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Stream是数据渠道,用于操作集合、数组等生成的元素序列。Stream操作的三个步骤:创建Stream中间操作终止操作一、获取stream的四种方式通过collection系列集合的stream()或parallelStream()获取。@Testvoid test11(){ List<String> list = new ArrayList<>(); Stream<String> stringStream = list.stream();}通过Arrays中的静态方法stream()获取数组流。@Testvoid test11(){ Person[] person = new Person[10]; Arrays.stream(person);}通过Stream中的静态方法of()。@Testvoid test11(){ Stream<String> stream = Stream.of("a", "b", "c");}创建无限流/** * 迭代 */@Testvoid test11(){ Stream<Integer> integerStream = Stream.iterate(0, x -> x + 2);}/** * 生成 */@Testvoid test11(){ Stream.generate(() -> Math.random());}
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