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可以通過這種方式使用掃描儀嗎?

[英]It is possible to use a Scanner in this manner?

我正在編寫一些東西,它創建了多個Teacher對象:

public class Teacher {

// 1) Define instance variables
String teacherName;
String catchPhrase;
public static int roomNum;
// 2) Write the constructor method

public Teacher() {
    teacherName = "unknown";
    catchPhrase = "unknown";
    roomNum = 0;
}//end no-arg constructor

public Teacher(String newTeacher, String newCatch, int newRoom) {
    teacherName = newTeacher;
    catchPhrase = newCatch;
    roomNum = newRoom;
}



// 3) Write the proccessing methods (getters and setters)

public void setName(String newName) {
    teacherName = newName;
}

public String getName() {
    return teacherName;
}

public static int getRoom() {
    return roomNum;

}

// 4) Write the out method (eg toString() method)

public String toString() {

    String str = "Name: " + teacherName + ". \nCatch phrase: " + catchPhrase + " \nRoom number: " + roomNum + ".";

    return str;

}//end toString

public static void main(String args[]) {

}
}

它是這樣執行的:

Teacher teacherName("First Last", "Catch Phrase", 123); 

我有多個教師對象。 我正在嘗試使掃描儀檢查用戶輸入,以查看輸入的數字是否是這些對象之一的房間號:

 while (input != -1) {
        Scanner scan = new Scanner(System.in);
        input = scan.nextInt();
            if(input == Teacher.getRoom()) {
                System.out.println("Yes");
            } else if(input != Teacher.getRoom()) {
                System.out.println("Nope");
            }

        }

但是我不確定該怎么做。 或者,如果有可能。

任何幫助將不勝感激。

謝謝!

編輯:

我嘗試了另一種方式。 我試圖使用帶有房間號的數組,並將其與輸入進行比較,但是沒有用。

int[] rooms = {220, 226, 204, 234, 236, 242, 243, 129, 125, 136, 101, 104, 107, 113, 103, 105, 102, 108, 117, 111, 111, 313, 310, 132, 127, 129, 125, 
            + 124, 122, 126, 130, 137, 114, 138, 136, 123, 135, 128, 139, 134, 220, 215, 211, 222, 253, 213, 252, 231, 255, 224, 254, 
            + 218, 235, 233, 000, 212, 223, 257, 217, 259, 214, 240, 258, 221, 210, 219, 256, 216, 110, 133, 115, 423, 253, 230, 115, 106, 1062, 418, 415};

 if (rooms.equals(input)) {
            System.out.println("Yes");
        } else {
            System.out.println("Nope");
        }

那沒用。 也沒有:

 if (Arrays.asList(rooms).contains(input)) {
            System.out.println("Yes");
        } else {
            System.out.println("Nope");
        }

任何幫助使它與整數數組(或更好的方法)一起使用的方法,將不勝感激。

謝謝。

EDIT2:

我讓它像這樣工作:

if (rooms.contains(input)){
            System.out.println("That teacher is in our database!");
            //System.out.println(new int[(rooms).indexOf(1)]);
        } else {
        System.out.println("Sorry, that teachner was not found in our database!");
    }

非常感謝你!

最簡單的方法是創建一個Teacher數組,然后在while循環內,放置一個for循環,循環遍歷所有Teacher對象並檢查房間號。 甚至更好的是,僅排列房間號的數組並循環遍歷。

另外,您可能想在while循環之外實例化掃描程序,然后執行while(scan.hasNextInt()){...

所以就像

Scanner scan = new Scanner(System.in);
Teacher[] teachears...
while (scan.hasNextInt()) {
    input = scan.nextInt();
    boolean isARoom = false;
    for(Teacher teach : teachers){
        if(input == teach.getRoom()) {
            isARoom = true;
        } 
    }
    if(isARoom)
        System,out.println("Yes");
    else
        System,out.println("No");  
 }

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