如何处理 "final fields may not have been initialized" 多个静态变量的问题？

Question

在这段代码中，如果我将 'final' 添加到变量定义中，我将收到 "the final fields may have not been initialized" 错误。 Statckoverflow 上的一些建议解决方案倾向于为 return 值创建静态函数。但是，在这种情况下，我需要创建四个不同的函数来执行此操作。这个问题有没有更优雅的解决方案？

private static String MODEL_PATH;
private static String VECTORS_PATH;
private static String NEG_PATH;
private static String POS_PATH;

static {
    try {
        MODEL_PATH = new ClassPathResource("models/word2vec_model").getFile().getAbsolutePath();
        VECTORS_PATH = new ClassPathResource("models/model.zip").getFile().getAbsolutePath();
        NEG_PATH = new ClassPathResource("models/neg.txt").getFile().getAbsolutePath();
        POS_PATH = new ClassPathResource("models/pos.txt").getFile().getAbsolutePath();
    } catch (Exception e) {
        e.printStackTrace();
    }
}

Answer 1

However, in this case I need to create four different functions to do that.

由于您基本上在做同样的事情，但资源名称不同，因此一种方法就足够了：

private static String getResourceByName(string path) {
    try {
        return ClassPathResource(path).getFile().getAbsolutePath();
    } catch (Exception e) {
        e.printStackTrace();
        return null;
    }
}

现在您可以在初始化中使用相同的方法四次：

private static final String MODEL_PATH = getResourceByName("models/word2vec_model");
private static final String VECTORS_PATH = getResourceByName("models/model.zip");
private static final String NEG_PATH = getResourceByName("models/neg.txt");
private static final String POS_PATH = getResourceByName("models/pos.txt");

如何处理 "final fields may not have been initialized" 多个静态变量的问题？

How to deal with "final fields may not have been initialized" issue with multiple static variables?

java

static

final