Java 编程存储数量并写入else if语句以显示正确的数量
最后的程序将显示最终估算报告。如果用户只要求一个表，输出将显示最终的总估算值，该表为单数。如果用户要求多个表，输出将显示表的数量和总成本。如果用户根本没有请求任何估算，程序应该显示一条消息，说明这一点 它只显示“您没有估计任何表…”Java 编程存储数量并写入else if语句以显示正确的数量,java,Java,最后的程序将显示最终估算报告。如果用户只要求一个表，输出将显示最终的总估算值，该表为单数。如果用户要求多个表，输出将显示表的数量和总成本。如果用户根本没有请求任何估算，程序应该显示一条消息，说明这一点 它只显示“您没有估计任何表…” 公共类表{ 公共静态void main（字符串[]args）{ 弦材料； 国际选择； 国际选择； int numTable=0； 双重成本； 双倍合计=0； 双格子=0.125； 双pOak=0.25； 扫描仪输入=新扫描仪（System.in）； System.o
公共类表{
公共静态void main（字符串[]args）{
弦材料；
国际选择；
国际选择；
int numTable=0；
双重成本；
双倍合计=0；
双格子=0.125；
双pOak=0.25；
扫描仪输入=新扫描仪（System.in）；
System.out.println（“欢迎来到Tables is Us-您的一站式餐桌店”）；
System.out.println（“Mike-mastertablebuilder”）；
布尔bFlag=true；
while（bFlag）{
双面积=0；
双倍长度=-1；
双宽度=-1；
双直径=-1；
双半径=-1；
做{
System.out.println（“\n\n您希望构建什么形状的表？”）；
System.out.println（“\t1.矩形”）；
System.out.println（“\t2.Sqaure”）；
System.out.println（“\t3.Circular”）；
System.out.println（“\t4.End程序”）；
系统输出打印（“输入菜单项：”）；
tChoice=input.nextInt（）；
如果（t选择<1 | | t选择>4）{
System.out.println（“错误-无效输入。请重新输入有效值”）；
}
}而（t选择<1 | | t选择>4）；
如果（tChoice==1）{
while（长度<0）{
System.out.print（“输入表格的长度（以英寸为单位）：”；
长度=输入.nextDouble（）；
如果（长度<0）{
System.out.println（“错误-长度必须大于零。请重新输入！！”；
}
}
而（宽度<0）{
System.out.print（“输入表格的宽度（以英寸为单位）：”；
宽度=输入.nextDouble（）；
如果（宽度<0）{
System.out.println（“错误-宽度必须大于零。请重新输入！！”；
}
}
面积=长度*宽度；
}else if（tChoice==2）{
while（长度<0）{
System.out.print（“输入表格的长度（以英寸为单位）：”；
长度=输入.nextDouble（）；
如果（长度<0）{
System.out.println（“错误-长度必须大于零。请重新输入！！”；
}
}
面积=长度*长度；
}否则如果（t选择==3）{
而（直径<0）{
系统输出打印（“输入表格直径（英寸）：”；
直径=输入.nextDouble（）；
如果（直径<0）{
System.out.println（“错误-直径必须大于零。请重新输入！！”；
}
}
半径=直径/2；
面积=Math.PI*半径*半径；
}else if（tChoice==4）{
如果（numTable==0）{
System.out.println（“\n您今天没有估计任何表！”）；
}否则{
System.out.printf（“您估计的“+numTable+”表的总成本为$”+String.format（“%.2f”，total））；
}
System.out.println（“感谢您使用表成本估算程序！”）；
System.out.println（“再见！！！”；
input.close（）；
返回；
}
做{
System.out.println（“\n要使用哪种类型的材质？”）；
System.out.println（“\t1.层压板（$0.125/平方英寸）”）；
System.out.println（“\t2.橡木（每平方英寸0.25美元）”；
系统输出打印（“输入菜单项：”）；
mChoice=input.nextInt（）；
如果（mChoice<1 | | mChoice>2）{
System.out.println（“错误-无效输入。请重新输入有效值”）；
}
}而（mChoice<1 | | mChoice>2）；
如果（mChoice==1）{
材料=“层压板”；
表成本=面积*平面；
}否则{
材料=“橡木”；
表成本=面积*pOak；
}
System.out.println（“\n输出报告：”）；
System.out.printf（“表格的面积为“+String.format”（%.2f），面积）+“平方英寸”）；
System.out.printf（“\n表格将由”+材料组成）；
System.out.printf（“\n表的成本为$”+String.format（“%.2f”，tableCost））；
总计=总计+表成本；
总计++；
}
input.close（）；
}
}
%n确保设置了
numTabletChoicenumTablepublic class Table {
public static void main(String[] args) {
System.out.println("Welcome to Tables are Us - Your One Stop Table Shop");
System.out.println("Mike - Master Table Builder");
int totalTables = 0;
double totalTableCost = 0;
Scanner scan = new Scanner(System.in);
scan.useLocale(Locale.ENGLISH);
while (true) {
int shapeMenuItem = getShapeMenuItem(scan);
if (shapeMenuItem == 4) {
printFinalResults(totalTables, totalTableCost);
return;
}
double area = getArea(scan, shapeMenuItem);
if (Double.isNaN(area))
System.err.println("Error - Invalid Entry. Please reenter a valid value.");
else {
int materialMenuItem = getMaterialMenuItem(scan);
double tableCost = area * getMaterialCost(materialMenuItem);
totalTableCost += tableCost;
totalTables++;
printReport(area, tableCost, materialMenuItem);
}
}
}
private static void printFinalResults(int numTable, double total) {
if (numTable == 0)
System.out.println("You did not estimate any tables today!");
else
System.out.format(Locale.ENGLISH, "\nThe total cost of the %d tables you estimated is $%.2f\n", numTable, total);
System.out.println("Thank you for using the table cost estimation program!");
System.out.println("GoodBye!!!");
}
private static void printReport(double area, double tableCost, int materialMenuItem) {
System.out.println("\nOutput Report:");
System.out.format(Locale.ENGLISH, "The area of table is %.2f square inches\n", area);
System.out.println("The table will be made of " + getMaterialName(materialMenuItem));
System.out.printf(Locale.ENGLISH, "The cost of the table is $%.2f\n", tableCost);
}
private static int getShapeMenuItem(Scanner scan) {
System.out.println("\n\nWhat shape of table do you wish to build?");
System.out.println("\t1. Rectangle");
System.out.println("\t2. Square");
System.out.println("\t3. Circle");
System.out.println("\t4. End Program");
System.out.print("Enter menu entry: ");
return scan.nextInt();
}
private static int getMaterialMenuItem(Scanner scan) {
while (true) {
System.out.println("\nWhat type of material do you want to use?");
System.out.println("\t1. Laminate ($0.125 per square inch)");
System.out.println("\t2. Oak ($0.25 per square inch)");
System.out.print("Enter menu entry: ");
int menu = scan.nextInt();
if (menu == 1 || menu == 2)
return menu;
System.err.println("Error - Invalid Entry. Please reenter a valid value.");
}
}
private static double getArea(Scanner scan, int shapeMenuItem) {
if (shapeMenuItem == 1)
return getRectangleArea(scan);
if (shapeMenuItem == 2)
return getSquareArea(scan);
if (shapeMenuItem == 3)
return getCircleArea(scan);
return Double.NaN;
}
private static double getRectangleArea(Scanner scan) {
double length = readDouble(scan, "Enter the length of the table (in inches): ");
double width = readDouble(scan, "Enter the width of the table (in inches): ");
return length * width;
}
private static double getSquareArea(Scanner scan) {
double length = readDouble(scan, "Enter the length of the table (in inches): ");
return length * length;
}
private static double getCircleArea(Scanner scan) {
double diameter = readDouble(scan, "Enter the diameter of the table (in inches): ");
double radius = diameter / 2;
return Math.PI * radius * radius;
}
private static String getMaterialName(int materialMenuItem) {
if (materialMenuItem == 1)
return "Laminate";
if (materialMenuItem == 2)
return "Oak";
return null;
}
private static double getMaterialCost(int materialMenuItem) {
if (materialMenuItem == 1)
return 0.125;
if (materialMenuItem == 2)
return 0.25;
return Double.NaN;
}
private static double readDouble(Scanner scan, String msg) {
while (true) {
System.out.print(msg);
double val = scan.nextDouble();
if (val > 0)
return val;
System.err.println("Error - Value must be greater than zero. Please reenter!!");
}
}
}
public class Table {
public static void main(String[] args) {
System.out.println("Welcome to Tables are Us - Your One Stop Table Shop");
System.out.println("Mike - Master Table Builder");
int totalTables = 0;
double totalTableCost = 0;
Scanner scan = new Scanner(System.in);
scan.useLocale(Locale.ENGLISH);
while (true) {
int shapeMenuItem = getShapeMenuItem(scan);
if (shapeMenuItem == 4) {
printFinalResults(totalTables, totalTableCost);
return;
}
double area = getArea(scan, shapeMenuItem);
if (Double.isNaN(area))
System.err.println("Error - Invalid Entry. Please reenter a valid value.");
else {
int materialMenuItem = getMaterialMenuItem(scan);
double tableCost = area * getMaterialCost(materialMenuItem);
totalTableCost += tableCost;
totalTables++;
printReport(area, tableCost, materialMenuItem);
}
}
}
private static void printFinalResults(int numTable, double total) {
if (numTable == 0)
System.out.println("You did not estimate any tables today!");
else
System.out.format(Locale.ENGLISH, "\nThe total cost of the %d tables you estimated is $%.2f\n", numTable, total);
System.out.println("Thank you for using the table cost estimation program!");
System.out.println("GoodBye!!!");
}
private static void printReport(double area, double tableCost, int materialMenuItem) {
System.out.println("\nOutput Report:");
System.out.format(Locale.ENGLISH, "The area of table is %.2f square inches\n", area);
System.out.println("The table will be made of " + getMaterialName(materialMenuItem));
System.out.printf(Locale.ENGLISH, "The cost of the table is $%.2f\n", tableCost);
}
private static int getShapeMenuItem(Scanner scan) {
System.out.println("\n\nWhat shape of table do you wish to build?");
System.out.println("\t1. Rectangle");
System.out.println("\t2. Square");
System.out.println("\t3. Circle");
System.out.println("\t4. End Program");
System.out.print("Enter menu entry: ");
return scan.nextInt();
}
private static int getMaterialMenuItem(Scanner scan) {
while (true) {
System.out.println("\nWhat type of material do you want to use?");
System.out.println("\t1. Laminate ($0.125 per square inch)");
System.out.println("\t2. Oak ($0.25 per square inch)");
System.out.print("Enter menu entry: ");
int menu = scan.nextInt();
if (menu == 1 || menu == 2)
return menu;
System.err.println("Error - Invalid Entry. Please reenter a valid value.");
}
}
private static double getArea(Scanner scan, int shapeMenuItem) {
if (shapeMenuItem == 1)
return getRectangleArea(scan);
if (shapeMenuItem == 2)
return getSquareArea(scan);
if (shapeMenuItem == 3)
return getCircleArea(scan);
return Double.NaN;
}
private static double getRectangleArea(Scanner scan) {
double length = readDouble(scan, "Enter the length of the table (in inches): ");
double width = readDouble(scan, "Enter the width of the table (in inches): ");
return length * width;
}
private static double getSquareArea(Scanner scan) {
double length = readDouble(scan, "Enter the length of the table (in inches): ");
return length * length;
}
private static double getCircleArea(Scanner scan) {
double diameter = readDouble(scan, "Enter the diameter of the table (in inches): ");
double radius = diameter / 2;
return Math.PI * radius * radius;
}
private static String getMaterialName(int materialMenuItem) {
if (materialMenuItem == 1)
return "Laminate";
if (materialMenuItem == 2)
return "Oak";
return null;
}
private static double getMaterialCost(int materialMenuItem) {
if (materialMenuItem == 1)
return 0.125;
if (materialMenuItem == 2)
return 0.25;
return Double.NaN;
}
private static double readDouble(Scanner scan, String msg) {
while (true) {
System.out.print(msg);
double val = scan.nextDouble();
if (val > 0)
return val;
System.err.println("Error - Value must be greater than zero. Please reenter!!");
}
}
}