Table of ContentsOverviewExample 1: Grouping by + CountingOutputExample: Grouping by + Counting + FilteringOutput:Example 3: Grouping by + summingIntOutput:Example 4: Grouping by + averagingLongOutput:Example 5: Multi Level Grouping by + averagingIntOutput:References Overview…

Here is java 8 stream reduce example like sum of integers using reduce() method of stream, Join stream using reduce method of stream. Table of ContentsExample 1: Stream reduce Output: Example 2: Stream reduce…

Here is java 8 stream filter example like single filter, multiple filter, filter with or condition, filter with function references, find first element using filter, find any and all match…

Here java 8 method as argument example or example of functional interface. Table of ContentsFuncationDemo.java Employee.Java Output: FuncationDemo.java package com.javadeveloperzone; import java.util.function.Predicate; import java.util.stream.Collectors; /** * Created by JavaDeveloperZone on 30-04-2017. */…