2012/04/12 BlackBerry 开发:文件操作
/**
 * 文件操作
 *
 * @author Rolex
 * @date 2011-9-28
 */
public class FileUtil {

    /**
     *
     * 将内容保存到SD卡上的文件中,如果文件不存在,则新建
     *
     * @param content
     * @return
     */
    public static boolean writeFile(String content) {     
        boolean isWrite=false;
        try {
            DataOutputStream os = null;
            FileConnection file = null;            

            file = (FileConnection) Connector.open("file:///SDCard/config.xml" , Connector.READ_WRITE);
            if(!file.exists()){
              file.create();
            }
            os = file.openDataOutputStream();
            os.write(content.getBytes());

            os.close();
            file.close();
            isWrite = true;
        }
        catch (Exception e) {
            e.printStackTrace();
        }
        return isWrite;
    }
}