This post originated from an RSS feed registered with Java Buzz by News Manager. Original Post: Uses and limitations of the Stream API in Java 8 Feed Title: JavaWorld Feed URL: http://www.javaworld.com/index.rss Feed Description: JavaWorld.com: Fueling Innovation Latest Java Buzz Posts Latest Java Buzz Posts by News Manager Latest Posts From JavaWorld

The Stream API in JDK 8 promises to bring a lot of expressive power to the Java language. However, the API and the framework do have some limitations. Compared to frameworks in other languages, some key features are missing, including stateless lambda expressions.

Software Engineering blogger David Hartveld rounds out his series of three posts focusing on Java 8 with one introducing the Stream API, demonstrating its extensive use of lambda expressions. Here, he compares a pre-Java 8 for-loop:

List<Block> blocks = /* ... */;
 
int sumOfWeights = 0;
for (Block block : blocks) {
  if (block.getColor() == Color.RED) {
    sumOfWeights += block.getWeight();
  }
}

to one expressed with the JDK 8 Stream API:

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