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我需要這個幫助。我試圖讓這個數組正常工作，但不知道我做錯了什麼。我是一個小白Java和真的需要一些幫助java.lang.ArrayIndexOutOfBoundsException：10 Array
private static int respondentID;
private static int count;
static void enterQuestions() {
throw new UnsupportedOperationException("Not supported yet."); //To change body of generated methods, choose Tools | Templates.
}
private String surveyName;
private boolean surveyStart = true;
private boolean surveyStop = true;
private String question [] = new String[10];
private int responses[][]= new int[10][10];
Scanner input = new Scanner(System.in);
// first overloaded constructor
public Phase2() {
this("Customer Survey");
respondentID = 0;
count = 0;
} // end
// second overloaded constructor
public Phase2(String title) {
surveyName = title;
respondentID = 0;
count = 0;
} // end constructor Survey
// method to be called when a user starts filling out a survey (surveyStart will have been set to "true")
public int startSurveyCount(int ct) { // parameter for testing only
if(surveyStart) {
if(respondentID > 0) {
if(count >= respondentID) {
count++;
} else {
setCount(getRespondentID());
}
} else {
//test
setCount(ct);
count = getCount();
count++;
setCount(count - 1);
}
}
return count;
} // end method
// method to be called when a survey is successfully
public int generateRespondentID() {
if(surveyStop) {
//
count = getCount();
setRespondentID(count);
} else {
if(count < 2) {
count = 0;
respondentID = 0;
} else {
count--;
setCount(count);
}
}
return respondentID;
} // end method generateRespondentID
public void setRespondentID(int count) {
// count is the number of completed surveys.
respondentID = count;
respondentID++; // and then incremented by 1.
} //end method
public int getRespondentID() {
return respondentID;
} // end method
public void setSurveyTitle(String title) {
surveyName = title;
} // end method
public String getSurveyTitle() {
return surveyName;
} // end method
public void setCount(int ct) {
count = ct;
} // end method
public int getCount() {
return count;
} // end method
public void setSurveyStart(boolean surveySt) {
surveyStart = surveySt;
} // end method
public boolean getSurveyStart() {
return surveyStart;
} // end method
public void setSurveySubmit(boolean surveySub) {
surveyStop = surveySub;
} // end method
public boolean getSurveySubmit() {
return surveyStop;
} // end method
public void logResponse(int respondentID, int questionNumber, int responseEntered)
{
responses[respondentID] [questionNumber-1] = responseEntered;
}
public void displaySurveyResults (int no)
{
for (int j=0; j<10; j++)
System.out.print("Question"+(no)+" : " + question[no-1]+"Reply");
if (responses[respondentID][no] == 0)
{
System.out.print("NO");
}
else
{
System.out.print("Yes");
}
}
public void enterQuestion()
{
for (int i=0; i<10; i++)
{
System.out.println("Enter Question "+(i+1)+" : ");
question[i] = input.nextLine();
}
}
public void displayQuestionStats(int no)
{
int answer;
System.out.print("Question"+(no)+" : "+question[no-1]+" (0-No/1-Yes) : ");
answer = input.nextInt();
logResponse(respondentID, no, answer);
}
}
這是我的測試
public static void main(String[] args) {
Scanner input = new Scanner(System.in);
System.out.println("Below are the results of running the no–argument");
// demonstrates the no–arg constructor
Phase2 noArgSurvey = new Phase2();
System.out.printf("The no–argument survey values are:\ntitle: %s\n"
+ "initial value of respondentID: %d\ncount: %d\n",
noArgSurvey.getSurveyTitle(), noArgSurvey.getRespondentID(),
noArgSurvey.getCount());
// demonstrates the constructor with a title argument (for user input of survey title)
System.out.println("\nPlease enter a name for the survey");
String inputTitle = input.nextLine();
System.out.println(); // inserts a blank line
Phase2 titleArgConst = new Phase2(inputTitle);
System.out.printf("Survey Name is: %s\n"
+ "initial values of:\nrespondentID: %d\ncount: %d\n\n",
titleArgConst.getSurveyTitle(), titleArgConst.getRespondentID(),
titleArgConst.getCount());
//respondent id test
System.out.println("This will test the generateRespondentID method.\n\n"
+ "Enter the number of surveys that have been taken");
int testInt = input.nextInt();
// values for respondentID and count after 1 survey has been successfully submitted
System.out.println("\nAssuming " + testInt + " surveys submitted");
Phase2 oneDone = new Phase2();
oneDone.startSurveyCount(testInt);
oneDone.generateRespondentID();
System.out.printf("The Respondent ID is: %d\ncount: %d\n\n",
oneDone.getRespondentID(), oneDone.getCount());
noArgSurvey.enterQuestion();
for(int i = 1; i <= 10; i++)
{
noArgSurvey.displayQuestionStats(i);
}
//Display The Inputs Entered by User
System.out.println("Result for Survey with Title \""+titleArgConst.getSurveyTitle()+"\" :");
for(int i=1; i<11; i++)
{
noArgSurvey.displaySurveyResults(i);
}
} // end main method
} // end class SurveyTest
數組是基於0索引的。你可以在'displayQuestionStats'中處理，而不是'logResponse'中。 –
當你問一個關於例外的問題時，你應該指出引發它的那一行。這是IDE會在堆棧跟蹤中告訴您的信息。 – Radiodef