1. 3、 用java定义一个股票类Stock,该类包括如右图所示
public
class
stock
{
private
string
store;//
股票类属性
private
string
symbol;//
股票代号
private
string
name;//
股票名称
private
bigdecimal
currentprice;//
当前时间的股票价格
private
bigdecimal
previouclosingprice;//
前一天的股票值
/**
*
返回前一天变到当前时间的百分比
*
@return
百分比
*/
public
double
getchangepercent()
{
return
this.currentprice.subtract(this.previouclosingprice).abs()
.divide(this.currentprice,
2,
bigdecimal.round_half_even)
.doublevalue();
}
/**
*
返回前一天变到当前时间的百分比
*
@param
currentprice
当前时间的股票价格
*
@param
previouclosingprice
前一天的股票值
*
@return
百分比
*/
public
double
getchangepercent(bigdecimal
currentprice,
bigdecimal
previouclosingprice)
{
return
currentprice.subtract(previouclosingprice).abs()
.divide(currentprice,
2,
bigdecimal.round_half_even)
.doublevalue();
}
public
string
getstore()
{
return
store;
}
public
void
setstore(string
store)
{
this.store
=
store;
}
public
string
getsymbol()
{
return
symbol;
}
public
void
setsymbol(string
symbol)
{
this.symbol
=
symbol;
}
public
string
getname()
{
return
name;
}
public
void
setname(string
name)
{
this.name
=
name;
}
public
bigdecimal
getcurrentprice()
{
return
currentprice;
}
public
void
setcurrentprice(bigdecimal
currentprice)
{
this.currentprice
=
currentprice;
}
public
bigdecimal
getpreviouclosingprice()
{
return
previouclosingprice;
}
public
void
setpreviouclosingprice(bigdecimal
previouclosingprice)
{
this.previouclosingprice
=
previouclosingprice;
}
}
2. java 设计一个Stock的类,这个类包括:
代码如下:
import java.math.BigDecimal;import java.math.RoundingMode;public class Stock { private String symbol; private String name; private double previousClosingPrice; private double currentPrice; // 构造方法 public Stock(String symbol, String name) { this.symbol = symbol; this.name = name; } // public double getChangePercent() { return (currentPrice - previousClosingPrice) / previousClosingPrice; } public void setPreviousClosingPrice(double previousClosingPrice) { this.previousClosingPrice = previousClosingPrice; } public void setCurrentPrice(double currentPrice) { this.currentPrice = currentPrice; } public String getSymbol() { return symbol; } public String getName() { return name; } public static void main(String[] args) { Stock stock = new Stock("Java", "Sun Mircro"); stock.setCurrentPrice(4.35); // 当前价格 stock.setPreviousClosingPrice(4.5);// 前一交易日价格 double d = stock.getChangePercent(); // 价格浮动: 由于是double,下面的计算是N位小数 System.out.println("价格浮动:" + stock.getChangePercent()); // 处理下 BigDecimal bd = new BigDecimal(d * 100); // 乘个100,是为了看效果 bd = bd.setScale(2, RoundingMode.HALF_UP); // 设置2位小数,采用四舍五入 System.out.println("[" + stock.getSymbol() + "] " + stock.getName() + " 价格浮动:" + bd.toString() + "%"); }}亲,如果回答满意,亲及时采纳,你的合作是我们回答的动力,谢谢!
3. 定义一个股票类Stock
定义股票的类:
在类模块中输入下列代码。
public symbol as string
public name as string
public currenprice as currency
public sub 显示股票信息()
msgbox(symbol & vbcrlf & name & currency)
end sub
打印图案
private sub print()
dim x as string
dim y as integer
dim z as integer
x=""
for i=0 to 2
y=2-i
z=1+i*2
for j=1 to y
x=x & " "
nex j
for j=1 to z
x=x & "#"
next j
x=x & vbcrlf
next i
msgbox(x)
end sub
没有看到第8题,第7题与股票的问题类似。
本例是用VB答复的,其他语言基本类似。
原来是要Java的:
public class Stock {
private String symbol;
private String name;
private double currentPrice;
public Stock(){
}
public void display(){
System.out.println("(" + this.symbol + ")" + this.name + ":" + this.currentPrice);
}
public String getSymbol() {
return symbol;
}
public void setSymbol(String symbol) {
this.symbol = symbol;
}
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
public double getCurrentPrice() {
return currentPrice;
}
public void setCurrentPrice(double currentPrice) {
this.currentPrice = currentPrice;
}
}
4. 用c++ 定义一个类Stock,记录一支股票交易的基本信息。
你是不愿意写代码吧,这个不难啊,基本学过类的都会
定义类Stock,里面有上述的私有成员变量,以及各个成员变量的公有set 和 get方法
再在main函数中创建连个变量
Stock todayStock;
Stock yesterdayStock;
再分别调用set函数,然后再计算涨幅、输出,很简单啊
5. c++程序设计题:定义一个股票类(stock)对象数组,存放连续5个交易日的股票信息,计算股票涨幅。
#include using namespace std;int main(){ double stock[5]; // 定义长度为5的数组存放用户输入的股票价格 for(int i = 0;i > stock[i]; } // 循环读入用户输入的股价 double percent = (stock[4] - stock[0]) * 100; cout << "涨幅:" << percent << "%" << endl; return 0;}
6. 要求编写类与main方法 1. 编写一个类Stock表示股票,成员变量有: string型symbol,表示股票代码. String型na
public symbol as string
public name as string
public currenprice as currency
public sub 显示股票信息()
msgbox(symbol & vbcrlf & name & currency)
end sub
打印图案
private sub print()
dim x as string
dim y as integer
dim z as integer
x=""
for i=0 to 2
y=2-i
z=1+i*2
for j=1 to y
x=x & " "
nex j
for j=1 to z
x=x & "#"
next j
x=x & vbcrlf
next i
msgbox(x)
end sub
没有看到第8题,第7题与股票的问题类似。
本例是用VB答复的,其他语言基本类似。
原来是要Java的:
public class Stock {
private String symbol;
private String name;
private double currentPrice;
public Stock(){
}
public void display(){
System.out.println("(" + this.symbol + ")" + this.name + ":" + this.currentPrice);
}
public String getSymbol() {
return symbol;
}
public void setSymbol(String symbol) {
this.symbol = symbol;
}
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
public double getCurrentPrice() {
return currentPrice;
}
public void setCurrentPrice(double currentPrice) {
this.currentPrice = currentPrice;
}
}
7. 编写一个类Stock表示股票,成员变量有: string型symbol,表示股票代码. String型name,表示股票名称. double
private String symbol;//string型symbol,表示股票代码.
private String name;//String型name,表示股票名称.
private double previousClosingPrice;//double型previousClosingPrice,表示上期收盘价
private double currentPrice;//double型currentPrice,表示当前价格.
//下列为Set和get方法
public String getSymbol() {
return symbol;
}
public void setSymbol(String symbol) {
this.symbol = symbol;
}
public String getName() {
return name;
}
public void setNameString(String nameString) {
this.name = nameString;
}
public double getPreviousClosingPrice() {
return previousClosingPrice;
}
public void setPreviousClosingPrice(double previousClosingPrice) {
this.previousClosingPrice = previousClosingPrice;
}
public double getCurrentPrice() {
return currentPrice;
}
public void setCurrentPrice(double currentPrice) {
this.currentPrice = currentPrice;
}
//Stock(String symbol,String name),用来创建股票对象
Stock(String symbol,String name,double previousClosingPrice,double currentPrice) {
this.symbol = symbol;
this.name = name;
this.previousClosingPrice = previousClosingPrice;
this.currentPrice = currentPrice;
}
double changePercent(){
return (currentPrice - previousClosingPrice) /previousClosingPrice;
}
public static void main(String[] args){
Stock stock = new Stock("IBM", "Intermational Business Manufacture Inc",176 , 153);
System.out.println(stock.name+"股票本月同比上月上涨"+stock.changePercent()+"个百分点!");
}
我也是学生啊 可以进行技术交流哦 希望这能帮助到你....
8. java数组自定义的问题
public class Stock
{
public static void main(String[] args)
{
Stock s=new Stock("ORCL","Oracle Corporation ",34.5);
s.setCurrentPrice(34.35);
System.out.println(s.getChangePercent() );
}
Stock(String symbol,String name,double previousClosingPrice)
{
this.symbol=symbol;
this.name=name;
this.previousClosingPrice=previousClosingPrice;
}
String getChangePercent()
{
String s="%";
double t=((currentPrice-previousClosingPrice)/previousClosingPrice);
if(t<0)
{
s="-%";
t=-t;
}
return s+t*100;
}
void setCurrentPrice(double currentPrice)
{
this.currentPrice=currentPrice;
}
private String symbol,name;
private double previousClosingPrice,currentPrice;
}