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  1. import java.util.Scanner;
  2. class Ideone {
  3.   public static void main(String[] args) {
  4.     Scanner input = new Scanner(System.in);
  5.     System.out.println("Enter the String Name to encrypt:");
  6.     String str = input.nextLine();
  7.     input.close();
  8.     str = replaceString(str);
  9.     System.out.println(str);
  10.   }
  11.  
  12.   public static String replaceString(String str) {
  13.     return str.replaceAll("a", "k").replaceAll("b", "n");
  14.   }
  15. }
Success #stdin #stdout 0.13s 321344KB
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apple
stdout
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Enter the String Name to encrypt:
kpple
https://ideone.com/VqAC1m
language:
Java (HotSpot 12)
created:
8 years ago
visibility:
public

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