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UnaryOperator interface

Java

Last updated at 2023-01-16Posted at 2023-01-13

given argument, return が同じtype
default void replaceAll(UnaryOperator operator)と組み合わせて使用
するサンプルも載せる

        UnaryOperator<String> u = (x) -> x + ",";
        System.out.println(u.apply("3"));
        
        ArrayList<String> l = new ArrayList<>();
        l.add("1");
        l.add("2");
        l.replaceAll(u);
        for(String str:l){
            System.out.println(str);
        }

3,
1,
2,

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