Java - map a list of objects to a list with values of their property attributes

Question

I have the ViewValue class defined as follows:

class ViewValue {

private Long id;
private Integer value;
private String description;
private View view;
priv         


        

Answer 1

We can do it in a single line of code using java 8

List ids = viewValues.stream().map(ViewValue::getId).collect(Collectors.toList());

For more info : Java 8 - Streams