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即使在IF為true之后,ELSE語句仍在執行

[英]ELSE statement still executing even after IF is true

以下代碼允許用戶輸入足球隊和得分。 如果用戶輸入的足球隊與陣列列表中已有的球隊相匹配,則它將執行代碼。

當外部if語句為true時,為什么else語句仍然執行? (即,即使執行了if語句, itCounter仍會增加)。 如何確保在執行“如果”后不再執行它?

int homeScore = 0;
int awayScore = 0;

int itCounter = 0;
boolean again = true;
while (again) {
    System.out.println("");
    System.out.println("Enter name of Home team: ");
    final String homeName = input.next();
    Iterator<FootballClub> it = premierLeague.iterator();
    while (it.hasNext()) {
        if ((it.next().getClubName()).equals(homeName)) {
            System.out.println("Enter number of goals scored by " + homeName + ":");
            Scanner input2 = new Scanner(System.in);
            homeScore = input2.nextInt();
            premierLeague.get(itCounter).setGoalsScored(homeScore);
            System.out.println("itCounter value = " + itCounter);
            again = false;
        } else {
            itCounter++;
            System.out.println("itCounter increased, value = " + itCounter);
        }
        if (itCounter == premierLeague.size()) {

            System.out.println("You must enter a valid team!");
            itCounter = 0;
            System.out.println("itCounter increased, value = " + itCounter);
        }
    }
}

打破團隊的查找循環:

boolean found = false;
Iterator<FootballClub> it = premierLeague.iterator();
int itCounter = 0;
while (it.hasNext()) {
    if ((it.next().getClubName()).equals(homeName)) {
        System.out.println("Enter number of goals scored by " + homeName + ":");
        // Scanner input = new Scanner(System.in);
        homeScore = input.nextInt();
        premierLeague.get(itCounter++).setGoalsScored(homeScore);
        again = false;
        found = true;
        break;
    }
}
if( ! found ){
    System.out.println("You must enter a valid team!");
}

注意1:請務必重新開始循環,以重新設置所有變量的團隊。

注意2:請勿在同一輸入流上創建其他掃描儀。

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