Iterator lDocbaseAttributeIt1 = mDocattrLst.getContainedControls();
while (lDocbaseAttributeIt1.hasNext()) {
Object obj = lDocbaseAttributeIt1.next();
//Put a check for required type
if(obj instanceof DocbaseAttribute){
DocbaseAttribute lDocbaseAttribute = (DocbaseAttribute)obj;
if (lDocbaseAttribute.getAttribute().equals("somattrname")) {
// Below is your value
System.out.println("the value is"+ lDocbaseAttribute.getValue());
}
}
}