此规范化功能如何工作？

Question

我正在做一个Junit教程，遇到了正在测试的标准化函数。定义如下：

 public static String normalizeWord(String word) {
        try {
            int i;
            Class<?> normalizerClass = Class.forName("java.text.Normalizer");
            Class<?> normalizerFormClass = null;
            Class<?>[] nestedClasses = normalizerClass.getDeclaredClasses();
            for (i = 0; i < nestedClasses.length; i++) {
                Class<?> nestedClass = nestedClasses[i];
                if (nestedClass.getName().equals("java.text.Normalizer$Form")) {
                    normalizerFormClass = nestedClass;
                }
            }
            assert normalizerFormClass.isEnum();
            Method methodNormalize = normalizerClass.getDeclaredMethod(
                                                            "normalize",
                                                            CharSequence.class,
                                                            normalizerFormClass);
            Object nfcNormalization = null;
            Object[] constants = normalizerFormClass.getEnumConstants();
            for (i = 0; i < constants.length; i++) {
                Object constant = constants[i];
                if (constant.toString().equals("NFC")) {
                    nfcNormalization = constant;
                }
            }
            return (String) methodNormalize.invoke(null, word, nfcNormalization);
        } catch (Exception ex) {
            return null;
        }
    }

此功能如何工作？它实际上在做什么？

Answer 1

它与以下功能相同：

import java.text.Normalizer;

try {
    return Normalizer.normalize(word, Normalizer.Form.NFC);
} catch (Exception ex) {
    return null;
}

除了所有操作都是通过反射执行的。