Java 是否可以以这种方式使用扫描仪?
我正在编程一些东西,创建多个教师对象:Java 是否可以以这种方式使用扫描仪?,java,Java,我正在编程一些东西,创建多个教师对象: 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 = "unkn
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[]) {
}
}
它是这样执行的:
Teacher teacherName("First Last", "Catch Phrase", 123);
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!");
}
我有多个教师对象。我正在尝试制作一个扫描仪,用于检查用户输入的数据,以查看输入的数字是否是其中一个对象的房间号:
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");
}
}
但我不知道怎么做。或者如果可能的话
任何帮助都将不胜感激
谢谢大家!
编辑:
我尝试了另一种方法。我尝试使用一个带有房间号的数组,并将其和输入进行比较,但并没有成功
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");
}
那没用。也没有:
if (Arrays.asList(rooms).contains(input)) {
System.out.println("Yes");
} else {
System.out.println("Nope");
}
如果您能在整数数组(或更好的方法)中使用此函数,将不胜感激
多谢各位
编辑2:
我让它像这样工作:
Teacher teacherName("First Last", "Catch Phrase", 123);
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!");
}
多谢各位 最简单的方法是创建一个
Teacher
数组,然后在while循环中放置一个for循环,该循环遍历所有Teacher
对象并检查房间号。
或者更好的办法是,制作一个只包含房间号码的数组,并在其中循环
另外,您可能希望在while循环之外实例化扫描仪,然后执行while(scan.hasNextInt()){…
所以会是这样的
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");
}
roomNum
不应为静态!静态表示所有教师共享一个房间号。您希望每位教师都有自己的房间号。