27 lines
1.0 KiB
Java
27 lines
1.0 KiB
Java
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package stream;
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import java.util.Arrays;
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import java.util.List;
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import java.util.stream.Collectors;
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public class StreamExample09 {
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public static void main(String[] args) {
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// averagingLong
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List<Long> numbers = Arrays.asList(1L, 2L, 3L, 4L, 5L);
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double averagingLongNumbers = numbers.stream()
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.collect(Collectors.averagingLong(Long::longValue));
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System.out.println("Average: " + averagingLongNumbers);
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// averagingDouble
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List<Double> averagingDoubleNumbers = Arrays.asList(1.5, 2.5, 3.5, 4.5, 5.5);
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double averagingDouble = averagingDoubleNumbers.stream()
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.collect(Collectors.averagingDouble(Double::doubleValue));
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System.out.println("Average: " + averagingDouble);
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// averagingInt
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List<Integer> averagingIntNumbers = Arrays.asList(1, 2, 3, 4, 5);
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double averagingInt = averagingIntNumbers.stream()
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.collect(Collectors.averagingInt(Integer::intValue));
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System.out.println("Average: " + averagingInt);
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}
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}
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