How-to articles, tricks, and solutions about JAVA-STREAM

To find the first element in a list that matches a certain condition, you can use the stream() method to create a stream from the list, and then use the filter() method to specify the condition that the element should satisfy. Finally, you can use the fin

To convert a Java 8 Stream to an array, you can use the toArray() method of the Stream interface.

You can use the reduce() operation in the Java Streams API to sum the elements of a list of integers.

To use a Java 8 lambda to sort a stream in reverse order, you can use the sorted() method of the Stream interface and pass a lambda function that compares the elements in reverse order.

To get a list of distinct elements by a property in Java 8, you can use the distinct() method of the Stream interface and the map() method to extract the property from each element.

In Java 8, the Iterable.forEach() method is a default method that allows you to iterate over the elements of an Iterable (such as a List or Set) and perform a specific action on each element.

To convert a List<V> into a Map<K, V> in Java 8, you can use the toMap() method of the Collectors class from the java.util.stream package.

You can use the map and collect methods of the Stream class to achieve this.

In Java 8, the map() and flatMap() methods are part of the Stream API, and are used to transform the elements of a stream.