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进一步下来，它一直说当两个局部变量不能初始化时。不能似乎找到了问题错误：局部变量罐可能没有被初始化
import java.io.*;
import java.util.Scanner; //Scanner method
public class Popcorn1 {
public static void main(String args[]) throws FileNotFoundException{
printHeader();
File file;
do {
Scanner in = new Scanner (System.in);
System.out.println("Enter the the file name");
String filename = in.next();
file = new File(filename);
} while(!file.exists());
FileReader inputFile = new FileReader (file);
Scanner inFile = new Scanner(inputFile);
System.out.println(" PopCorn Co-op");
System.out.println(" Production in Hundreds");
System.out.println(" of Pint Jars Per Acre");
System.out.println(" 1 2 3 4 5 6");
System.out.println("Farm Name ---|---|---|---|---|---|");
System.out.println();
// Printing out title and table header for reader to easily read data
String errorMSG = " ";
while (inFile.hasNextLine()) {
String inputLine = inFile.nextLine();
//System.out.print(inputLine);
int position;
String name;
int jars;
double acres;
position = inputLine.indexOf(','); //Get the Location of the comma to use as a delimiter
name = inputLine.substring(0,position); //Everything to the left of the comma is the farm name
System.out.printf("%-31s", name);
inputLine = inputLine.substring(position + 2,inputLine.length()); //rest of the string
Scanner line = new Scanner(inputLine);
if(line.hasNextDouble())
acres = line.nextDouble();
else
errorMSG += "There is missing data";
if(line.hasNextInt())
jars = line.nextInt();
else
errorMSG += "There is missing data";
int starsConversion =(int)(jars/acres/25); **<-------- problem is here**
for (int i = 1; i < starsConversion; i++) {
if(i == 20)
System.out.print("#");
else
System.out.print("*");
}
if (starsConversion < 20) {
for (int i = 1; i < (21 - starsConversion); i++) {
System.out.print(" ");
}
System.out.print("|");}
System.out.println(); //go to the next line
}
System.out.println(errorMSG);
}
}