Design Patterns and Best Practices in Java

Enhancements in streams

Java 8 brought us the wonderful feature of streams, which has helped operations on lists and sets of data very easily and efficiently. Java 9 has further enhanced the usage of streams to make them more useful. Here we will discuss important enhancements in streams:

• Takewhile: Java 8 gave us a filter that would check each element against a filter condition. For example, suppose from a stream we need all numbers less than 20. There may be a case where we want the list of all the numbers before we meet the condition and ignore the rest of the input. That is, when the first time filter condition is breached, ignore the rest of the input, and something such as the return or exit command is executed.

The following code ...