Scanner sc=new Scanner (system.in);
System.out.println ("The content to be decrypted is");
String str=sc.nextline ();//Enter the contents before decryption
System.out.print ("Your content is decrypted after:" +str.replaceall ("A", "C"). ReplaceAll ("B", "D"). ReplaceAll ("C", "E")
. ReplaceAll ("D", "F"). ReplaceAll ("E", "G"). ReplaceAll ("F", "H"). ReplaceAll ("G", "I"). ReplaceAll ("H", "J")
. ReplaceAll ("I", "K"). ReplaceAll ("J", "L"). ReplaceAll ("K", "M"). ReplaceAll ("L", "N"). ReplaceAll ("M", "O")
. ReplaceAll ("N", "P"). ReplaceAll ("O", "Q"). ReplaceAll ("P", "R"). ReplaceAll ("Q", "S"). ReplaceAll ("R", "T")
. ReplaceAll ("S", "U"). ReplaceAll ("T", "V"). ReplaceAll ("U", "W"). ReplaceAll ("V", "X"). ReplaceAll ("W", "Y")
. ReplaceAll ("X", "Z"). ReplaceAll ("Y", "a"). ReplaceAll ("Z", "B"));//decrypted content
Character text encryption and decryption are implemented by using the character shift method.