Cadena reemplazar el último personaje Java
if(fieldName.endsWith(","))
{
fieldName = fieldName.substring(0,fieldName.length() - 1);
}
Raghu Datta
if(fieldName.endsWith(","))
{
fieldName = fieldName.substring(0,fieldName.length() - 1);
}if (fieldName.endsWith(",")) {
fieldName = fieldName.substring(0, fieldName.length() - 1) + " ";
}