How to get a list of specific fields values from objects stored in a list?

Question

Say I have an list of objects with two fields field1 and field2, both of String type.

How do I get a list of all field1 values wit

Answer 1

try this:

List entities = getEntities();
List listIntegerEntities = Lambda.extract(entities, Lambda.on(Entity.class).getFielf1());

the LambdaJ allows to access collections without explicit loops, so instead of have more lines of code to iterate the list yourself, you let LambdaJ do it.