day20201124 -- java快速生成map

使用guava工具类。

        <dependency>
            <groupId>com.google.guava</groupId>
            <artifactId>guava</artifactId>
            <version>30.0-jre</version>
        </dependency>

 

        Map<String, String> build = ImmutableMap.<String, String>builder().put("a,", "b").put("c,", "d").put("e,", "f").put("g,", "h").build();
        System.out.println(build);