Java Utililty Methods String to Byte Array

List of utility methods to do String to Byte Array

  1. HOME
  2. Java
  3. S
  4. String to Byte Array

Description

The list of methods to do String to Byte Array are organized into topic(s).

Method

byte[]getBytes(String str)
Get ascii byte array for the string provided 
try {
    return str.getBytes("US-ASCII");
} catch (UnsupportedEncodingException impossible) {
    return null;
byte[]getBytes(String str)
Should always be able convert to/from UTF-8, so encoding exceptions are converted to an Error to avoid adding throws declarations in lots of methods. 
try {
    return str.getBytes("UTF8");
} catch (java.io.UnsupportedEncodingException e) {
    throw new Error("String to UTF-8 conversion failed: " + e.getMessage());
byte[]getBytes(String str)
get Bytes 
return str.getBytes(CHARSET);
byte[]getBytes(String str)
Get the bytes with UTF-8 
if (str == null) {
    return null;
try {
    return str.getBytes("UTF-8");
} catch (UnsupportedEncodingException e) {
    e.printStackTrace();
return null;
byte[]getBytes(String str)
get Bytes 
if (str != null) {
    try {
        return str.getBytes(CHARSET_NAME);
    } catch (UnsupportedEncodingException e) {
        return null;
} else {
    return null;
...
byte[]getBytes(String str)
get Bytes 
ByteArrayOutputStream bos = new ByteArrayOutputStream();
StringTokenizer st = new StringTokenizer(str, "-", false);
while (st.hasMoreTokens()) {
    int i = Integer.parseInt(st.nextToken());
    bos.write((byte) i);
return bos.toByteArray();
byte[]getBytes(String str)
get Bytes 
byte[] bytes = str.getBytes();
try {
    bytes = str.getBytes("UTF-8");
} catch (UnsupportedEncodingException use) {
    LOGGER.severe("Exception: " + use.getMessage());
return bytes;
byte[]getBytes(String str, String charset)
get Bytes 
try {
    return str.getBytes(charset);
} catch (UnsupportedEncodingException ex) {
    throw new IllegalArgumentException(charset, ex);
byte[]getBytes(String string, String charsetName)
get Bytes 
try {
    return string.getBytes(charsetName);
} catch (UnsupportedEncodingException e) {
    e.printStackTrace();
    return null;
byte[]getBytes(String string, String encoding)
Translate the string to bytes using the given encoding 
try {
    return string.getBytes(encoding);
} catch (UnsupportedEncodingException e) {
    throw new IllegalArgumentException(encoding + " is not a known encoding name.", e);