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up vote -2 down vote favorite

Is there any way to convert Java String to byte[] array?

Note: Its byte[] array and not the wrapper Byte[].

In trying this:

System.out.println(response.split("\r\n\r\n")[1]);
System.out.println("******");
System.out.println(response.split("\r\n\r\n")[1].getBytes().toString());

And Im getting seperate outputs. Unable to display 1st output as it is a gzip string.

<A Gzip String>
******
[B@38ee9f13

The second is an address. Is there anything I'm doing wrong? I need the result in byte[] array to feed it to gzip decompressor, which is as follows.

String decompressGZIP(byte[] gzip) throws IOException {
    java.util.zip.Inflater inf = new java.util.zip.Inflater();
    java.io.ByteArrayInputStream bytein = new java.io.ByteArrayInputStream(gzip);
    java.util.zip.GZIPInputStream gzin = new java.util.zip.GZIPInputStream(bytein);
    java.io.ByteArrayOutputStream byteout = new java.io.ByteArrayOutputStream();
    int res = 0;
    byte buf[] = new byte[1024];
    while (res >= 0) {
        res = gzin.read(buf, 0, buf.length);
        if (res > 0) {
            byteout.write(buf, 0, res);
        }
    }
    byte uncompressed[] = byteout.toByteArray();
    return (uncompressed.toString());
}
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2  
stackoverflow.com/questions/5499924/… –  Paddyd Sep 2 at 10:41
 
Sorry, I'm trying to convert a String to bytearray and back and getting a wrong result. I'll edit it in a while and get back. –  Mkl Rjv Sep 2 at 10:54
2  
Your problem is that String.getBytes() does indeed return a byte array, but your belief that the toString() of a byte array will return a useful result is incorrect. –  Louis Wasserman Sep 2 at 20:32

6 Answers

up vote 1 down vote

It's simply

byte[] byteArray = yourString.getBytes();

You can see javadoc

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up vote 0 down vote 
  String example = "Convert Java String";
  byte[] bytes = example.getBytes();
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up vote 0 down vote 
byte[] b = string.getBytes();
byte[] b = string.getBytes(Charset.forName("UTF-8"));
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up vote 0 down vote

You can use String.getBytes() which returns the byte[] array.

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up vote 0 down vote

Try using String.getBytes(). It returns a byte[] representing string data. Example:

String data = "sample data";
byte[] byteData = data.getBytes();
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up vote 0 down vote

simply do it by

String abc="abcdefghight";

byte[] b = abc.getBytes();

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