String[] values = {"AB","BC","CD","AE"};boolean contains = Arrays.stream(values).anyMatch("s"::equals);
要检查的阵列是否int,double或long包含一个值使用IntStream,DoubleStream或LongStream分别。
例
Java SE 9的简要更新int[] a = {1,2,3,4};boolean contains = IntStream.of(a).anyMatch(x -> x == 4);
引用数组不好。对于这种情况,我们要紧紧追赶。从Java SE 9开始,我们有了
Set.of。
private static final Set<String> VALUES = Set.of( "AB","BC","CD","AE");
“给出String,是否有测试VALUES是否包含s的好方法?”
VALUES.contains(s)
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