java调用类文件及其方法
这是我在SalesManager客户端应用程序中的当前代码,我想提示用户输入文件名。然后NSTATITE一个SalesAnalyzer对象并调用上面的所有方法,输出每个方法的结果
我如何称呼SalesAnaylzer及其所有方法
销售经理:
import java.io.File;
import java.text.DecimalFormat;
import java.util.Scanner;
import java.io.IOException;;
public class SalesManager
{
public static void main( String []args) throws IOException
{
System.out.println(" What is the name of the file");
Scanner scan= new Scanner(System.in);
String fileName= scan.next();
}
}
下面是类文件:
import java.io.File;
import java.text.DecimalFormat;
import java.util.Scanner;
import java.io.IOException;
import java.util.*;
import javax.swing.*;
import java.awt.*;
public class SalesAnaylzer {
DecimalFormat pricePattern = new DecimalFormat("$#0.00");
int[][] sales = new int[3][4];
public SalesAnaylzer(String fileName) throws IOException {
File inputFile = new File(fileName);
Scanner scan = new Scanner(inputFile);
for (int row = 0; row < 4; row++) {
for (int col = 0; col < 6; col++) {
sales[row][col] = scan.nextInt();
}
}
}
public String toString() {
String data = "";
for (int row = 0; row < 4; row++) {
data = data + "\nStore " + (row + 1) + ": ";
for (int col = 0; col < 6; col++) {
data = data + "QTR " + (col + 1) + ": " + pricePattern.format(sales[row][col]) + " ";
}
}
return data;
}
public double totalSales() {
double total = 0.0;
for (int row = 0; row < 4; row++) {
for (int col = 0; col < 6; col++) {
total = total + sales[row][col];
}
}
return total;
}
public double highStoreSales(int store) {
double highest = 0.0;
for (int row = 0; row < 4; row++) {
if (sales[row][store] > highest)
highest = sales[row][store];
}
return highest;
}
public double averageStoreSales(int quarter) {
double total = 0.0;
double avg = 0.0;
for (int col = 0; col < 6; col++) {
total = total + sales[quarter][col];
}
avg = (total / 4);
return avg;
}
}
共 (0) 个答案