一度に出力を一度に一度に印刷する方法 - JAVA

Question

package validation; 
import java.util.*; 

public class Validation { 
    public static void main(String[] args) { 
     Scanner input = new Scanner(System.in); 
     String regex = "^[a-zA-Z ]+$"; 
     String regex1 = "\\d[0-9]|[1-9]"; 
     String regex2 = "^[a-zA-Z0-9 ]+$"; 
     String Char; 
     String num; 
     String chars; 
     System.out.println("WELCOME TO Mixed Martial Art's CLUB REGISTRATION"); 
     do{ 
      System.out.print("\nWhat Is Your Name:"); 
      Char = input.nextLine(); 

      if (Char.matches(regex)) 
       System.out.println("\nWelcome:"+" "+Char); 
      else if (Char.isEmpty()) 
       System.out.println("String field should not be Empty."); 
      else if(!Char.matches(regex)) 
       System.out.println("Please Enter A Valid String!"); 
     } while(!Char.matches(regex)); 

     do {  
      System.out.print("\nHow Old Are you:"); 
      num = input.nextLine(); 
      if (num.isEmpty()) 
       System.out.println("Number field should not be Empty.");  
      else if (!num.matches(regex1)){ 
       System.out.println("Please Enter A Valid Number!"); 
      } else{ 
       if(Integer.parseInt(num)<=18){ 
        System.out.println("Sorry But You Are Underage.");     

       } else { 
        if (Integer.parseInt(num)<=39) { 
         System.out.println("You Are Qualified"); 
        } else { 
         System.out.println("Opps! You Are OVER AGE!"); 
        } 
       }      
      } 
     }while(!num.matches(regex1));   
    } 
} 

上記のコードは私が期待したとおりに動作していますが、最終的な出力を変更する必要があります。出力をすべて印刷する私はすべての詳細を入力した後すぐに。

Answer 1

あなたはあなたのコードに応じて1つの文字列として出力を取得するには、次のコードを使用することができます。ここではStringBuilderを使用して関連する出力を追加しています。最後に私はそれの内容を印刷しています。

その後、

import java.util.Scanner; 

public class Validation { 
public static void main(String[] args) { 
    Scanner input = new Scanner(System.in); 
    String regex = "^[a-zA-Z ]+$"; 
    String regex1 = "\\d[0-9]|[1-9]"; 
    String regex2 = "^[a-zA-Z0-9 ]+$"; 
    String Char; 
    String num; 
    String chars; 
    System.out.println("WELCOME TO Mixed Martial Art's CLUB REGISTRATION"); 

    StringBuilder output = new StringBuilder(); 

    do { 

     System.out.print("\nWhat Is Your Name:"); 
     Char = input.nextLine(); 

     if (Char.matches(regex)) 
      // System.out.println("\nWelcome:"+" "+Char); 
      output.append("\nWelcome:" + " " + Char); 
     else if (Char.isEmpty()) 
      System.out.println("String field should not be Empty."); 
     else if (!Char.matches(regex)) 
      System.out.println("Please Enter A Valid String!"); 
    } while (!Char.matches(regex)); 

    do { 

     System.out.print("\nHow Old Are you:"); 
     num = input.nextLine(); 
     if (num.isEmpty()) 
      System.out.println("Number field should not be Empty."); 
     else if (!num.matches(regex1)) { 
      System.out.println("Please Enter A Valid Number!"); 
     } else { 
      if (Integer.parseInt(num) <= 18) { 
       // System.out.println("Sorry But You Are Underage."); 
       output.append("\nSorry But You Are Underage."); 

      } else { 
       if (Integer.parseInt(num) <= 39) { 
        // System.out.println("You Are Qualified"); 
        output.append("\nYou Are Qualified"); 
       } else { 
        // System.out.println("Opps! You Are OVER AGE!"); 
        output.append("\nOpps! You Are OVER AGE!"); 
       } 
      } 
     } 

    } while (!num.matches(regex1)); 

    System.out.println(output); 

} 
} 

Answer 2

使用StringBuilderあなたの出力を構築するために：

StringBuilder sb = new StringBuilder(); 
sb.append("Thank you for registering.\n"); 
sb.append("Please verify your data:\n"); 
//... 

System.out.println(sb.toString()); 

Answer 3

import java.util.*; 

public class Validation { 

    public static void main(String[] args) { 
     Scanner input = new Scanner(System.in); 
     String regex = "^[a-zA-Z ]+$"; 
     String regex1 = "\\d[0-9]|[1-9]"; 
     String nameChar; 
     String num; 
     String chars; 
     String name = ""; 
     int age = 0; 
     System.out.println("WELCOME TO Mixed Martial Art's CLUB REGISTRATION"); 

     do { 
      System.out.print("\nWhat Is Your Name:"); 
      nameChar = input.nextLine(); 
      if (nameChar.isEmpty()) 
       System.out.println("String field should not be Empty."); 
      else if (!nameChar.matches(regex)) 
       System.out.println("Please Enter A Valid String!"); 
      else if (nameChar.matches(regex)) 
       name = nameChar; 
     } while (!nameChar.matches(regex)); 

     do { 
      System.out.print("\nHow Old Are you:"); 
      num = input.nextLine(); 
      if (num.isEmpty()) 
       System.out.println("Number field should not be Empty."); 
      else if (!num.matches(regex1)) { 
       System.out.println("Please Enter A Valid Number!"); 
      } else { 
       try { 
        int ageInput = Integer.parseInt(num); 
        if (ageInput <= 18) { 
         System.out.println("Sorry But You Are Underage."); 
        } else { 
         if (ageInput <= 39) { 
          age = ageInput; 
          break; 
         } else { 
          System.out.println("Opps! You Are OVER AGE!"); 
         } 
        } 
       } catch (Exception e) { 
       } 
      } 

     } while (!num.matches(regex1)); 
     if(!name.isEmpty() && age>0){ 
      System.out.println("Thank you for registering"); 
      System.out.println("Name is "+name); 
      System.out.println("Age is"+age); 
      System.out.println("You Are Qualified"); 
     } 

    } 
}