import java.util.*; class SubCipher { public static void main(String args[]) { Scanner sc=new Scanner(System.in); System.out.println(“Enter the plain text”); String pl=sc.nextLine(); pl=pl.toUpperCase(); System.out.println(pl); System.out.println(“Enter the shift factor”); int n=sc.nextInt(); System.out.println(“Cipher Text:”); char a[]= pl.toCharArray(); for(int i=0;i<a.length;i++) { a[i]=(char)(n+(int)a[i]); } for(int i=0;i<a.length;i++) { System.out.print(a[i]); } System.out.println(); } } Continue reading Substitution Cipher (Java)