Question

The question is in comments in the code, I thought that’d be an easier way to ask…

Easy question, but I can’t seem to find an answer. I want to convert a String to it’s byte[] (easy, String.getBytes()). Then I want to convert a String of bytes (101011010101001 for example) to a byte[] and get the String value of that (that’s easy too: new String(byte[]))

Here’s what I’ve got so far:

Scanner scan = new Scanner(System.in);
String string = scan.nextLine();
String byteString = "";
for (byte b : string.getBytes()) {
  byteString += b;
}
System.out.println(byteString);

//This isn't exactly how it works, these two parts in separate methods, but you get the idea...

String byteString = scan.nextLine();
byte[] bytes = byteString.literalToBytes() //<== or something like that...
//The line above is pretty much all I need...
String string = new String(bytes);
System.out.println(string);

Answer 1

Alright, because the commenter who pointed me to this question (which lead me to this answer) isn’t going to answer, I’ll just post the solution here:

Scanner scan = new Scanner(System.in);
String pass = scan.nextLine();
StringBuilder byteString = new StringBuilder();
for (byte b : pass.getBytes()) {
  b = (byte) (b);
  byteString.append(b).append(","); //appending that comma is what does the trick.
}
System.out.println(byteString);
//
String[] split = byteString.toString().split(","); //splitting by that comma is what does the trick... too...
byte[] bytes = new byte[split.length];
for (int i = 0; i < split.length; i++) {
  bytes[i] = (byte) (Byte.valueOf(split[i]).byteValue());
}
System.out.println(new String(bytes));