Binary to text in Java
You can use Integer.parseInt
with a radix of 2 (binary) to convert the binary string to an integer:
int charCode = Integer.parseInt(info, 2);
Then if you want the corresponding character as a string:
String str = new Character((char)charCode).toString();
I know the OP stated that their binary was in a String
format but for the sake of completeness I thought I would add a solution to convert directly from a byte[]
to an alphabetic String representation.
As casablanca stated you basically need to obtain the numerical representation of the alphabetic character. If you are trying to convert anything longer than a single character it will probably come as a byte[]
and instead of converting that to a string and then using a for loop to append the characters of each byte
you can use ByteBuffer and CharBuffer to do the lifting for you:
public static String bytesToAlphabeticString(byte[] bytes) {
CharBuffer cb = ByteBuffer.wrap(bytes).asCharBuffer();
return cb.toString();
}
N.B. Uses UTF char set
Alternatively using the String constructor:
String text = new String(bytes, 0, bytes.length, "ASCII");
This is my one (Working fine on Java 8):
String input = "01110100"; // Binary input as String
StringBuilder sb = new StringBuilder(); // Some place to store the chars
Arrays.stream( // Create a Stream
input.split("(?<=\\G.{8})") // Splits the input string into 8-char-sections (Since a char has 8 bits = 1 byte)
).forEach(s -> // Go through each 8-char-section...
sb.append((char) Integer.parseInt(s, 2)) // ...and turn it into an int and then to a char
);
String output = sb.toString(); // Output text (t)
and the compressed method printing to console:
Arrays.stream(input.split("(?<=\\G.{8})")).forEach(s -> System.out.print((char) Integer.parseInt(s, 2)));
System.out.print('\n');
I am sure there are "better" ways to do this but this is the smallest one you can probably get.