Mega Code Archive
Join an array of strings into one delimited string
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/*
* JBoss, Home of Professional Open Source
* Copyright 2005, JBoss Inc., and individual contributors as indicated
* by the @authors tag. See the copyright.txt in the distribution for a
* full listing of individual contributors.
*
* This is free software; you can redistribute it and/or modify it
* under the terms of the GNU Lesser General Public License as
* published by the Free Software Foundation; either version 2.1 of
* the License, or (at your option) any later version.
*
* This software is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this software; if not, write to the Free
* Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
* 02110-1301 USA, or see the FSF site: http://www.fsf.org.
*/
public class Main{
/////////////////////////////////////////////////////////////////////////
// Joining/Concatenation Methods //
/////////////////////////////////////////////////////////////////////////
/**
* Join an array of strings into one delimited string.
*
* @param buff String buffered used for join (buffer is not reset).
* @param array Array of objects to join as strings.
* @param delim Delimiter to join strings with or <i>null</i>.
* @return Joined string.
*/
public static String join(final StringBuffer buff, final Object array[],
final String delim)
{
boolean haveDelim = (delim != null);
for (int i = 0; i < array.length; i++)
{
buff.append(array[i]);
// if this is the last element then don't append delim
if (haveDelim && (i + 1) < array.length)
{
buff.append(delim);
}
}
return buff.toString();
}
/**
* Join an array of strings into one delimited string.
*
* @param array Array of objects to join as strings.
* @param delim Delimiter to join strings with or <i>null</i>.
* @return Joined string.
*/
public static String join(final Object array[], final String delim)
{
return join(new StringBuffer(), array, delim);
}
/**
* Convert and join an array of objects into one string.
*
* @param array Array of objects to join as strings.
* @return Converted and joined objects.
*/
public static String join(final Object array[])
{
return join(array, null);
}
/**
* Convert and join an array of bytes into one string.
*
* @param array Array of objects to join as strings.
* @return Converted and joined objects.
*/
public static String join(final byte array[])
{
Byte bytes[] = new Byte[array.length];
for (int i = 0; i < bytes.length; i++)
{
bytes[i] = new Byte(array[i]);
}
return join(bytes, null);
}
/**
* Return a string composed of the given array.
*
* @param buff Buffer used to construct string value (not reset).
* @param array Array of objects.
* @param prefix String prefix.
* @param separator Element sepearator.
* @param suffix String suffix.
* @return String in the format of:
* prefix + n ( + separator + n+i)* + suffix.
*/
public static String join(final StringBuffer buff, final Object[] array,
final String prefix, final String separator,
final String suffix)
{
buff.append(prefix);
join(buff, array, separator);
buff.append(suffix);
return buff.toString();
}
/**
* Return a string composed of the given array.
*
* @param array Array of objects.
* @param prefix String prefix.
* @param separator Element sepearator.
* @param suffix String suffix.
* @return String in the format of:
* prefix + n ( + separator + n+i)* + suffix.
*/
public static String join(final Object[] array, final String prefix,
final String separator, final String suffix)
{
return join(new StringBuffer(), array, prefix, separator, suffix);
}
}
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