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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. char[] tmp = str.toCharArray();
  14. for (int i = 0; tmp.length > i; i++) {
  15. if ('a' == tmp[i]) {
  16. tmp[i] = 'k';
  17. } else
  18. if ('b' == tmp[i]) {
  19. tmp[i] = 'n';
  20. }
  21. }
  22. return new String(tmp);
  23. }
  24. }
Success #stdin #stdout 0.15s 321280KB
stdin
banana
stdout
Enter the String Name to encrypt:
nknknk