We can combine the improved speed of the HashSet above with the speed and efficiency of a Java Stream to create a very succinct mechanism. That is how the code below removes duplicates from the Java ...

If you look closely, it is also clear that this code does not pass the “is a” test. Now let’s try the same example using composition: import java.util.HashSet; import java.util.Set ...

For example, the following code used in the tutorial overrides the JDK's standard ... import java.util.HashMap; import java.util.HashSet; public class HashAndProperty { int hashcode; String property; ...