Java SnakeYAML：不'；好像不行

以下是我提到的教程-

我的代码看起来像

public class Utilities {
    private static final String YAML_PATH = "/problems/src/main/resources/input.yaml";

    public static Map<String, Object> getMapFromYaml() {
        Yaml yaml = new Yaml();
        Map<String, Object> map = (Map<String, Object>) yaml.load(YAML_PATH);
        System.out.println(map);
        return map;
    }

    public static void main(String args[]) {
        getMapFromYaml();
    }
}  

当我运行程序时，我看到

Exception in thread "main" java.lang.ClassCastException: java.lang.String cannot be cast to java.util.Map
    at com.ds.utilities.Utilities.getMapFromYaml(Utilities.java:19)
    at com.ds.utilities.Utilities.main(Utilities.java:25)
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
    at java.lang.reflect.Method.invoke(Method.java:597)
    at com.intellij.rt.execution.application.AppMain.main(AppMain.java:120)

Process finished with exit code 1

如何修复此问题以使其正常工作？

它工作正常

public class RuntimeInput {
    private final Map<String, Object> RUNTIME_INPUT;

    private static final String SORTING = "sorting";
    private static final String YAML_PATH = "/src/main/resources/input.yaml";


    public RuntimeInput() {
        RUNTIME_INPUT = getMapFromYaml();
    }

    public static Map<String, Object> getMapFromYaml() {
        Yaml yaml = new Yaml();
        Reader reader = null;
        Map<String, Object> map = null;
        try {
            reader = new FileReader(YAML_PATH);
            map = (Map<String, Object>) yaml.load(reader);
        } catch (final FileNotFoundException fnfe) {
            System.err.println("We had a problem reading the YAML from the file because we couldn't find the file." + fnfe);
        } finally {
            if (null != reader) {
                try {
                    reader.close();
                } catch (final IOException ioe) {
                    System.err.println("We got the following exception trying to clean up the reader: " + ioe);
                }
            }
        }
        return map;
    }

    public Map<String, Object> getSortingDataInput() {
        return (Map<String, Object>) RUNTIME_INPUT.get(SORTING);
    }

    public static void main(String args[]) {
        RuntimeInput runtimeInput = new RuntimeInput();
        System.out.println(Arrays.asList(runtimeInput.getSortingDataInput()));
    }
}

公共类运行时输入{
私有最终映射运行时_输入；
私有静态最终字符串排序=“排序”；
私有静态最终字符串YAML_PATH=“/src/main/resources/input.YAML”；
公共运行时输入（）{
运行时输入=getMapFromYaml（）；
}
公共静态映射getMapFromYaml（）{
Yaml Yaml=新的Yaml（）；
Reader=null；
Map=null；
试一试{
reader=新文件读取器（YAML_路径）；
map=（map）yaml.load（读卡器）；
}捕获（最终文件NotFoundException fnfe）{
System.err.println（“我们从文件中读取YAML时遇到问题，因为我们找不到文件。”+fnfe）；
}最后{
if（null！=读取器）{
试一试{
reader.close（）；
}捕获（最终ioe异常ioe）{
System.err.println（“我们在清理读卡器时遇到以下异常：“+ioe”）；
}
}
}
返回图；
}
公共地图getSortingDataInput（）{
return（Map）RUNTIME_INPUT.get（排序）；
}
公共静态void main（字符串参数[]）{
RuntimeInput RuntimeInput=新的RuntimeInput（）；
System.out.println（Arrays.asList（runtimeInput.getSortingDataInput（））；
}
}

public class RuntimeInput {
    private final Map<String, Object> RUNTIME_INPUT;

    private static final String SORTING = "sorting";
    private static final String YAML_PATH = "/src/main/resources/input.yaml";


    public RuntimeInput() {
        RUNTIME_INPUT = getMapFromYaml();
    }

    public static Map<String, Object> getMapFromYaml() {
        Yaml yaml = new Yaml();
        Reader reader = null;
        Map<String, Object> map = null;
        try {
            reader = new FileReader(YAML_PATH);
            map = (Map<String, Object>) yaml.load(reader);
        } catch (final FileNotFoundException fnfe) {
            System.err.println("We had a problem reading the YAML from the file because we couldn't find the file." + fnfe);
        } finally {
            if (null != reader) {
                try {
                    reader.close();
                } catch (final IOException ioe) {
                    System.err.println("We got the following exception trying to clean up the reader: " + ioe);
                }
            }
        }
        return map;
    }

    public Map<String, Object> getSortingDataInput() {
        return (Map<String, Object>) RUNTIME_INPUT.get(SORTING);
    }

    public static void main(String args[]) {
        RuntimeInput runtimeInput = new RuntimeInput();
        System.out.println(Arrays.asList(runtimeInput.getSortingDataInput()));
    }
}