How to convert Java String into byte[]?

Question

Is there any way to convert Java String to a byte[] (not the boxed Byte[])?

In trying this:

System.ou         


        

Answer 1

Simply:

String abc="abcdefghight";

byte[] b = abc.getBytes();

Answer 2

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

String data = "sample data";
byte[] byteData = data.getBytes();

Answer 3

You might wanna try return new String(byteout.toByteArray(Charset.forName("UTF-8")))

Answer 4

It is not necessary to change java as a String parameter. You have to change the c code to receive a String without a pointer and in its code:

Bool DmgrGetVersion (String szVersion);

Char NewszVersion [200];
Strcpy (NewszVersion, szVersion.t_str ());
.t_str () applies to builder c ++ 2010

Answer 5

The object your method decompressGZIP() needs is a byte[].

So the basic, technical answer to the question you have asked is:

byte[] b = string.getBytes();
byte[] b = string.getBytes(Charset.forName("UTF-8"));
byte[] b = string.getBytes(StandardCharsets.UTF_8); // Java 7+ only

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However the problem you appear to be wrestling with is that this doesn't display very well. Calling toString() will just give you the default Object.toString() which is the class name + memory address. In your result [B@38ee9f13, the [B means byte[] and 38ee9f13 is the memory address, separated by an @.

For display purposes you can use:

Arrays.toString(bytes);

But this will just display as a sequence of comma-separated integers, which may or may not be what you want.

To get a readable String back from a byte[], use:

String string = new String(byte[] bytes, Charset charset);

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The reason the Charset version is favoured, is that all String objects in Java are stored internally as UTF-16. When converting to a byte[] you will get a different breakdown of bytes for the given glyphs of that String, depending upon the chosen charset.

Answer 6

  String example = "Convert Java String";
  byte[] bytes = example.getBytes();