How to convert a binary representation of a string into byte in Java?

Question

as the title says, how do I do it? Its easy to convert from string -> byte -> string binary, But how do I convert back? Below is a example. The output is : \'f\' to binary:

Answer 1

I made like this, converted a string s -> byte[] and then used Integer.toBinaryString to get binaryStringRep. I converted bianryStringRep by using Byte.parseByte to get the bianryStringRep into byte and the String(newByte[]) to get the byte[] into a String! Hope it helps others then me aswell! ^^

public class main{
    public static void main(String[] args) throws UnsupportedEncodingException {

         String s = "foo";
          byte[] bytes = s.getBytes();
          byte[] newBytes = new byte[s.getBytes().length];
          for(int i = 0; i < bytes.length; i++){
              String binaryStringRep = String.format("%8s", Integer.toBinaryString(bytes[i] & 0xFF)).replace(' ', '0');
              byte newByte = Byte.parseByte(binaryStringRep, 2);
              newBytes[i] = newByte;
          }

        String str = new String(newBytes, "UTF-8");
        System.out.println(str);
    }
}