Assume that you have an existing mutable class,MutableCircle, that represents a circle. Because of the thread-safety advantages of an immutable object, you want to let other code access an object of this class as an immutable object. The originalMutableCircleclass looks like this: class Mutable...
datus enables you to define a conversion process between two data structures in a fluent functional API. Define conditional processing, do some business relevant work or just pass values from a to b - just about everything is possible for both mutable and immutable data structures. ...
public MyData (String... aStr) { Arrays.stream(aStr).forEach(list::add); } public List<String> getList () { //return the copy return new ArrayList<>(list); } } Copy the external mutable collection which is passed in the constructor: import java.util.ArrayList; import java.util.Arra...