绕过嵌套条件的最佳实践之一是将它们展开为单独的检查，每个检查一个定义良好的条件（如果条件变得复杂，可以将其抽象为检查函数）。这种方法称为网关式。
因此，您的代码可能类似于：

if ( caseSensitive &&  wholeWord && matchesCaseSensitively) return file.delete()
if ( caseSensitive && !wholeWord && containsCaseSensitively) return file.delete()
if (!caseSensitive &&  wholeWord && matchesCaseSensitively) return file.delete()
if (!caseSensitive && !wholeWord && containsCaseInsensitively) return file.delete()

同样，当条件变得太复杂时，您可能希望用检查函数替换它：

if (checkingFun1()) return file.delete()

更多关于网关样式和气泡样式的信息，请点击这里：[链接]

那就不那么可读了，所以这不是一个好主意，但是下面的例子展示了如何对条件进行分组
您可以将条件分组

boolean deleteFile(String path, String searchName, boolean wholeWord, boolean caseSensitive) {
    if (caseSensitive && ((wholeWord && matchesCaseSensitively) || containsCaseSensitively)) {
        return file.delete();
    } else if ((wholeWord && matchesCaseInsensitively) || containsCaseInsensitively) {
        return file.delete();
    }
    return false;
}

甚至在一个

boolean deleteFile(String path, String searchName, boolean wholeWord, boolean caseSensitive) {
    if ((caseSensitive && ((wholeWord && matchesCaseSensitively) || containsCaseSensitively)) ||
        ((wholeWord && matchesCaseInsensitively) || containsCaseInsensitively)) {
        return file.delete();
    }
    return false;
}

这相当于：

if (wholeWord && (caseSensitive && matchesCaseSensitively || !caseSensitive && matchesCaseInsensitively) ||
    !wholeWord && (caseSensitive && containsCaseSensitively || !caseSensitive && containsCaseInsensitively)) {
    return file.delete();
}
return false;

虽然这在技术上比较简单（即圈复杂度较低），但可能不容易阅读。

你可以这样写：

boolean deleteFile(String path, String searchName, boolean wholeWord, boolean caseSensitive) {

    ...

    if ((caseSensitive && wholeWord && matchesCaseSensitively) || (caseSensitive && !wholeWord && containsCaseSensitively) || (!caseSensitive && wholeWord && matchesCaseInsensitively) || (!caseSensitive && !wholeWord && containsCaseInsensitively)
        return file.delete();       
    }

    return false;    
}

另一种方法是简化主流程，并有自己的功能来完成区分大小写和不区分大小写的工作：

...
    if (caseSensitive) {
        return deleteCaseSensitive(file, wholeWord);
    } else {
        return deleteCaseInsensitive(file, wholeWord);
    }
    ...

private boolean deleteCaseSensitive(file, wholeWord) {
    if ((wholeWord && matchesCaseSensitively) 
       || (!wholeWord && containsCaseSensitively)) {
        return file.delete();
    }

    return false;
}

private boolean deleteCaseInsensitive(file, wholeWord) {
   if ((wholeWord && matchesCaseInsensitively) 
      || (!wholeWord && containsCaseInsensitively)) {
        return file.delete();
    }

   return false;    
}