Eines meiner Ergebnisse ist durcheinander

Question

Ich arbeite an einem Projekt, bei dem der Benutzer das aktuelle Datum sowie seinen Geburtstag eingegeben hat. Der gesamte Code berechnet ihr Alter und druckt das Datum aus. Für das aktuelle Datum sollte es 14.11.2016 zeigen, zeigt aber stattdessen 14.04.2016 und ich kann nicht herausfinden, wo ich falsch gelaufen bin.

Hier ist der Code:

public class BroDoYouEvenAge { 

    // add in try-catch statements x 
    // only numeric values x 
    // leap year 
    // loop if invalid 
    // loop if day is invalid 
    // less than 1 or greater than max day x 
    // add in no spaces or letters x 

    // VALIDATION FOR MONTHS x 
    // loop if invalid 
    // same year x 

    // try again x 
    // loop if invalid 

    static int cDay; 
    static int cMonth; 
    static int bYear; 
    static int bMonth; 
    static int bDay; 

    public static void run() { 
     prompt(); 
     retry(); 
    } 

    public static void prompt() { 
     BufferedReader delta = new BufferedReader(new InputStreamReader(System.in)); 
     try { 

      System.out.println("Please enter the current year"); 
      String Year = delta.readLine(); 
      int cYear = Integer.parseInt(Year); 

      // prompts the user for the current month as a numeric value 
      boolean validmonth = false; 
      while(!validmonth){ 
      System.out.println("Please enter the current month as a numeric value"); 
      String Month = delta.readLine(); 
      int cMonth = Integer.parseInt(Month); 

      if (cMonth < 1 || cMonth > 12) { 
       System.out.println("Your input was invalid"); 
      }else{ 
       validmonth = true; 
      } 
      } 

      // prompts the user for the current day as a numeric value 
      boolean validday = false; 

      while (!validday) { 
       System.out.println("Please enter the current day as a numeric value"); 
       String Day = delta.readLine(); 
       cDay = Integer.parseInt(Day); 

       if (cDay < 1) { 
        System.out.println("Your input was invalid"); 
       }else if (cDay > 31) { 
        System.out.println("Your input was invalid"); 
       }else if (cMonth == 4 && cDay > 30) { 
        System.out.println("Your answer is invalid"); 
       }else if (cMonth == 6 && cDay > 30) { 
        System.out.println("Your answer is invalid"); 
       }else if (cMonth == 9 && cDay > 30) { 
        System.out.println("Your answer is invalid"); 
       }else if (cMonth == 11 && cDay > 30) { 
        System.out.println("Your answer is invalid"); 
       }else{ 
        validday = true; 
       } 
      } 

      // prompts the user for their birth year 
      boolean validYear = false; 
      while(!validYear){ 
      System.out.println("Please enter your birth year"); 
      String Year2 = delta.readLine(); 
      bYear = Integer.parseInt(Year2); 

      if (bYear > cYear) { 
       System.out.println("Your answer was invalid"); 
      }else{ 
       validYear = true; 
      } 
     } 
      // does not allow user to input a value greater than their current 
      // year 
      // loops if invalid 

      // prompts the user for their birth month 
      boolean _validmonth = false; 
      while(!_validmonth){ 
      System.out.println("Please enter your birth month as a numeric value"); 
      String Month2 = delta.readLine(); 
      bMonth = Integer.parseInt(Month2); 

      if(bMonth < 1 || bMonth> 12){ 
       System.out.println("Your answer was invalid"); 
       }else{ 
        _validmonth = true; 
       } 
      } 

      // prompts the user for their birth day 
      boolean _validday = false; 
      while(!_validday){ 
      System.out.println("Please enter the day you were born as a numeric value"); 
      String Day2 = delta.readLine(); 
      bDay = Integer.parseInt(Day2); 
      // prints out collected data 

      if (bMonth == 4 && bDay > 30) { 
       System.out.println("Your answer is invalid"); 
      }else if (bMonth == 6 && bDay > 30) { 
       System.out.println("Your answer is invalid"); 
      }else if (bMonth == 9 && bDay > 30) { 
       System.out.println("Your answer is invalid"); 
      }else if (bMonth == 11 && bDay > 30) { 
       System.out.println("Your answer is invalid"); 
      }else{ 
       _validday= true; 
      } 
      } 

      System.out.println("The current date is " + cMonth + "/" + cDay + "/" + cYear); 
      System.out.println("Your birthday is " + bMonth + "/" + bDay + "/" + bYear); 

      // calculates and prints age 
      if (cMonth > bMonth) { 
       int age = cYear - bYear; 
       System.out.println("You are " + age + " years old "); 
      } else if (cMonth < bMonth) { 
       int age = (cYear - bYear); 
       System.out.println("You are " + age + " years old "); 
      } else if (cMonth == bMonth && cDay > bDay) { 
       int age = cYear - bYear; 
       System.out.println("You are " + age + " years old."); 
      } else if (cMonth == bMonth && cDay < bDay) { 
       int age = (cYear - bYear) - 1; 
       System.out.println("You are " + age + " years old. "); 
      } else if (cYear == bYear) { 
       System.out.println("You are not even a year old."); 
      } else { 

       System.out.println("Your input was invalid"); 
      } 
     } catch (IOException IOE) { 

     } catch (NumberFormatException NFE) { 
      System.out.println("Please enter a numeric value without spaces, letters, or special characters"); 
     } 
    } 

    public static void retry() { 
     BufferedReader delta = new BufferedReader(new InputStreamReader(System.in)); 

     try { 
      boolean valid = false; 
      while (!valid) { 
       System.out.println("Would you like to try again? 1) Yes or 2) No"); 
       System.out.println("Please enter a number"); 
       String retry = delta.readLine(); 
       int trynum = Integer.parseInt(retry); 

       if (trynum < 1 || trynum > 2) { 
        System.out.println("Your input was invalid. Please enter 1 or 2."); 
        continue; 
       } else if (trynum == 1) { 
        prompt(); 
       } else if (trynum == 2) { 
        System.out.println("Okay then."); 
        System.exit(0); 
       } else { 
        System.out.println("Invalid"); 
        continue; 
       } 
      } 
     } catch (IOException IOE) { 

     } catch (NumberFormatException NFE) { 
      System.out.println("Please enter a number"); 
     } 

    } 

} 

Answer 1

Sie sind eine neue cMonth Variable initialisiert, wenn sie auf der Linie, die die Monate Wert Lesen

System.out.println("Please enter the current month as a numeric value"); 
String Month = delta.readLine(); 
int cMonth = Integer.parseInt(Month); 

einfach die Initialisierung der Variablen cMonth lokalen entfernen, wie Sie wollen beziehen sich auf eine globale Variable.

System.out.println("Please enter the current month as a numeric value"); 
String Month = delta.readLine(); 
cMonth = Integer.parseInt(Month); 

Nur Sie den Code Arbeitsquelle zu schaffen, ich Arbeitslösung am Einfügen:

import java.io.BufferedReader; 
import java.io.IOException; 
import java.io.InputStreamReader; 

public class BroDoYouEvenAge { 

    // add in try-catch statements x 
    // only numeric values x 
    // leap year 
    // loop if invalid 
    // loop if day is invalid 
    // less than 1 or greater than max day x 
    // add in no spaces or letters x 

    // VALIDATION FOR MONTHS x 
    // loop if invalid 
    // same year x 

    // try again x 
    // loop if invalid 

    static int cDay; 
    static int cMonth; 
    static int bYear; 
    static int bMonth; 
    static int bDay; 

    public static void main(String[] args) { 
     run(); 
    } 

    public static void run() { 
     prompt(); 
     retry(); 
    } 

    public static void prompt() { 
     BufferedReader delta = new BufferedReader(new InputStreamReader(System.in)); 
     try { 

      System.out.println("Please enter the current year"); 
      String Year = delta.readLine(); 
      int cYear = Integer.parseInt(Year); 

      // prompts the user for the current month as a numeric value 
      boolean validmonth = false; 
      while(!validmonth) { 
       System.out.println("Please enter the current month as a numeric value"); 
       String Month = delta.readLine(); 
       cMonth = Integer.parseInt(Month); 

       if(cMonth < 1 || cMonth > 12) { 
        System.out.println("Your input was invalid"); 
       } else { 
        validmonth = true; 
       } 
      } 

      // prompts the user for the current day as a numeric value 
      boolean validday = false; 

      while(!validday) { 
       System.out.println("Please enter the current day as a numeric value"); 
       String Day = delta.readLine(); 
       cDay = Integer.parseInt(Day); 

       if(cDay < 1) { 
        System.out.println("Your input was invalid"); 
       } else if(cDay > 31) { 
        System.out.println("Your input was invalid"); 
       } else if(cMonth == 4 && cDay > 30) { 
        System.out.println("Your answer is invalid"); 
       } else if(cMonth == 6 && cDay > 30) { 
        System.out.println("Your answer is invalid"); 
       } else if(cMonth == 9 && cDay > 30) { 
        System.out.println("Your answer is invalid"); 
       } else if(cMonth == 11 && cDay > 30) { 
        System.out.println("Your answer is invalid"); 
       } else { 
        validday = true; 
       } 
      } 

      // prompts the user for their birth year 
      boolean validYear = false; 
      while(!validYear) { 
       System.out.println("Please enter your birth year"); 
       String Year2 = delta.readLine(); 
       bYear = Integer.parseInt(Year2); 

       if(bYear > cYear) { 
        System.out.println("Your answer was invalid"); 
       } else { 
        validYear = true; 
       } 
      } 
      // does not allow user to input a value greater than their current 
      // year 
      // loops if invalid 

      // prompts the user for their birth month 
      boolean _validmonth = false; 
      while(!_validmonth) { 
       System.out.println("Please enter your birth month as a numeric value"); 
       String Month2 = delta.readLine(); 
       bMonth = Integer.parseInt(Month2); 

       if(bMonth < 1 || bMonth > 12) { 
        System.out.println("Your answer was invalid"); 
       } else { 
        _validmonth = true; 
       } 
      } 

      // prompts the user for their birth day 
      boolean _validday = false; 
      while(!_validday) { 
       System.out.println("Please enter the day you were born as a numeric value"); 
       String Day2 = delta.readLine(); 
       bDay = Integer.parseInt(Day2); 
       // prints out collected data 

       if(bMonth == 4 && bDay > 30) { 
        System.out.println("Your answer is invalid"); 
       } else if(bMonth == 6 && bDay > 30) { 
        System.out.println("Your answer is invalid"); 
       } else if(bMonth == 9 && bDay > 30) { 
        System.out.println("Your answer is invalid"); 
       } else if(bMonth == 11 && bDay > 30) { 
        System.out.println("Your answer is invalid"); 
       } else { 
        _validday = true; 
       } 
      } 

      System.out.println("The current date is " + cMonth + "/" + cDay + "/" + cYear); 
      System.out.println("Your birthday is " + bMonth + "/" + bDay + "/" + bYear); 

      // calculates and prints age 
      if(cMonth > bMonth) { 
       int age = cYear - bYear; 
       System.out.println("You are " + age + " years old "); 
      } else if(cMonth < bMonth) { 
       int age = cYear - bYear; 
       System.out.println("You are " + age + " years old "); 
      } else if(cMonth == bMonth && cDay > bDay) { 
       int age = cYear - bYear; 
       System.out.println("You are " + age + " years old."); 
      } else if(cMonth == bMonth && cDay < bDay) { 
       int age = cYear - bYear - 1; 
       System.out.println("You are " + age + " years old. "); 
      } else if(cYear == bYear) { 
       System.out.println("You are not even a year old."); 
      } else { 

       System.out.println("Your input was invalid"); 
      } 
     } catch(IOException IOE) { 

     } catch(NumberFormatException NFE) { 
      System.out.println("Please enter a numeric value without spaces, letters, or special characters"); 
     } 
    } 

    public static void retry() { 
     BufferedReader delta = new BufferedReader(new InputStreamReader(System.in)); 

     try { 
      boolean valid = false; 
      while(!valid) { 
       System.out.println("Would you like to try again? 1) Yes or 2) No"); 
       System.out.println("Please enter a number"); 
       String retry = delta.readLine(); 
       int trynum = Integer.parseInt(retry); 

       if(trynum < 1 || trynum > 2) { 
        System.out.println("Your input was invalid. Please enter 1 or 2."); 
        continue; 
       } else if(trynum == 1) { 
        prompt(); 
       } else if(trynum == 2) { 
        System.out.println("Okay then."); 
        System.exit(0); 
       } else { 
        System.out.println("Invalid"); 
        continue; 
       } 
      } 
     } catch(IOException IOE) { 

     } catch(NumberFormatException NFE) { 
      System.out.println("Please enter a number"); 
     } 
    } 
}