Java Collections

Java Collections went through a major rework in the last few releases of Java. You can now use a lambda function to describe your comparison point. If that addressed object has the built-in compareTo function (all of the standard Java objects do), then you are done.

In this case, we build a list of strings (country names) and pass that list to the Collections.sort routine. The sort routine becomes very minor, invoking the built-in compareTo functions for String in Java:

 

When we run, we can see the results in a sorted order.

There is likely a way to do this without modifying the passed-in array.

Java streams

Java streams was a significant improvement with Java 8. Now, Java is able to deal with streams of information flow in a functional manner. In this example, we will use stream in several small examples to show the power of the feature.

The code snippet we are using is as follows:

public class MyStreams { 
 
    public static void main(String[] args) { 
          List<Integer...