NS-Lab/SystemLog/ceaser cipher

package NS1;
import java.util.Scanner;
/*
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 * To change this template file, choose Tools | Templates
 * and open the template in the editor.
 */

/**
 *
 * @author Mohit Lokhande
 */



public class NS1 {
	public static void main(String []args) {
		
		
		@SuppressWarnings("resource")
		Scanner in = new Scanner(System.in);
		String input;
		
        int key;
        String lib = "0123456789";
        char[] stringtoarray = lib.toCharArray();
        
        System.out.println("ENTER THE STRING YOU WANT TO ENCRYPT:");
        
        input = in.nextLine();
        char[] cipher = input.toCharArray();
        
        
        
        System.out.println("\nENTER THE KEY:");
        key = Integer.parseInt(in.nextLine());        
     
        
        
        
        //for encryption
        System.out.println("\nENCRYPTED TEXT IS:");
        for(int i = 0; i< cipher.length; i++)
        {
            for(int j = 0; j< stringtoarray.length; j++)
            {
                if (cipher[i] == stringtoarray[j])
                {
                    cipher[i] = stringtoarray[(j + key) % 10];
                    break;
                }
                
            }
            System.out.print(cipher[i]);
        }
        
        
        
        
        //for decryption
        System.out.println("\n\nDECRYPTED TEXT OR COMBINATION IS:");
        for(int k=0;k<36;k++)
        {
        	for(int i=0;i<cipher.length;i++)
        		for (int j = 0; j < stringtoarray.length; j++)
        			if(cipher[i]==stringtoarray[j])
        			{ 
        				System.out.print(stringtoarray[(j+k)%10]);
        				break;
        			}
        	 System.out.println("\t");
        }
        
        
        
	}

	
}