how to convert string to byte in java?

Question

How to make string "01001000"(for example) to byte and convert it to string.

Example :

if string = "0110000101100010" then output must be "ab"

because a == 01100001 and b == 01100010

www.google.com/search?q=binary+string+to+byte

Hannesh
– Hannesh

2011-08-31 13:20:11 +00:00
Commented Aug 31, 2011 at 13:20 — Hannesh
– Hannesh, Commented Aug 31, 2011 at 13:20

oliholz · Accepted Answer · 2011-08-31 13:24:23Z

4

something like this:

      String[] array = {"01100001","01100010"};
      StringBuilder sb = new StringBuilder();
      for( String string : array ) {
          sb.append( (char)Integer.parseInt( string, 2 ) );
      }

or if you have one String which has exact 8-bit * x letter.

    String source = "0110000101100010";
    StringBuilder sb = new StringBuilder();
    for( int i = 0; i < source.length(); i= i+8 ) {
        sb.append( (char)Integer.parseInt( source.substring( i, i+8 ), 2 ) );
    }

answered Aug 31, 2011 at 13:24

oliholz

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Comments

score 1 · Accepted Answer · 2011-08-31 13:38:53Z

1

StringBuilder sb = new StringBuilder();
for(String str : "0110000101100010".split("(?<=\\G.{8})")){
    sb.append((char)Byte.parseByte(str,2));
}
System.out.println(sb.toString());

Will output --> ab

edited Aug 31, 2011 at 13:38

answered Aug 31, 2011 at 13:30

user425367

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