arrayToString

原文:http://leepoint.net/notes-java/data/strings/96string_examples/example_arrayToString.html

	/**
	 *  Convert an array of strings to one string.
	 *  Put the 'separator' string between each element.
	 * @param a
	 * @param separator
	 * @return
	 */
	public static String arrayToString(String[] a, String separator) {
	    StringBuffer result = new StringBuffer();
	    if(a==null){
	    	return "";
	    }
	    if (a.length > 0) {
	        result.append(a[0]);
	        for (int i=1; i<a.length; i++) {
	            result.append(separator);
	            result.append(a[i]);
	        }
	    }
	    return result.toString();
	}