Problem to convert binary to string

[steg]

Hello,i'm new in java.now i'm working with text conversion.i'm done with conversion string to binary but i dont know how to convert the binary back to original string.below is my working code for text to binary.anyone plez help me to solve this.TQ

import java.util.*;
import java.io.*;
public class textconversion{
public static void main(String[] args) {



	//String choice = "y";
 	//while (choice.equalsIgnoreCase("y")) {       

		Scanner input = new Scanner(System.in);

		System.out.println ("Enter Message: ");
		String msg = input.nextLine();


		System.out.println ("Enter Key: ");
		String key = input.nextLine();
		int keylen = key.length();
	



		byte[] bytes2 = msg.getBytes();
  		StringBuilder binary2 = new StringBuilder();
  		for (byte b : bytes2) {
     			int val = b;
     			for (int i = 0; i < 8; i++) {
        		binary2.append((val & 128) == 0 ? 0 : 1);
        		val <<= 1;
     		}
     		binary2.append(' ');
  	}
	System.out.println();
	System.out.println();
  	//System.out.println("Your Message"+" <" + msg + "> Successfully Converted Into Binary: ");
	System.out.println();
	//System.out.println(binary2);
	
	if(keylen <= 25){
  		byte[] bytes = key.getBytes();
  		StringBuilder binary = new StringBuilder();
  		for (byte b : bytes) {
     			int val = b;
     			for (int i = 0; i < 8; i++) {
        			binary.append((val & 128) == 0 ? 0 : 1);
        			val <<= 1;
     			}
     			binary.append(' ');
  		}
		System.out.println();
		System.out.println();
  		System.out.println("Your Key"+" <" + key + "> Successfully Converted Into Binary: ");
		System.out.println();
		System.out.println(binary);

	
	
	
	//}

		}
			}
				}

[EINSTEIN_007]

When you store Binary data into table, it does some encryption and then saves encrypted data to table, convert and Cast definitely won't work in this case, so how come SQL converts encrypted data to string without knowing the key? You have to find someother way to decrypt the binary data and then convert/cast.