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  1. /* package whatever; // don't place package name! */
  2.  
  3. import java.util.*;
  4. import java.lang.*;
  5. import java.io.*;
  6.  
  7. /* Name of the class has to be "Main" only if the class is public. */
  8. class Ideone
  9. {
  10. 	static Scanner input = new Scanner(System.in);
  11.  
  12. 	public static void main (String[] args) throws java.lang.Exception
  13. 	{
  14. 		getUserInput();
  15. 	}
  16.  
  17. 	    static void getUserInput() {
  18.         System.out.println("enter odds or evens");
  19.         String pref = input.nextLine();
  20.         checkOption(pref);
  21.     }
  22.  
  23.     static void result(String s) {
  24.         System.out.println("You chose " + s);
  25.     }
  26.  
  27.     static void checkOption(String option) {
  28.         if (option.equalsIgnoreCase("odds") || option.equalsIgnoreCase("evens")) {
  29.             result(option);
  30.         } else {
  31.             getUserInput();
  32.         }
  33.     }
  34. }
Success #stdin #stdout 0.07s 4575232KB
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stdin
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wrong entry
another one
odds
stdout
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enter odds or evens
enter odds or evens
enter odds or evens
You chose odds
https://ideone.com/aXOtwU
language:
Java (HotSpot 12)
created:
7 years ago
visibility:
public

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