我可以為同一個實例變量分配兩個不同的值嗎？

Question

我僅限於使用指定的實例變量和指定的方法。 如何創建 2 個 DateTime 對象（一個用於當前日期，一個用於未來日期）同時對兩者使用相同的方法。 currentDate 和 futureDate 應該有不同的值，但我不知道如何在只使用這些方法和變量的情況下做到這一點。

public class DateTime {  //Enter and calculate data time

private int month; //Month instance variable
private int day; // Day instance variable
private int hour; // Hour instance variable
private int minute; // Minutes instance variable
private int second; // Second instance variable
private Scanner input = new Scanner(System.in); // Instance variable for all inputs



public void inputMonth() { // Input month value
    System.out.print("Enter the month (1-12): ");
    month = input.nextInt();
    }

public void inputDay() { // Input days value
    System.out.print("Enter the day (1-30): ");
    day = input.nextInt();
    }

public void inputHours() { // Input hours value
    System.out.print("Enter the hour (0-23): ");
    hour = input.nextInt();
    }

public void inputMinutes() { // Input minutes value
    System.out.print("Enter the minutes (0-59): ");
    minute = input.nextInt();
    }

public void inputSeconds() {  //  Input seconds value 
    System.out.print("Enter the seconds (0-59): ");
    second = input.nextInt();
    }
}

Answer 1

Create a new Class and create 2 objects of your DateTime Class as given 
below:
class Runner
{
    DateTime currentDate = new CurrentDate();
    currentDate.inputMonths();
    currentDate.inputDays();
    currentDate.inputHours();
    currentDate.inputMinutes();
    currentDate.inputSeconds();

//Now Create Another Object of DateTime Class:
    DateTime futureDate = new CurrentDate();
    futureDate.inputMonths();
    futureDate.inputDays();
    futureDate.inputHours();
    futureDate.inputMinutes();
    futureDate.inputSeconds();
}//end of class

Create ShowDate method in your DateTime class and call it with both the objects.