56 lines
1.6 KiB
Java
56 lines
1.6 KiB
Java
package java8interface;
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import java.util.ArrayList;
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import java.util.Comparator;
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import java.util.List;
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import java.util.Spliterator;
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/**
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* 자바8 api 에 추가된 기본 메소드들
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*
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* Iterable 의 forEach(), spliterator()
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* Collection 의 stream(), parallelStream(), removeIf(Predicate), spliterator()
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* Comparator 의 reversed(), thenComparing(), static reverseOrder() / naturalOrder()
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* static nullsFirst() / nullsLast(), static comparing()
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*/
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public class App {
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public static void main(String[] args) {
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List<String> names = new ArrayList<>();
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names.add("kim");
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names.add("lee");
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names.add("park");
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names.add("choi");
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// Comparator<String> compareToIgnoreCase = String::compareToIgnoreCase;
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// names.sort(compareToIgnoreCase.reversed());
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// names.forEach(System.out::println);
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// names.removeIf(s -> s.startsWith("k"));
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// names.forEach(System.out::println);
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// long k = names.stream().map(String::toUpperCase)
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// .filter(s -> s.startsWith("K"))
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// .count();
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// System.out.println(k);
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// names.forEach(System.out::println);
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// Spliterator<String> spliterator = names.spliterator();
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// Spliterator<String> spliterator1 = spliterator.trySplit();
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//
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// while (spliterator.tryAdvance(System.out::println));
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// System.out.println("==============================");
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// while (spliterator1.tryAdvance(System.out::println));
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// Foo foo = new Default("kim");
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//
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// foo.printName();
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// foo.printNameUpperCase();
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//
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// Foo.printHello();
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}
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}
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