29 lines
808 B
Java
29 lines
808 B
Java
// streams/FunctionMap3.java
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// (c)2016 MindView LLC: see Copyright.txt
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// We make no guarantees that this code is fit for any purpose.
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// Visit http://OnJava8.com for more book information.
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// Producing numeric output streams
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import java.util.*;
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import java.util.stream.*;
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class FunctionMap3 {
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public static void main(String[] args) {
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Stream.of("5", "7", "9")
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.mapToInt(Integer::parseInt)
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.forEach(n -> System.out.format("%d ", n));
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System.out.println();
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Stream.of("17", "19", "23")
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.mapToLong(Long::parseLong)
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.forEach(n -> System.out.format("%d ", n));
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System.out.println();
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Stream.of("17", "1.9", ".23")
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.mapToDouble(Double::parseDouble)
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.forEach(n -> System.out.format("%f ", n));
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}
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}
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/* Output:
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5 7 9
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17 19 23
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17.000000 1.900000 0.230000
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*/
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