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Java类

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Java类基础实验

1、将你在实验3中设计的模拟堆栈程序，封装成一个类（注意访问控制的运用、getter和setter的运用、构造方法的设计等），并用这个堆栈类重写中缀表达式转换成后缀表达式程序。

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public class StackImiate { 
		private int maxSize;
		private char[] a;
		private int top;
		StackImiate(int maxSize) {
			this.maxSize=maxSize;
			a=new char[maxSize];
			top=-1;
		}
		public void push(char str) {
			a[++top]=str;
		}	
		public char pop() {
			return a[top--];
		}
		public boolean isEmpty() {
			return(top==-1);
		}
		public boolean isFull() {
			return(top==maxSize);
		}
		public int length() 
		   {return top+1;}
		public char peek() {
			return a[top];
		}
		public char peekN(int n) {
			//System.out.println(a[n]);
			return a[n];
		}
		public void displayStack(String s) {
			System.out.print(s);
			System.out.print(" Stack (bottom-->top): ");
			for(int j=0;j<maxSize;j++) {
				System.out.print(peekN(j)+" ");
			}
			System.out.println();
	}
}
public class InToPost {		
	public static void main(String[] args) {
		String strResult=new String();
		String  Input="a+b*c+(d*e+f)*g";
		System.out.println("中缀表达式"+Input);
		strResult=strResult+doTrans(Input);
		System.out.println();
		
		System.out.println("后缀表达式"+strResult);
	}
			public static StringBuffer doTrans(String  Input) {
				StackImiate  str=new StackImiate(50);
				StringBuffer strResultTemp=new StringBuffer();
				for (int i = 0; i <Input.length(); i++) {
					char ch = Input.charAt(i);
					str.displayStack("Get " + ch + " ");
					switch (ch) {
					case '+':
					case '-':
						gotOper(ch, 1,str,strResultTemp);				
						break;
					case '*':
					case '/':
					case '%':
						gotOper(ch, 2,str,strResultTemp);				
						break;
					case '(':					
						str.push(ch);
						break;
					case ')':
						gotParen(ch,str,strResultTemp);				
						break;
					default:					
						strResultTemp =strResultTemp.append(ch);
						break;
					}
				}
				while (!str.isEmpty()) {
					str.displayStack("out ");
					strResultTemp = strResultTemp.append(str.pop());
				}
				str.displayStack("End  ");				
				return strResultTemp;						
			}
			public static void gotParen(char ch,StackImiate  str,StringBuffer strResultTemp) {
				// TODO Auto-generated method stub
				while (!str.isEmpty()) {
					char chx = (char) str.pop();		
					if (chx == '(') {
						break;
					} else {
						strResultTemp =strResultTemp.append(chx);			
					}
				}
			}
			private static void gotOper(char ch, int i,StackImiate  str,StringBuffer strResultTemp) {
				// TODO Auto-generated method stub
				while (!str.isEmpty()) {		
					char opTop = (char) str.pop();
					if (opTop == '(') {		
						str.push('(');
						break;
					} else {
						int k;
						if (opTop == '+' || opTop == '-') {
							k = 1;
						} else {
							k = 2;
						}
						if (k < i) {		
							str.push(opTop);
							break;
						} else {
							strResultTemp = strResultTemp.append(opTop);	
						}
					}
				}
				str.push(ch);				
			}
		 
}

在这里插入图片描述

2、设计一个时间类MyDate：（日期均大于1900年）

a、其中包括年、月、日、时、分、秒。其他成员变量可根据需要增设；
b、可以直接获得时间的年、月、日、小时、分钟、秒数；(public修饰)
c、计算日期的dayOfWeek（星期几）；
d、输入任意一个月份，将此月的日历输出（按星期格式）；
e、输入任意年份，将此年的年历输出；
f、输出时间，要求三种格式：
yyyy年MM月dd日hh小时mm分ss秒；（Chinese）
yyyy-MM-dd hh:mm:ss（European）
yyyyMMddhhmmss（compact）
g、设计三个构造方法：
1、参数只有年月日的构造方法，小时分钟秒设为0；
2、完全参数的构造方法；
3、如果使用无参数的构造方法则初始化为系统时间。
h、不要直接使用Java提供的Date类，那样就达不到练习的效果了。

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import java.text.SimpleDateFormat;
public class MyDate {
		public int year,month,day,hour,minute,second;
		String strDate;
	public MyDate()
		{SimpleDateFormat myDateFormat =new SimpleDateFormat("yyyyMMddHHmmss");
		 java.util.Date  date0=new java.util.Date();
		 strDate=myDateFormat.format(date0);
		 year = Integer.parseInt( strDate.substring(0,4));
		month = Integer.parseInt( strDate.substring(4,6));
		day = Integer.parseInt( strDate.substring(6,8));
		hour = Integer.parseInt( strDate.substring(8,10));
		minute = Integer.parseInt( strDate.substring(10,12));
		second = Integer.parseInt( strDate.substring(12,14));
		}
	public  MyDate(int year0,int month0,int day0)
		{year=year0;
		 month=month0;
		 day=day0;
		 hour=0;
		 minute=0;
		 second=0;}
	public  MyDate(int year0,int month0,int day0,int hour0,int minite0,int second0)
	 	{year=year0;
	 	 month=month0;
	 	 day=day0;
	 	 hour=hour0;
	 	 minute=minite0;
	 	 second=second0;}
		public int getYear()
      		{return year;}
		public int getMonth()
			{return month;}
		public String getDate()
			{return day+"/"+month+"/"+year;}
		public int getHour()
			{return hour;}
		public int getMinite()
			{return minute;}
		public int getSecond()
			{return second;}
		public void displayChinese()
			{System.out.println(year+"年"+month+"月"+day+"日"+hour+"时"+minute+"分"+second+"秒");}
		public void displayEU()
			{System.out.println(year+"-"+month+"-"+day+" "+hour+":"+minute+":"+second+" ");}
		public void displayCompact()
			{System.out.println(year+" "+month+" "+day+" "+hour+" "+minute+" "+second);}
		
		public void displayMonth(int year,int month)								//输出一月的日历
			{	int sum=0;
				for(int i=1900;i<year;i++)
					{	if(i%4==0&&i%100!=0||i%400==0)
							{sum+=366;}
						else
							{sum+=365;}
					}	
					for(int i=1;i<month;i++)
						{	if(i==2)
							{if(year%4==0&&year%100!=0||year%400==0)
								{sum+=29;}
							 else
							 	{sum+=28;}
							}
							else
							{	if(i==4||i==6||i==9||i==11)
								 {sum+=30;}
								else
								 {sum+=31;}
							}
						}	
					sum+=1;
					int wekday=sum%7;
					System.out.println("日\t一\t二\t三\t四\t五\t六");
					for(int i=1;i<=wekday;i++)
						{System.out.print("\t");}
				if(year%4==0&&year%100!=0||year%400==0)
					{if(month!=2)
						{if(month==4||month==6||month==9||month==11)
						{for(int i=1;i<=30;i++)
						 {if(sum%7==6)
						 		{System.out.print(i+"\n");}
						 	else{
						 		System.out.print(i+"\t");}
						 	sum++;}}
						else
						{for(int i=1;i<=31;i++)
						 	{if(sum%7==6)
						 		{System.out.print(i+"\n");}
						 	else
						 	{System.out.print(i+"\t");}
						 	sum++;}
						}}
					else
					{for(int i=1;i<=29;i++)
				 		{if(sum%7==6)
				 		{System.out.print(i+"\n");}
				 		else
				 		{System.out.print(i+"\t");}
				 		sum++;
					}}}
				else {if(month!=2)
				{if(month==4||month==6||month==9||month==11)
				{for(int i=1;i<=30;i++)
				 {if(sum%7==6)
				 		{System.out.print(i+"\n");}
				 	else{
				 		System.out.print(i+"\t");}
				 	sum++;}}
				else
				{for(int i=1;i<=31;i++)
				 	{if(sum%7==6)
				 		{System.out.print(i+"\n");}
				 	else
				 	{System.out.print(i+"\t");}
				 	sum++;}
				}}
			else
			{for(int i=1;i<=28;i++)
		 		{if(sum%7==6)
		 		{System.out.print(i+"\n");}
		 		else
		 		{System.out.print(i+"\t");}
		 		sum++;
			}}}}
		public void displayYear(int year)									//输出一年的日历
			{for(int i=1;i<13;i++)
				{System.out.println("         		第"+i+"月");
				displayMonth(year,i);
				System.out.println();
				}
			}
		public String dayOfWeek(int year,int month,int day)					//判断某天为一周的星期几
			{int sum=0;
			 for(int i=1900;i<year;i++)
			 	{	if(i%4==0&&i%100!=0||i%400==0)
					 {sum+=366;}
			 		else
					 {sum+=365;}
			 	}
			 for(int i=1;i<month;i++)
			 	{	if(i==2)
			 		{
			 			if(year%4==0&&year%100!=0||year%400==0)
			 				{sum+=29;}
			 			else
			 				{sum+=28;}
			 		}
			 		else
			 		{	if(i==4||i==6||i==9||i==11)
							{sum+=30;}
			 			else
			 				{sum+=31;}
			 		}
			 	}
			 sum+=1;
			 int wekFirstday=sum%7;
			 int dayOfWeek=wekFirstday;
			 int i=0;
			 while(i<day)
			 	{i++;dayOfWeek++;}
			 if(dayOfWeek!=7)
			 	{return "第"+year+"年"+month+"月"+day+"日为星期"+dayOfWeek;}
			 else
			 	{return "第"+year+"年"+month+"月"+day+"日为星期日";}
		}}
public class UseMyDate {
	public static void main(String[] args) {
			MyDate myDate=new MyDate();
			myDate.displayChinese();
			myDate.displayEU();
			myDate.displayCompact();
			MyDate myDate1=new MyDate(2008,8,8);
			myDate1.displayChinese();
			myDate1.displayEU();
			myDate1.displayCompact();
			MyDate myDate2=new MyDate(2008,8,8,20,0,0);
			myDate2.displayChinese();
			myDate2.displayEU();
			myDate2.displayCompact();
			myDate.displayMonth(2014,4);
			System.out.println();
			myDate.displayYear(2011);	}
}

在这里插入图片描述
在这里插入图片描述

3、设计一个字符串链表节点类：

a)其中包括两个成员变量：Value（String类型）和下一个节点nextNode，方法有：setValue()，getValue()和display();
b)用此类生成一个循环链表来解决斗地主发牌的问题

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public class ChainNode {
		public String Value;
		public ChainNode nextNode;
		public String suit;
		public ChainNode()
			{Value="";
			 nextNode=null;
			 suit="";}
		public ChainNode(String Value,ChainNode nextNode, String suit)
		{this.Value=Value;
		this.nextNode=nextNode;
		this.suit=suit;}
		public ChainNode(String Value, String suit)
		{this.Value=Value;
		this.suit=suit;}
		public void setValue(String suit,String value)
			{this.Value=value;
			this.suit=suit;}
		public String getValue()
			{return Value;}
		public void display()
			{System.out.print(suit+Value+"  ");}
}
public class DealCards {
	public static void main(String[] args) {
		String suits[]=new String[] {"黑桃","梅花","方块","红桃"};
		String Value[]=new String[] {"A","2","3","4","5","6","7","8","9","10","J","Q","K",};
		ChainNode[] cardsOfPlayer = new ChainNode[3];
		for(int i = 0; i<3; i++)
		{
			cardsOfPlayer[i] = new ChainNode();
		}
		ChainNode firstCard=new ChainNode("","大王");
		firstCard.nextNode=new ChainNode("","小王");
		ChainNode lastCard=firstCard.nextNode;
		for(int i=0;i<4;i++)
		{	for(int j=0;j<13;j++)
			{lastCard.nextNode= new ChainNode(Value[j],suits[i]);
			 lastCard=lastCard.nextNode;
			}
		}
		lastCard.nextNode=firstCard;
		int random=0;
		int players=0;
		ChainNode choose=firstCard;
		ChainNode before=lastCard;
		for(int num=54;num>3;num--)
			{	random=(int)(Math.random()*num);
				for(;random>1;random--)
				{before=choose;
				choose=choose.nextNode;}
				before.nextNode=choose.nextNode;
				choose.nextNode=cardsOfPlayer[players].nextNode;
				cardsOfPlayer[players].nextNode=choose;
				choose=before.nextNode;
				players++;
				players=players%3;
			}
		for(int i = 0; i<3; i++)
		{
			System.out.println("\n第"+(i+1)+"个玩家的牌是");
			ChainNode pri = cardsOfPlayer[i].nextNode;
			while(pri != null)
			{
				pri.display();
				pri = pri.nextNode;
			}
		}
		System.out.println("\nThe Last Three Cards：");
		for(int i = 0; i<3; i++)
		{
			choose.display();
			choose = choose.nextNode;
		}
		System.out.println();
		System.out.println();
		
	}
}

在这里插入图片描述

4、设计一个用于管理银行客户的类BankCustomer：

仅描述客户的几个重要方面：帐号、身份证号、姓名、联系方式、密码、账户余额。所有的成员变量均用private访问控制，因此每一个成员变量就要有相应的存取器（getter和setter，即获取和设置其值的相应的成员方法。需要setter还是getter，还是两者都要，视情况而定）

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import java.text.SimpleDateFormat;

public class BankCustomer {
		private String ID;
		private String peopleID;
		private String name;
		private String phone;
		private String password;
		private double balance;
		public BankCustomer(String peopleID,String name,String phone)
		{String strDate;
		 SimpleDateFormat myDateFormat =new SimpleDateFormat("yyyyMMddHHmmss");
		 java.util.Date  date0=new java.util.Date();
		 strDate=myDateFormat.format(date0);
		 ID=strDate;
		 this.peopleID=peopleID;
		 this.name=name;
		 this.phone=phone;
		 this.password="666666";
		 this.balance=0;
		}
		public double getbalance()
		{return balance;}
		public String getID()
		{return ID;}
		public String getPhone()
		{return phone;}
		public String getPelpleID()
		{return peopleID;}
		public String getName()
		{return name;}
		public void setName(String password,String name)
		{if(ifPassword(password))
			{this.name=name;
			System.out.println("您的姓名已设置");}
		else
			{System.out.println("密码错误");}
		}
		public void setPeopleID(String password,String peopleID)
		{if(ifPassword(password))
			{this.peopleID=peopleID;
			System.out.println("您的身份证号已设置");}
		 else
			{System.out.println("密码错误");}}
		public void setPhone(String password,String phone)
		{if(ifPassword(password))
			{this.phone=phone;
			System.out.println("您的电话已设置");}
		else
			{System.out.println("密码错误");}
		}
		public boolean ifPassword(String password)//判断密码是否正确
		{if(this.password==password)
			return true;
		else return false;
		}
		public void  deposit(String password,double money)
			{	if(ifPassword(password))
					{balance+=money;
					 System.out.println("您的账户已充值"+balance+"元，您的余额为"+balance);}
				else
					{System.out.println("密码错误");}
			}
		public void withdraw(String password,double money)
			{if(ifPassword(password))
				{if(balance>money)
					{balance-=money;
				 System.out.println("您的账户已取出"+balance+"元，您的余额为"+balance);}
				else
					{System.out.println("您的余额为不足");}}
			 else
			 	{System.out.println("密码错误");}
			}
		public void displayCustomer(String password)
			{if(ifPassword(password))
				{System.out.println("  您的身份证为"+peopleID);
				System.out.println("  您的余额为"+balance);
				System.out.println("  您的账号为"+ID);
				System.out.println("  您的姓名为"+name);
				System.out.println("  您的电话为"+phone);
				}
			else
		 	{System.out.println("密码错误");}
			}
		public void changePassWord(String oldPassword,String newPassword1,String newPassword2)
			{if(ifPassword(oldPassword))
			 {if( newPassword1== newPassword2)
			 {if(newPassword1.length()>5)
				{this.password=newPassword1;
				 System.out.println("已修改密码");}
			 else
			 {System.out.println("你输入的密码不到6位，请重新输入");}}
			 else
			 	{System.out.println("你输入的两次密码不一样，请重新输入");}
			 }
			 else
			 	{System.out.println("密码错误");}
			}
}
package text4;

public class Customer {
	public static void main(String[] args) {
		BankCustomer myCard=new BankCustomer("430725000000000000","罗琪源","000000000000");
		myCard.setName("666666","");
		myCard.setName("567891","");
		myCard.setPeopleID("666666","430725200112190032");
		myCard.setPeopleID("567891","430725200112190032");
		myCard.setPhone("666666","18569126258");
		myCard.setPhone("567891","18569126258");
		myCard.getbalance();
		myCard.getID();
		myCard.getPhone();
		myCard.getPelpleID();
		myCard.getName();
		myCard.deposit("666666", 5000);
		myCard.deposit("567891", 5000);//deposit money
		myCard.withdraw("666666",10000);
		myCard.withdraw("567891",10000);
		myCard.withdraw("567891",5000);//withdraw money
		myCard.displayCustomer("666666");
		myCard.displayCustomer("567891");//displayCustomer
		myCard.changePassWord("666666", "567891", "567891");
		myCard.changePassWord("888888", "567891", "567891");
		myCard.changePassWord("567891", "567891", "666666");//change password situations
		myCard.deposit("666666", 5000);
		myCard.deposit("567891", 5000);//when change password deposit money
		myCard.withdraw("666666",10000);
		myCard.withdraw("567891",10000);
		myCard.withdraw("567891",5000);//when change password withdraw money
		myCard.displayCustomer("666666");
		myCard.displayCustomer("567891");//when change password displayCustomer
		myCard.getbalance();
		myCard.getID();
		myCard.getPhone();
		myCard.getPelpleID();
		myCard.getName();
		myCard.setName("666666","");
		myCard.setName("567891","");
		myCard.setPeopleID("666666","430725200112190032");
		myCard.setPeopleID("567891","430725200112190032");
		myCard.setPhone("666666","18569126258");
		myCard.setPhone("567891","18569126258");
		}

}
-------------本文结束感谢您的阅读-------------