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Java - Code Samples

 Sample 1. Sum all collection elements using Lambda Expressions

// Declare and Initialize the Collection

Set<Integer> intSet = new HashSet<Integer>();

// Add Elements

intSet.add(1);
intSet.add(2);
intSet.add(3);
intSet.add(4);

// Use the stream and collectors to sum all elements.

System.out.println(intSet.stream().collect(Collectors.summingInt(p->(Integer)p)));

   Like      Feedback     lambda expression   collections   set  hashset  generics  stream   collectors   Collectors.groupingBy



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