我的程序不允许我在构造函数中要求用户输入

Question

我正在为数字时钟创建一堆方法和构造函数，我正在尝试制作一个用户输入所有内容但程序不允许我要求用户输入的方法和构造函数。

import java.util.Scanner;

 import java.util.Calendar;

 public class DigitalClock {

 Calendar calendar = Calendar.getInstance();

 int hour = 0;

 int minute = 0;

 boolean am = true;


 public DigitalClock() {
    hour = 12;
    minute = 0;
    am = true;
 }

 public void setTime() {
hour = input.nextInt();
minute = input.nextInt();

}
public void getHour() {
hour = calendar.get(Calendar.HOUR_OF_DAY); 
}

public void getMinute() {
minute = calendar.get(Calendar.MINUTE);
}

public void isMorning() {
if(hour > 12){
am = false;
}else{
am = true;
}


}




}

Answer 1

Scanner object is not used. Main method is missing as well.

Scanner input = new Scanner(System.in); needs to be added. Add a println to ask for inputs.

example: 

Scanner input= new Scanner(System.in);  // Read from System.in
System.out.println("Enter the Hour: ");
hour = input.nextInt(); // Scans the input as an int.

input.close();