最初のフェーズでは、レース結果をテキスト ファイルから読み取ろうとしています。すべての行がまったく同じ形式である場合、問題はありません。これを難しくしている部分は学校名です。テキスト ファイル内の行の例を次に示します。
1 262 Jackson Bertoli (12) Terre Haute South 15:29.1 4:59
各学校には、その名前に 1、2、または 3 つの単語が含まれる場合があります。そこで、学校名の後に整数 (時刻) を探して、そこで学校名の単語の検索を停止しようとしました。しかし、reader.next(); から自分の値を取得する際に問題が発生しています。1つはvoidを使用し、もう1つは静的を使用するため、整数から文字列を評価するコードの部分にプラグインします。さらに、コード全体で変数 schoolnext と schoolnext2 を認識できません。
かなり長いですが、これは私の最初のビッグボーイプログラムであり、私が持っているもの、または試してみるべきさまざまな方法についての助けを大いに感謝します. いつもご覧いただきありがとうございます。
/* Original program done by Donald Bough started 11/01/13
* Cross Country results experimenter!
* Put your results from indianarunner.com in a .txt file, plug them into the program, and
* you should "eventually be able to" modify your own time or others in the text file
* to see how it would've affected team places and points.
*
* As of 11/04/13 I'm stuck figuring out how to tell, when scanning the text file, how many words make
* up the school name, then printing off the rest of the results according to that number. This is the
* beginning phase where I'm just trying to re-print off what the results already have basically.
* Once I figure this out, I plan on taking those variables and actually doing the math with it.
*/
import java.lang.*;
import java.io.*;
import java.util.*;
public class myreadfile {
//Setting up my variables
int setschool = 0;
int setschool2 = 0;
String schoolnext;
String schoolnext2;
private Scanner reader;
//Opening my text file with the race results. This part works 100%
public void openfile(){
try{
reader = new Scanner(new File("C:\\Donalds\\Java\\Partsemistateresults.txt"));
}
catch (Exception e){
System.out.println("This file does not exist");
}
}
// Taking care of the first line of words we don't want to deal with. This also works 100%
public void firstline(){
String a = reader.next();
String b = reader.next();
String c = reader.next();
String d = reader.next();
String e = reader.next();
String f = reader.next();
String g = reader.next();
System.out.printf("%s %s %s %s %s %s %s" , a , b, c , d ,e , f, g);
}
//tells if a string is an integer. Everything from now on gets uncertain and sticky.
public static boolean isInteger(String schoolnext) {
try {
Integer.parseInt(schoolnext);
} catch(NumberFormatException e) {
// This isn't an integer, so the number 2 is telling us we have a string
//I want to move onto the next word since it's another name in the
//school. Now go back down to the readfile method.
int setschool=+2;
return false;
}
//Is an integer. We now know schoolnext took the value of an integer. This
//integer would be the time part of the race results. Signal to move past
//the attempt in finding school names. Now go back down to the readfile method.
int setschool =+1;
return true;
}
//This is where the program goes after deciding we had another word in the school na,e/
public static boolean isInteger2(String schoolnext2) {
try {
Integer.parseInt(schoolnext2);
} catch(NumberFormatException e) {
//schoolnext2 turns out to be a string, that's three school word names. DONE
int setschool2=+2;
return false;
}
//schoolnext2 turns out to be an integer, we're done. schoolnext2 value is the time value
int setschool2 =+1;
return true;
}
// Meat of the code, goes through all the lines
public void readfile(){
while(reader.hasNext()){
//These are going to always be in this order, makes it do-able and simple.
String place = reader.next();
String bib = reader.next();
String firstname = reader.next();
String lastname = reader.next();
String grade = reader.next();
String school = reader.next() ;
String schoolnext = reader.next();
/* *** Here is where I have trouble. All the schools have a different amount of words
in their school name. You will now see my attempt at telling when the next part of the
race results line is part of the school name or the time *** */
// If setschool== 1, it is an integer. Making schoolnext in this case our time string
//from the race results. Then we print the rest off.
if (setschool == 1) {
String pace = reader.next();
System.out.printf("%s %s %s %s %s %s %s %s\n" , place, bib, firstname,
lastname, grade, school, schoolnext, pace);
}
// If setschool was == 2, the next word isn't an integer, its another school name.
// So we continue on with trying to find if the next string is the race results time
//or another school name
if (setschool == 2){
String schoolnext2 = reader.next();
//The most words a school has is 3, so once we know the third string is also a word,
//we can can print off the 3 school strings which are representing each word of the
//school.
if(setschool2 == 2){
String time = reader.next();
String pace = reader.next();
System.out.printf("%s %s %s %s %s %s %s %s %s %s\n" , place, bib, firstname,
lastname, grade, school, schoolnext, schoolnext2, time, pace);
}
//The third word was an integer, our time from the race results. So now we print off
//the two other Strings and realize schoolnext2 took on the schoolnext2 value
if(setschool2 == 1){
String pace = reader.next();
System.out.printf("%s %s %s %s %s %s %s %s %s\n" , place, bib, firstname, lastname,
grade, school, schoolnext, schoolnext2, pace);
}
}
}
}
//Closing the file for good programming
public void closefile(){
reader.close();
}
}