Question

I need help writing a for each loop which searches through an array list called peoplelist of type people. The loop needs to search for the values String postcode and String name in the array. It then needs to return their ID if it is found, and null if it is not. Any sort of help would be great!

Answer 1

//In case multiple persons match :)
List<String> result = new LinkedList<String>();

for (People person : peopleList) {
  if (person.getName().equals(name) && person.getPostcode().equals(postCode))
    result.add(person.getId()); 
}

if(result.isEmpty()){
  return null;
}else{
  return result;
}