id, int balance) {
\nthis.id = id;
\nthis.balance = balance;
\n}
\npublic int getBalance() {
\nreturn balance;
\n}
\npublic void setBalance(int balance) {
\nthis.balance = balance;
\n}
\npublic boolean withdraw(int money)
\n{
\nint tmp=balance-money;
\nif(tmp>=0)
\nsetBalance(tmp);
\nreturn tmp>=0;
\n}
\npublic void deposit(int money)
\n{
\nbalance+=money;
\n}
\npublic String toString()
\n{
\nreturn "The balance of account "+id+" is "+balance;
\n}
\n}
\nclass CheckingAccount extends Account{
\nprivate int overdraft;
\npublic CheckingAccount() {
\n}
\npublic CheckingAccount(int id, int balance, int overdraft) {
\nsuper(id, balance);
\nthis.overdraft = overdraft;
\n}
\n @Override
\npublic boolean withdraw(int money) {
\nint tmp=getBalance()+overdraft-money;
\nif(tmp>=0)
\nsetBalance(getBalance()-money);
\nreturn tmp>=0;
\n}
\n}<\/p>\n6-12 \u8bbe\u8ba1Worker\u7c7b\u53ca\u5176\u5b50\u7c7b<\/h2>\n
\u8bbe\u8ba1\u4e00\u4e2aWorker\u7c7b，\u6709\u4ee5\u4e0b\u65b9\u6cd5：
\n（1）\u6784\u9020\u65b9\u6cd5：\u5e26\u4e24\u4e2a\u8f93\u5165\u53c2\u6570：\u5de5\u4eba\u7684\u59d3\u540d\u548c\u5c0f\u65f6\u5de5\u8d44\u3002
\n（2）\u5c0f\u65f6\u5de5\u8d44\u7684get\/set\u65b9\u6cd5
\n（3）pay()\u65b9\u6cd5：\u5e26\u4e00\u4e2a\u5de5\u4f5c\u65f6\u957f\u8f93\u5165\u53c2\u6570，\u8f93\u51fa："Not Implemented"\u3002
\n\u63a5\u4e0b\u6765\u8bbe\u8ba1Worker\u7684\u5b50\u7c7b：HourlyWorker\u548cSalariedWorker\u3002\u4e24\u4e2a\u5b50\u7c7b\u90fd\u91cd\u5199\u7ee7\u627f\u7684\u65b9\u6cd5pay()\u6765\u8ba1\u7b97\u5de5\u4eba\u7684\u5468\u85aa\u3002\u8ba1\u65f6\u5de5\u6309\u5b9e\u9645\u5de5\u65f6\u652f\u4ed8\u6bcf\u5c0f\u65f6\u5de5\u8d44，\u8d85\u8fc740\u5c0f\u65f6\u7684\u8d85\u51fa\u90e8\u5206\u4e3a\u53cc\u500d\u5de5\u8d44\u3002\u8ba1\u85aa\u5de5\u4eba\u7684\u5de5\u8d44\u662f40\u5c0f\u65f6\u7684\u5de5\u8d44，\u4e0d\u7ba1\u5de5\u4f5c\u65f6\u95f4\u662f\u591a\u5c11\u3002\u56e0\u4e3a\u4e0e\u5de5\u4f5c\u65f6\u957f\u65e0\u5173，\u6545SalariedWorker\u7684\u65b9\u6cd5pay()\u53ef\u4ee5\u4e0d\u5e26\u53c2\u6570\u8c03\u7528\u3002<\/p>\n###\u7c7b\u6846\u67b6\u5b9a\u4e49：<\/p>\n
\u8bbe\u8ba1\u7684\u7c7b\u5982\u4e0b\u6846\u67b6\u6240\u793a，\u5b8c\u6210\u540e\u5c06\u8be5\u4e09\u7c7b\u63d0\u4ea4\u3002
\nclass Worker {
\n \u2026\u2026
\n}<\/p>\nclass HourlyWorker extends Worker {
\n \u2026\u2026
\n}
\nclass SalariedWorker extends Worker {
\n \u2026\u2026
\n}<\/p>\n\u88c1\u5224\u6d4b\u8bd5\u7a0b\u5e8f\u6837\u4f8b：<\/p>\n
import java.util.Scanner;<\/p>\n
\/\/Main\u6d4b\u8bd5\u7c7b
\npublic class Main{
\n public static void main(String[] args) {
\n Scanner input = new Scanner(System.in);
\n Worker w1 = new Worker("Joe",15);
\n w1.pay(35);
\n SalariedWorker w2 = new SalariedWorker("Sue",14.5);
\n w2.pay();
\n w2.pay(60);
\n HourlyWorker w3 = new HourlyWorker("Dana", 20);
\n w3.pay(25);
\n w3.setRate(35);
\n int h = input.nextInt(); # \u8f93\u5165\u5c0f\u65f6\u5de5\u7684\u5de5\u4f5c\u65f6\u957f
\n w3.pay(h);
\n }
\n}<\/p>\n\/* \u8bf7\u5728\u8fd9\u91cc\u586b\u5199\u7b54\u6848 *\/<\/p>\n
\u8f93\u5165\u6837\u4f8b：<\/p>\n
\u5728\u8fd9\u91cc\u7ed9\u51fa\u4e00\u7ec4\u8f93\u5165\u3002\u4f8b\u5982：<\/p>\n
25<\/p>\n
\u8f93\u51fa\u6837\u4f8b：<\/p>\n
\u5728\u8fd9\u91cc\u7ed9\u51fa\u76f8\u5e94\u7684\u8f93\u51fa\u3002\u4f8b\u5982：<\/p>\n
Not Implemented
\n580.0
\n580.0
\n500.0
\n875.0<\/p>\n\u5b9e\u73b0\u4ee3\u7801：<\/h3>\n
class Worker
\n{
\nString name;
\ndouble rate;
\npublic Worker(String name, double rate) {
\nthis.name = name;
\nthis.rate = rate;
\n}
\npublic double getRate() {
\nreturn rate;
\n}
\npublic void setRate(double rate) {
\nthis.rate = rate;
\n}
\npublic void pay(int hour)
\n{
\nSystem.out.println("Not Implemented");
\n}
\n}
\nclass HourlyWorker extends Worker{
\npublic HourlyWorker(String name, double rate) {
\nsuper(name, rate);
\n}
\npublic void pay(int hour)
\n{
\nif(hour>40){
\nSystem.out.println(rate*40+(hour-40)*2*rate);
\n}
\nelse
\nSystem.out.println(1.0*hour*rate);
\n}
\n}
\nclass SalariedWorker extends Worker{
\npublic SalariedWorker(String name, double hourSalary) {
\nsuper(name, hourSalary);
\n}
\npublic void pay(int hour)
\n{
\npay();
\n}
\npublic void pay()
\n{
\nSystem.out.println(40.0*rate);
\n}
\n}<\/p>\n6-13 \u56fe\u4e66\u548c\u97f3\u50cf\u79df\u8d41<\/h2>\n
\u56fe\u4e66\u548c\u97f3\u50cf\u5e97\u63d0\u4f9b\u51fa\u79df\u670d\u52a1，\u5305\u62ec\u56fe\u4e66\u548cDVD\u7684\u51fa\u79df\u3002\u56fe\u4e66\u5305\u62ec\u4e66\u540d（String，\u4e00\u4e2a\u8bcd\u8868\u793a）\u548c\u4ef7\u683c（double），DVD\u5305\u62ec\u7247\u540d（String，\u4e00\u4e2a\u8bcd\u8868\u793a）\u3002\u5b83\u4eec\u90fd\u662f\u6309\u5929\u51fa\u79df，\u4f46\u79df\u91d1\u8ba1\u7b97\u65b9\u5f0f\u5374\u4e0d\u540c，\u56fe\u4e66\u7684\u65e5\u79df\u91d1\u4e3a\u56fe\u4e66\u4ef7\u683c\u76841%，DVD\u7684\u65e5\u79df\u91d1\u4e3a\u56fa\u5b9a\u76841\u5143\u3002\u6784\u9020\u56fe\u4e66\u548cDVD\u7c7b\u7684\u7ee7\u627f\u4f53\u7cfb，\u5b83\u4eec\u5747\u7ee7\u627f\u81eaMedia\u7c7b，\u4e14\u63d0\u4f9b\u65b9\u6cd5getDailyRent()\u8fd4\u56de\u65e5\u79df\u91d1，\u6784\u9020\u97f3\u50cf\u5e97\u7c7bMediaShop，\u63d0\u4f9b\u9759\u6001\u51fd\u6570double calculateRent(Media[] medias, int days)\u3002
\n\u5728main\u51fd\u6570\u4e2d\u6784\u9020\u4e86Media\u6570\u7ec4，\u5305\u542b\u56fe\u4e66\u548cDVD\u7684\u5bf9\u8c61，\u8c03\u7528calculateRent\u65b9\u6cd5\u5f97\u5230\u5e76\u8f93\u51fa\u79df\u91d1，\u4fdd\u7559\u5c0f\u6570\u70b9\u4e24\u4f4d<\/p>\n\u8f93\u5165\u63cf\u8ff0：<\/p>\n
\u5f85\u79df\u56fe\u4e66\u548cDVD\u7684\u6570\u91cf<\/p>\n
\u56fe\u4e66\u548cDVD\u7684\u8be6\u7ec6\u4fe1\u606f<\/p>\n
\u79df\u501f\u5929\u6570<\/p>\n
\u8f93\u51fa\u63cf\u8ff0：<\/p>\n
\u603b\u7684\u79df\u91d1<\/p>\n
\u88c1\u5224\u6d4b\u8bd5\u7a0b\u5e8f\u6837\u4f8b：<\/p>\n
import java.util.Scanner;<\/p>\n
public class Main {
\n public static void main(String[] args) {
\n Scanner sc = new Scanner(System.in);
\n int n = sc.nextInt();
\n Media[] ms = new Media[n];
\n for (int i=0; i<n; i++) {
\n String type = sc.next();
\n if (type.equals("book")) {
\n ms[i] = new Book(sc.next(), sc.nextDouble());
\n }else {
\n ms[i] = new DVD(sc.next());
\n }
\n }
\n double rent = MediaShop.calculateRent(ms, sc.nextInt());
\n System.out.printf("%.2f", rent);
\n }
\n}<\/p>\n\/* \u8bf7\u5728\u8fd9\u91cc\u586b\u5199\u7b54\u6848 *\/<\/p>\n
\u8f93\u5165\u6837\u4f8b：<\/p>\n
5
\nbook Earth 25.3
\nbook Insights 34
\ndvd AI
\ndvd Transformer
\nbook Sun 45.6
\n20<\/p>\n\u8f93\u51fa\u6837\u4f8b：<\/p>\n
60.98<\/p>\n
\u5b9e\u73b0\u4ee3\u7801：<\/h3>\n
class Media{
\nString name;
\npublic double getDailyRent(){
\nreturn 0.0;
\n}
\n}
\nclass Book extends Media{
\ndouble price;
\npublic Book(String name,double price)
\n{
\nthis.name=name;
\nthis.price=price;
\n}
\npublic double getDailyRent(){
\nreturn 0.01*price;
\n}
\n}
\nclass DVD extends Media{
\npublic DVD(String name)
\n{
\nthis.name=name;
\n}
\npublic double getDailyRent(){return 1;
\n}
\n}
\nclass MediaShop{
\npublic static double calculateRent(Media[] medias, int days){
\ndouble sum=0;
\nfor(int i=0;i<medias.length;i++)
\n{
\nsum+=medias[i].getDailyRent()*days;
\n}
\nreturn sum;
\n}
\n}<\/p>\n6-14 \u4f7f\u7528\u7ee7\u627f，\u5b9e\u73b0\u201c\u526a\u5200\u77f3\u5934\u5e03\u7684\u6e38\u620f\u201d<\/h2>\n
\u4f7f\u7528\u7ee7\u627f，\u5b9e\u73b0\u201c\u526a\u5200\u77f3\u5934\u5e03\u7684\u6e38\u620f\u201d\u3002<\/p>\n
\u5c0f\u65f6\u5019\u5f88\u559c\u6b22\u73a9\u4e00\u4e2a\u6e38\u620f，\u201c\u526a\u5200\u77f3\u5934\u5e03\u201d，\u53ef\u4ee5\u662f\u51fa\u62f3\u7684\u5f62\u5f0f，\u6216\u8df3\u683c\u5b50\u7684\u5f62\u5f0f\u3002\u73b0\u5728\u6211\u4eec\u7528\u8ba1\u7b97\u673a\u6765\u73a9\u8fd9\u4e2a\u6e38\u620f\u3002
\n\u7535\u8111\u7528\u968f\u673a\u6570\u4ea7\u751f\u526a\u5200\u77f3\u5934\u5e03，\u6e38\u620f\u73a9\u5bb6\u7528\u8f93\u51651，2，3\u7684\u65b9\u5f0f\u51fa\u62f3\u3002
\n\u6e38\u620f\u73a9\u5bb6\u8f93\u51651\u62162\u62163，\u5206\u522b \u4ee3\u8868\u526a\u5200(1)\u77f3\u5934(2)\u5e03(3)\u3002
\n\u7535\u8111\u80dc\u51fa\u65f6，\u663e\u793a"Winner is computerPlayer."
\n\u6e38\u620f\u73a9\u5bb6\u80dc\u51fa\u65f6，\u663e\u793a\u201cWinner is personPlayer.\u201d
\n\u5e73\u5c40\u65f6\u663e\u793a"A Draw."<\/p>\n\u51fd\u6570\u63a5\u53e3\u5b9a\u4e49：<\/p>\n
\u6839\u636e\u4e3b\u65b9\u6cd5\u5185\u5bb9，\u5b9e\u73b0\u4e09\u4e2a\u7c7b\u7684\u5b9a\u4e49，\u5206\u522b\u662f\u662fComputerPlayer\u3001PersonPlayer\u3001Game\u7c7b\u3002
\n\u5176\u4e2dComputerPlayer\u3001PersonPlayer\u8981\u7ee7\u627fPlayer\u7c7b\u3002
\n\u6839\u636e\u4e3b\u65b9\u6cd5\u4e2d\u7684\u7528\u6cd5，\u5b9e\u73b0Game\u7c7b\u3002<\/p>\n\u88c1\u5224\u6d4b\u8bd5\u7a0b\u5e8f\u6837\u4f8b：<\/p>\n
import java.util.Scanner;<\/p>\n
class Player{
\n String name;
\n Player(String name){
\n this.name = name;
\n }
\n int show() { \/\/\u51fa\u62f3\u65b9\u6cd5
\n int show = ( int ) (Math.random() * 10 ) %3 +1;
\n return show ;
\n }
\n}
\n\/* \u8bf7\u5728\u8fd9\u91cc\u586b\u5199\u7b54\u6848 *\/<\/p>\npublic class Main {<\/p>\n
public static void main(String[] args) {
\n ComputerPlayer c = new ComputerPlayer ("computer");
\n PersonPlayer p = new PersonPlayer("player ") ;
\n Game g = new Game( c ,p );
\n g.start();
\n }<\/p>\n}<\/p>\n
\u8f93\u5165\u6837\u4f8b：<\/p>\n
2<\/p>\n
\u8f93\u51fa\u6837\u4f8b：<\/p>\n
A Draw.<\/p>\n
\u5b9e\u73b0\u4ee3\u7801：<\/h3>\n
class ComputerPlayer extends Player {
\n ComputerPlayer(String name) {
\n super(name);\/\/\u5b50\u7c7b\u7684\u6784\u9020\u65b9\u6cd5\u5fc5\u987b\u8c03\u7528\u7236\u7c7b\u7684\u6784\u9020\u65b9\u6cd5，\u4f7f\u7528super\u5173\u952e\u5b57；\u4f7f\u7528super\u5173\u952e\u5b57\u7684\u8fd9\u884c\u8bed\u53e5\u5fc5\u987b\u653e\u5728\u5b50\u7c7b\u7684\u7b2c\u4e00\u884c
\n }
\n}<\/p>\nclass PersonPlayer extends Player{
\n PersonPlayer(String name) {
\n super(name);
\n }
\n int choice(){
\n Scanner scan=new Scanner(System.in);
\n int c=scan.nextInt();
\n return c;
\n }
\n}<\/p>\nclass Game{
\n ComputerPlayer cp;
\n PersonPlayer pp;
\n public Game(ComputerPlayer cp, PersonPlayer pp) {
\n this.cp = cp;\/\/\u5207\u5fcc\u5199\u6210cp=cp
\n this.pp = pp;
\n }
\n \/\/\u5982\u679c\u521a\u5f00\u59cb\u4e0d\u4e60\u60ef\u7528this，\u53ef\u4ee5\u7528\u4e0b\u9762\u66ff\u4ee3
\n \/\/public Game(ComputerPlayer x, PersonPlayer y) {
\n \/\/ x = cp;\/\/\u5207\u5fcc\u5199\u6210cp=cp
\n \/\/ y = pp;
\n \/\/ }<\/p>\nvoid start(){
\n int c=cp.show(),p=pp.choice();
\n if (c==p)
\n System.out.print("A Draw.");
\n else if (c==1&&p==3)
\n System.out.print("Winner is computerPlayer.");
\n else if (p==1&&c==3)
\n System.out.print("Winner is personPlayer.");
\n else if (p<c)
\n System.out.print("Winner is computerPlayer.");
\n else System.out.print("Winner is personPlayer.");
\n }
\n}<\/p>\n6-15 \u6559\u5e08\u3001\u5b66\u751f\u6392\u5e8f<\/h2>\n
\u5df2\u77e5Main\u7c7b\u3001Person\u7c7b\u7684\u8bbe\u8ba1，\u5b8c\u6210Student\u7c7b，Teacher\u7c7b\u3001MyTool\u7c7b\u7684\u8bbe\u8ba1\u3002<\/p>\n
\u51fd\u6570\u63a5\u53e3\u5b9a\u4e49：<\/p>\n
class Student extends Person{ }
\nclass Teacher extends Person{ }
\nclass MyTool{ public static void separateStu_T(List persons,List teachers,List students){} }<\/p>\nStudent\u7c7b\u7ee7\u627f\u4e86Person，\u62e5\u6709\u79c1\u6709\u5c5e\u6027int\u7c7b\u578b\u7684sno\u548cString\u7c7b\u578b\u7684major，\u5206\u522b\u4ee3\u8868\u5b66\u53f7\u4e0e\u6240\u5b66\u4e13\u4e1a；\u63d0\u4f9b\u5bf9\u5e94\u7684set，get\u65b9\u6cd5；\u6bd4\u8f83\u65b9\u6cd5\u5b8c\u6210\u6309\u7167\u5b66\u53f7\u6bd4\u8f83\u3002
\nTeacher\u7c7b\u7ee7\u627f\u4e86Person，\u62e5\u6709\u79c1\u6709\u5c5e\u6027int\u7c7b\u578b\u7684tno\u548cString\u7c7b\u578b\u7684subject，\u5206\u522b\u4ee3\u8868\u6559\u5e08\u7f16\u53f7\u4e0e\u6240\u6388\u79d1\u76ee；\u63d0\u4f9b\u5bf9\u5e94\u7684set，get\u65b9\u6cd5；\u6bd4\u8f83\u65b9\u6cd5\u5b8c\u6210\u6309\u5e74\u9f84\u6bd4\u8f83\u3002
\nMyTool\u7c7b\u4e2d\u63d0\u4f9b\u65b9\u6cd5public static void separateStu_T(List persons,List teachers,List students){}，\u65b9\u6cd5 separateStu_T\u7684\u529f\u80fd\u662f\u5c06persons\u7ebf\u6027\u8868\u4e2d\u7684 teacher，student\u5206\u522b\u653e\u5230teachers,students\u4e24\u4e2a\u7ebf\u6027\u8868\u4e2d\u3002<\/p>\n\u88c1\u5224\u6d4b\u8bd5\u7a0b\u5e8f\u6837\u4f8b：<\/p>\n
import java.util.*;<\/p>\n
public class Main {
\n public static void main(String[] args) {<\/p>\nList persons=getPersons(); \/\/\u5f97\u5230\u4e00\u4e2a\u6240\u6709\u4eba\u7684\u7ebf\u6027\u8868<\/p>\n
List teachers=new ArrayList();
\n List students=new ArrayList();<\/p>\nMyTool.separateStu_T( persons,teachers,students); \/\/\u5c06persons\u7ebf\u6027\u8868\u4e2d\u7684 teacher，student\u5206\u522b\u653e\u5230teachers,students\u4e24\u4e2a\u7ebf\u6027\u8868\u4e2d<\/p>\n
Collections.sort(teachers); \/\/\u5bf9\u6559\u5e08\u7ebf\u6027\u8868\u6392\u5e8f
\n Collections.sort(students); \/\/\u5bf9\u5b66\u751f\u7ebf\u6027\u8868\u6392\u5e8f<\/p>\nshowResult(teachers); \/\/\u663e\u793a\u6559\u5e08\u7ebf\u6027\u8868\u6392\u5e8f\u4ee5\u540e\u7684\u7ed3\u679c
\n showResult(students); \/\/\u663e\u793a\u5b66\u751f\u7ebf\u6027\u8868\u6392\u5e8f\u4ee5\u540e\u7684\u7ed3\u679c<\/p>\n}<\/p>\n
public static List getPersons()
\n {
\n List persons=new ArrayList();<\/p>\nScanner in=new Scanner(System.in);
\n Person person=null;<\/p>\nint num=Integer.parseInt(in.nextLine());<\/p>\n
for(int i=0;i<num;i++)
\n { String str=in.nextLine();
\n String []data=str.split(",");<\/p>\nif(data[0].equalsIgnoreCase("student"))
\n person=new Student(Integer.parseInt(data[1]),data[2],data[3],Integer.parseInt(data[4]),data[5]);
\n else if (data[0].equalsIgnoreCase("teacher"))
\n person=new Teacher(Integer.parseInt(data[1]),data[2],data[3],Integer.parseInt(data[4]),data[5]);
\n else person=null;
\n persons.add(person);
\n }
\n return persons;
\n }<\/p>\npublic static void showResult(List persons)
\n {
\n for(int i=0;i<persons.size();i++)
\n {
\n Person per=(Person)persons.get(i);
\n System.out.println(per.getName()+","+per.getGender()+","+per.getAge());
\n }
\n }<\/p>\n} <\/p>\n
abstract class Person implements Comparable
\n{ private String name;
\n private String gender;
\n private int age;<\/p>\npublic String getName() {
\n return name;
\n }<\/p>\npublic void setName(String name) {
\n this.name = name;
\n }<\/p>\npublic String getGender() {
\n return gender;
\n }<\/p>\npublic void setGender(String gender) {
\n this.gender = gender;
\n }<\/p>\npublic int getAge() {
\n return age;
\n }<\/p>\npublic void setAge(int age) {
\n this.age = age;
\n }<\/p>\npublic Person(String name, String gender, int age) {
\n super();
\n this.name = name;
\n this.gender = gender;
\n this.age = age;
\n }<\/p>\n}<\/p>\n
\/* \u8bf7\u5728\u8fd9\u91cc\u5199\u4f60\u7684\u4ee3\u7801 *\/<\/p>\n
\u8f93\u5165\u6837\u4f8b：<\/p>\n
\u8f93\u5165\u7684\u7b2c\u4e00\u884c\u662f\u603b\u4eba\u6570n，\u7d27\u8ddf\u7740\u8f93\u5165n\u884c，\u6bcf\u4e00\u884c\u4ee3\u8868\u4e00\u4e2a\u4eba\u7684\u4fe1\u606f\u3002\u4e0b\u9762\u7684\u4f8b\u5b50\u4e2dn=5，\u8f93\u5165\u4e865\u4e2a\u4eba\u7684\u4fe1\u606f\u3002<\/p>\n
5
\nstudent,1001,Tom1,female,18,computer
\nteacher,2001,Jake1,female,35,datastructer
\nstudent,1002,Tom2,male,19,computer
\nstudent,1003,Tom3,female,20,software
\nteacher,2002,Jake2,female,33,database<\/p>\n\u8f93\u51fa\u6837\u4f8b：<\/p>\n
\u6ce8\u610f：\u672c\u6837\u4f8b\u8f93\u51fa\u7ed3\u679c\u4e2d\u4e24\u540d\u6559\u5e08\u662f\u6309\u7167\u5e74\u9f84\u5347\u5e8f\u6392\u5e8f\u7684，\u4e09\u540d\u5b66\u751f\u662f\u6309\u7167\u5b66\u53f7\u964d\u5e8f\u6392\u5e8f\u7684\u3002<\/p>\n
Jake2,female,33
\nJake1,female,35
\nTom3,female,20
\nTom2,male,19
\nTom1,female,18<\/p>\n\u5b9e\u73b0\u4ee3\u7801：<\/h3>\n
class Student extends Person{
\nprivate int sno;
\nprivate String major;
\npublic Student(int sno, String name, String gender, int age, String major) {
\nsuper(name, gender, age);
\nthis.sno = sno;
\nthis.major = major;
\n}
\npublic int getSno() {
\nreturn sno;
\n}
\npublic void setSno(int sno) {
\nthis.sno = sno;
\n}
\npublic String getMajor() {
\nreturn major;
\n}
\npublic void setMajor(String major) {
\nthis.major = major;
\n}
\n@Override
\npublic int compareTo(Object o) {
\nStudent temp = (Student)o;
\nif (this.sno < temp.sno){
\nreturn 1;
\n}
\nif (this.sno == temp.sno){
\nreturn 0;
\n}
\nreturn -1;
\n}
\n}
\nclass Teacher extends Person{
\nprivate int tno;
\nprivate String subject;
\npublic Teacher(int tno, String name, String gender, int age, String subject) {
\nsuper(name, gender, age);
\nthis.tno = tno;
\nthis.subject = subject;
\n}
\npublic int getTno() {
\nreturn tno;
\n}
\npublic void setTno(int tno) {
\nthis.tno = tno;
\n}public String getSubject() {
\nreturn subject;
\n}
\npublic void setSubject(String subject) {
\nthis.subject = subject;
\n}
\n@Override
\npublic int compareTo(Object o) {
\nTeacher temp = (Teacher)o;
\nif (this.getAge() > temp.getAge()){
\nreturn 1;
\n}
\nif (this.getAge() == temp.getAge()){
\nreturn 0;
\n}
\nreturn -1;
\n}
\n}
\nclass MyTool{
\npublic static void separateStu_T(List persons,List teachers,List students){
\nfor (int i = 0; i < persons.size(); i++){
\nif (persons.get(i) instanceof Student){
\nstudents.add(persons.get(i));
\n}
\nif (persons.get(i) instanceof Teacher){
\nteachers.add(persons.get(i));
\n}
\n}
\n}
\n}<\/p>\n6-16 \u8bbe\u8ba1\u95e8\u7968（\u62bd\u8c61\u7c7b）<\/h2>\n
\u67d0\u5b66\u6821\u4e3e\u529e\u4e00\u6b21\u6d3b\u52a8，\u9700\u8981\u51ed\u7968\u53c2\u52a0，\u6bcf\u5f20\u7968\u90fd\u6709\u7968\u53f7\u548c\u552e\u4ef7\u3002
\n\u95e8\u7968\u5206\u4e3a3\u7c7b：\u5f53\u5929\u7968，\u9884\u8ba2\u7968\u548c\u5b66\u751f\u9884\u8ba2\u7968\u3002
\n\u5f53\u5929\u7968\u4ef7\u683c50\u3002
\n\u9884\u8ba2\u7968，\u63d0\u524d\u65f6\u95f4>10\u5929\u7684，\u552e\u4ef730；\u63d0\u524d10\u5929\u4ee5\u5185\u7684，\u552e\u4ef740；
\n\u5b66\u751f\u9884\u8ba2\u7968，\u63d0\u524d\u65f6\u95f4>10\u5929\u7684，\u552e\u4ef715；\u63d0\u524d10\u5929\u4ee5\u5185\u7684，\u552e\u4ef720\u3002<\/p>\n（1）\u7f16\u5199\u62bd\u8c61\u7c7bTicket\u7c7b，\u5305\u542b\u4ee5\u4e0b\u6210\u5458
\n\u2460\u5c5e\u6027：
\nnumber：\u79c1\u6709，int\u578b，\u8868\u793a\u7968\u53f7；
\n\u2461\u65b9\u6cd5：<\/p>\n - Ticket(int number), \u6784\u9020\u65b9\u6cd5,\u521d\u59cb\u5316\u7968\u53f7；<\/li>\n
- int getPrice(), \u8fd4\u56de\u7968\u4ef7，\u62bd\u8c61\u65b9\u6cd5；<\/li>\n
- String toString()，\u8fd4\u56de\u4e00\u4e2a\u5b57\u7b26\u4e32，\u683c\u5f0f\u4e3a\u201cNumber:\u7968\u53f7,Price:\u7968\u4ef7\u201d\u3002<\/li>\n
（2）\u7f16\u5199Ticket\u7c7b\u7684\u5b50\u7c7bWalkupTicket，\u8868\u793a\u5f53\u5929\u7968，\u5305\u542b\u4ee5\u4e0b\u6210\u5458
\n\u2460\u65b9\u6cd5：
\n1)WalkupTicket(int number), \u6784\u9020\u65b9\u6cd5,\u521d\u59cb\u5316\u7968\u53f7；
\n2)int getPrice(), \u8fd4\u56de\u7968\u4ef750\u3002<\/p>\n（3）\u7f16\u5199Ticket\u7c7b\u7684\u5b50\u7c7bAdvanceTicket，\u8868\u793a\u9884\u8ba2\u7968，\u5305\u542b\u4ee5\u4e0b\u6210\u5458
\n\u2460\u5c5e\u6027：<\/p>\n - leadTime：\u79c1\u6709，int\u578b，\u8868\u793a\u63d0\u524d\u9884\u8ba2\u7684\u5929\u6570；
\n\u2461\u65b9\u6cd5：<\/li>\n - AdvanceTicket(int number,int leadTime), \u6784\u9020\u65b9\u6cd5,\u521d\u59cb\u5316\u7968\u53f7\u548c\u63d0\u524d\u5929\u6570；<\/li>\n
- int getPrice(), \u5982\u679c\u63d0\u524d\u5929\u6570>10\u5929，\u7968\u4ef730，\u5426\u5219，\u7968\u4ef740\u3002<\/li>\n
（4）\u7f16\u5199AdvanceTicket\u7c7b\u7684\u5b50\u7c7bStudentAdvanceTicket，\u8868\u793a\u5b66\u751f\u9884\u8ba2\u7968，\u5305\u542b\u4ee5\u4e0b\u6210\u5458
\n\u2460\u5c5e\u6027：<\/p>\n - \n
height：\u79c1\u6709，int\u578b，\u8868\u793a\u8d2d\u7968\u5b66\u751f\u7684\u8eab\u9ad8（\u5355\u4f4d\u5398\u7c73）；
\n\u2461\u65b9\u6cd5：
\n1）StudentAdvanceTicket(int number,int leadTime,int height), \u6784\u9020\u65b9\u6cd5,\u521d\u59cb\u5316\u7968\u53f7\u3001\u63d0\u524d\u5929\u6570\u548c\u8eab\u9ad8；
\n2）int getPrice(),<\/p>\n\u5982\u679c\u5b66\u751f\u8eab\u9ad8>120：\u63d0\u524d\u5929\u6570>10\u5929，\u7968\u4ef720，\u5426\u5219，\u7968\u4ef730\u3002
\n\u5982\u679c\u5b66\u751f\u8eab\u9ad8<=120，\u7968\u4ef7\u662f\u8eab\u9ad8120\u4ee5\u4e0a\u5b66\u751f\u7684\u5bf9\u6298\u3002<\/p>\n<\/li>\n\u88c1\u5224\u6d4b\u8bd5\u7a0b\u5e8f\u6837\u4f8b：<\/p>\n
public class Main{
\n public static void main(String args[]) {
\n Scanner in = new Scanner(System.in);
\n Ticket a = new WalkupTicket(in.nextInt());
\n System.out.println(a.toString());
\n Ticket b = new AdvanceTicket(in.nextInt(), in.nextInt());
\n System.out.println(b.toString());
\n Ticket c = new StudentAdvanceTicket(in.nextInt(), in.nextInt(), in.nextInt());
\n System.out.println(c.toString());
\n }
\n}<\/p>\n\/* \u8bf7\u5728\u8fd9\u91cc\u586b\u5199\u7b54\u6848 *\/<\/p>\n
\u6309\u5982\u4e0b\u6846\u67b6\u8bbe\u8ba1\u7c7b\u540e\u63d0\u4ea4\u5373\u53ef：<\/p>\n
abstract class Ticket {
\n\u2026\u2026
\n}
\nclass WalkupTicket extends Ticket {
\n\u2026\u2026
\n}
\nclass AdvanceTicket extends Ticket {
\n\u2026\u2026
\n}
\nclass StudentAdvanceTicket extends AdvanceTicket {
\n\u2026\u2026
\n}<\/p>\n\u8f93\u5165\u6837\u4f8b：<\/p>\n
\u8f93\u5165\u7968\u53f7，\u521b\u5efa\u4e00\u4e2aWalkupTicket\u5bf9\u8c61\u3002
\n\u8f93\u5165\u7968\u53f7\u548c\u63d0\u524d\u5929\u6570，\u521b\u5efa\u4e00\u4e2aAdvanceTicket\u5bf9\u8c61\u3002
\n\u8f93\u5165\u7968\u53f7\u3001\u63d0\u524d\u5929\u6570\u548c\u8eab\u9ad8，\u521b\u5efa\u4e00\u4e2aStudentAdvanceTicket\u5bf9\u8c61\u3002<\/p>\n1
\n2 10
\n3 11 130<\/p>\n\u8f93\u51fa\u6837\u4f8b：<\/p>\n
\u8f93\u51fa\u521b\u5efa\u76843\u4e2a\u5bf9\u8c61\u7684\u7968\u53f7\u548c\u7968\u4ef7（\u8c03\u7528toString()\u65b9\u6cd5）\u3002<\/p>\n
Number:1,Price:50
\nNumber:2,Price:40
\nNumber:3,Price:20<\/p>\n\u5b9e\u73b0\u4ee3\u7801：<\/h3>\n
abstract class Ticket {
\nint number;
\npublic Ticket(int number) {
\nthis.number=number;
\n}
\nabstract public int getPrice();
\nabstract public String toString();
\n}
\nclass WalkupTicket extends Ticket {
\nint price;
\npublic WalkupTicket(int number) {
\nsuper(number);
\nthis.price=50;
\n}
\npublic int getPrice() {
\nreturn this.price;
\n}
\npublic String toString() {
\nreturn "Number:"+this.number+",Price:"+this.price;
\n}
\n}
\nclass AdvanceTicket extends Ticket {
\nint leadTime;
\nint price;
\npublic AdvanceTicket(int number,int leadTime) {
\nsuper(number);
\nthis.leadTime=leadTime;
\nif(leadTime>10)this.price=30;
\nelse this.price=40;
\n}
\npublic int getPrice() {
\nreturn this.price;
\n}
\npublic String toString() {
\nreturn "Number:"+this.number+",Price:"+this.price;
\n }
\n}
\nclass StudentAdvanceTicket extends AdvanceTicket {
\nint height;
\nint price;
\npublic StudentAdvanceTicket(int number,int leadTime,int height) {
\nsuper(number,leadTime);
\nthis.height=height;
\nif(height>120) {
\nif(leadTime>10)this.price=20;
\nelse this.price=30;
\n}else {
\nif(leadTime>10)this.price=10;
\nelse this.price=15;
\n}
\n}
\npublic int getPrice() {
\nreturn this.price;
\n}
\npublic String toString() {
\nreturn "Number:"+this.number+",Price:"+this.price;
\n}
\n}<\/p>\n6-17 \u53ef\u6bd4\u8f83\u7684\u51e0\u4f55\u7c7b（\u62bd\u8c61\u7c7b\u4e0e\u63a5\u53e3）<\/h2>\n
\u901a\u8fc7\u7ee7\u627f\u548c\u591a\u6001\u7684\u5b66\u4e60，\u540c\u5b66\u4eec\u719f\u6089\u4e86GeometricObject\u7c7b，\u73b0\u5728\u7528\u62bd\u8c61\u7c7b\u7684\u89c2\u70b9，\u4fee\u6539GeometricObject\u7c7b\u4ee5\u5b9e\u73b0Comparable\u63a5\u53e3，\u4e14\u5728GeometricObject\u7c7b\u4e2d\u5b9a\u4e49\u4e00\u4e2a\u9759\u6001\u65b9\u6cd5：\u6c42\u4e24\u4e2aGeometricObject\u5bf9\u8c61\u4e2d\u8f83\u5927\u8005\u3002<\/p>\n
\u6b64\u9898\u63d0\u4ea4\u65f6\u5c06\u4f1a\u9644\u52a0\u4e0b\u8ff0\u4ee3\u7801\u5230\u88ab\u63d0\u4ea4\u7684Java\u7a0b\u5e8f\u672b\u5c3e\u3002<\/p>\n
\u88c1\u5224\u6d4b\u8bd5\u7a0b\u5e8f\u6837\u4f8b：<\/p>\n
public class Main {
\n public static void main(String[] args) {
\n Scanner input = new Scanner(System.in);<\/p>\nCircle circle1 = new Circle(input.nextInt());
\n Circle circle2 = new Circle(input.nextInt());<\/p>\nCircle circle = (Circle) GeometricObject.max(circle1, circle2);
\n System.out.println("The max circle's radius is " + circle.getRadius());
\n System.out.println(circle);
\n }
\n}<\/p>\n\/* \u8bf7\u5728\u8fd9\u91cc\u586b\u5199\u7b54\u6848 *\/<\/p>\n
\u8f93\u5165\u6837\u4f8b：<\/p>\n
\u5728\u8fd9\u91cc\u7ed9\u51fa\u4e00\u7ec4\u8f93\u5165\u3002\u4f8b\u5982：<\/p>\n
4 10<\/p>\n
\u8f93\u51fa\u6837\u4f8b：<\/p>\n
\u5728\u8fd9\u91cc\u7ed9\u51fa\u76f8\u5e94\u7684\u8f93\u51fa\u3002\u4f8b\u5982：<\/p>\n
The max circle's radius is 10.0
\nCircle radius = 10.0<\/p>\n\u5b9e\u73b0\u4ee3\u7801：<\/h3>\n
class Circle implements GeometricObject
\n{
\npublic double getRadius()
\n{
\nreturn radius;
\n}
\npublic String toString()
\n{
\nreturn "Circle radius = "+radius;
\n}
\ndouble radius;
\nCircle(int radius)
\n{
\nthis.radius=(double) radius;
\n}
\n}
\ninterface GeometricObject
\n{
\nstatic Circle max(Circle c1, Circle c2)
\n{
\nif(c1.radius>=c2.radius)
\n{
\nreturn c1;
\n}else return c2;
\n}
\n}<\/p>\n6-18 \u9762\u79ef\u6c42\u548c<\/h2>\n
\u7531\u4e8e\u5404\u79cd\u56fe\u5f62 \u6c42\u9762\u79ef\u7684\u65b9\u5f0f\u4e0d\u4e00\u6837，\u4e3a\u4e86\u4f7f\u7f16\u5199\u7684\u7a0b\u5e8f\u80fd\u591f\u9002\u5e94\u6c42\u4e0d\u540c\u5f62\u72b6\u7684\u9762\u79ef\u548c，\u5f53\u65b0\u589e\u52a0\u4e00\u4e2a\u56fe\u5f62\u7684\u65f6\u5019，\u4e0d\u9700\u8981\u4fee\u6539\u5176\u4ed6\u7c7b，\u91c7\u7528\u9762\u5411\u63a5\u53e3\u7684\u7f16\u7a0b，\u5176\u7c7b\u56fe\u5982\u4e0b\u56fe\u6240\u793a：<\/p>\n<\/p>\n
![\"\u7ed8\u56fe1.jpg\"](\"https:\/\/www.wsisp.com\/helps\/wp-content\/uploads\/2026\/01\/20260131155709-697e265519fdf.jpg\")
<\/p>\n\u6839\u636e\u4ee5\u4e0a\u7c7b\u56fe，\u4f60\u9700\u8981\u8bbe\u8ba1\u548c\u7f16\u5199\u5982\u4e0b\u7c7b：
\n1.IGeometry\u63a5\u53e3\u7c7b ，\u91cc\u9762\u6709double getArea()\u63a5\u53e3\u65b9\u6cd5
\n2.Rect\u7c7b\u5b9e\u73b0\u63a5\u53e3，\u6709\u5c5e\u6027 a,b,\u6709\u53c2\u6784\u9020\u65b9\u6cd5\u53ca\u5bf9\u63a5\u53e3\u65b9\u6cd5\u7684\u5b9e\u73b0
\n3.Circle\u7c7b\u5b9e\u73b0\u63a5\u53e3，\u6709\u5c5e\u6027r，\u6709\u53c2\u6784\u9020\u65b9\u6cd5\u53ca\u5bf9\u63a5\u53e3\u65b9\u6cd5\u7684\u5b9e\u73b0，\u5176\u4e2dPI=3.14
\n4.TotalArea\u7c7b\u5b8c\u6210\u5bf9\u4e0d\u540c\u5f62\u72b6\u56fe\u5f62\u9762\u79ef\u6c42\u548c，\u6709\u5c5e\u6027IGeometry[] tuxing \u6570\u7ec4\u7528\u6765\u5b58\u50a8 \u4e0d\u540c\u5f62\u72b6\u56fe\u5f62\u5bf9\u8c61，SetTuxing(IGeometry[] t) \u7ed9\u5c5e\u6027tuxing\u8d4b\u503c，double computeTotalArea()\u65b9\u6cd5\u7528\u6765\u8ba1\u7b97tuxing\u6570\u7ec4\u4e2d\u5b58\u653e\u7684\u56fe\u5f62\u7684\u9762\u79ef\u548c，\u5e76\u8fd4\u56de\u9762\u79ef\u548c\u3002<\/p>\n\u4e3b\u7c7b\u5df2\u7ecf\u7ed9\u51fa，\u8bf7\u7ed3\u5408\u4e3b\u7c7b\u5b8c\u6210\u4e0a\u9762\u7c7b\u7684\u7f16\u5199<\/p>\n
\u88c1\u5224\u6d4b\u8bd5\u7a0b\u5e8f\u4e3b\u7c7b：<\/p>\n
public class Main {<\/p>\n
public static void main(String[] args) {
\n IGeometry [] tuxing=new IGeometry[29]; \/\/\u670929\u4e2aGeometry\u5bf9\u8c61
\n for(int i=0;i<tuxing.length;i++) { \/\/29\u4e2aGeometry\u5bf9\u8c61\u5206\u6210\u4e24\u7c7b
\n if(i%2==0)
\n tuxing[i]=new Rect(16+i,68);
\n else if(i%2==1)
\n tuxing[i]=new Circle(10+i);
\n }
\n TotalArea computer=new TotalArea();
\n computer.setTuxing(tuxing);
\n System.out.printf("\u5404\u79cd\u56fe\u5f62\u7684\u9762\u79ef\u4e4b\u548c:\\\\n%.2f",computer.computerTotalArea());<\/p>\n}
\n}<\/p>\n\/* \u8bf7\u5728\u8fd9\u91cc\u586b\u5199\u7b54\u6848 \u8bf7\u7ed3\u5408\u4e3b\u7c7b\u4ee3\u7801，\u5728\u4ee3\u7801\u6846\u5b8c\u6210IGeometry\u63a5\u53e3\u7c7b，Rect\u7c7b，Circle\u7c7b\u548cTotalArea\u7c7b*\/<\/p>\n
\u8f93\u5165\u6837\u4f8b：<\/p>\n
\u5728\u8fd9\u91cc\u7ed9\u51fa\u4e00\u7ec4\u8f93\u5165\u3002\u4f8b\u5982：<\/p>\n
\u65e0<\/p>\n
\u8f93\u51fa\u6837\u4f8b：<\/p>\n
\u5728\u8fd9\u91cc\u7ed9\u51fa\u76f8\u5e94\u7684\u8f93\u51fa\u3002\u4f8b\u5982：<\/p>\n
\u5404\u79cd\u56fe\u5f62\u7684\u9762\u79ef\u4e4b\u548c:
\n58778.36<\/p>\n\u5b9e\u73b0\u4ee3\u7801：<\/h3>\n
interface IGeometry {
\npublic double getArea();
\n}
\nclass Rect implements IGeometry {
\npublic double a;
\npublic double b;
\npublic Rect(double a, double b) {
\nsuper();
\nthis.a = a;
\nthis.b = b;
\n}
\npublic double getArea() {
\nreturn a * b;
\n}
\n}
\nclass Circle implements IGeometry {
\npublic double r;
\npublic Circle(double r) {
\nsuper();
\nthis.r = r;
\n}
\npublic double getArea() {
\nreturn r * r * 3.14;
\n}
\n}
\nclass TotalArea {
\npublic IGeometry[] tuxing;
\npublic void setTuxing(IGeometry[] t) {
\nthis.tuxing = t;
\n}
\npublic double computerTotalArea() {
\ndouble sum = 0.0;
\nfor (IGeometry i : tuxing) {
\nsum += i.getArea();
\n}
\nreturn sum;
\n}
\n}<\/p>\n","protected":false},"excerpt":{"rendered":"6-10 \u8bbe\u8ba1\u4e00\u4e2aTriangle\u7c7b\u7ee7\u627f\u81eaGeometricObject\u7c7b\u8bbe\u8ba1\u4e00\u4e2a\u540d\u4e3aTriangle\u7684\u7c7b\u6765\u6269\u5c55GeometricObject\u7c7b\u3002\u8be5\u7c7b\u5305\u62ec：\u25a0 \u4e09\u4e2a\u540d\u4e3aside1\u3001side2\u548cside3\u7684double\u6570\u636e\u57df\u8868\u793a\u8fd9\u4e2a\u4e09\u89d2\u5f62\u7684\u4e09\u6761\u8fb9，\u5b83\u4eec\u7684\u9ed8\u8ba4\u503c\u662f1.0\u3002\u25a0 \u4e00\u4e2a\u65e0\u53c2\u6784\u9020\u65b9\u6cd5\u521b\u5efa\u9ed8\u8ba4\u7684\u4e09\u89d2\u5f62\u3002\u25a0 \u4e00\u4e2a\u80fd\u521b\u5efa\u5e26\u5236\u5b9aside1\u3001side2\u548cside3\u7684\u4e09\u89d2\u5f62\u7684\u6784\u9020\u65b9\u6cd5\u3002\u25a0 \u6240\u6709\u4e09\u4e2a\u6570\u636e\u57df\u7684\u8bbf\u95ee\u5668\u65b9\u6cd5\u3002\u25a0 \u4e00\u4e2a\u540d\u4e3agetArea()\u7684\u65b9\u6cd5\u8fd4\u56de<\/p>\n","protected":false},"author":2,"featured_media":69663,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[7328,7330,7329,99,190,427,5366],"topic":[],"class_list":["post-69664","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-server","tag-7328","tag-7330","tag-7329","tag-java","tag-190","tag-427","tag-5366"],"yoast_head":"\n
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