Getting the path from a hash map key (Java)

Question

My hashmap key returns this: MemorySection[path='rr', root='YamlCofiguration']=1

Is there anyway I can get the value of path=''. I know that I can get the value of the root='' using getValue(), although I only really use this for keeping track of the highest and lowest values to then order them from highest to lowest.

I have tried this thread although the answers presume that I would know what the pair's name is. Retrieving Key from the Hash Map

EDIT: Here is how I'm setting the data and sorting it as well. I am accessing it through the likesList List

HashMap<String, Integer> likes = new HashMap<>();
for(String key: playersFile.getKeys(false)) {
                    likes.put(playersFile.getString(key), playersFile.getInt(key + ".likes"));
                }
                List<Entry<String, Integer>> likesList = new LinkedList<Entry<String, Integer>>(likes.entrySet());
                Collections.sort(likesList, new Comparator<Entry<String, Integer>>() {
                    public int compare(Entry<String, Integer> o1, Entry<String, Integer> o2) {
                        return o2.getValue() - o1.getValue();
                    }
                });
                for (int i = 0; i<45; i++) {
                    try {
                        String name1 = cookiesList.get(i).getKey();
                        item = name(name1);
                        publicinv.setItem(i, item);
                    } catch (IndexOutOfBoundsException e) {

                    }
                }

One thing you can do is to get is a `Set` of all keys in the `HashMap` by using the built-in method `.keySet()`. — kazbeel, Jun 29 '16 at 06:30
*That* is not the output of `HashMap.toString()`. Output would start with `{`, have `name=value` pairs, separated by comma, and end with `}`. — Andreas, Jun 29 '16 at 06:37
And how do you end up storing something like `"MemorySection[path='rr', root='YamlCofiguration']"` as a key of this map, and `"1"` as the value (just guessing here)? It seems you should instead have a `Map`. Show us the relevant code. — JB Nizet, Jun 29 '16 at 06:37
if you can post source of data as well, will be more easy to solve — bananas, Jun 29 '16 at 06:44
OK. So, you still haven't shown how the map is defined. But we already know it's not a Map, but a Map. The String is obtained via playersFile.getString(key). That's probably the problem: you shouldn't use getString() to get what looks like a structured object of type MemorySection. Again, we can only guess. — JB Nizet, Jun 29 '16 at 06:50
I commented it above, I'll put it in the main post so it is clear. — Max Kortge, Jun 29 '16 at 06:51
`likes.put(playersFile.getString(key), playersFile.getInt(key + ".likes"));` in this line you are putting string as a value — bananas, Jun 29 '16 at 06:55
@JBNizet I'm currently using the Spigot API so I need to use getString to access it from my config.yml. playersFile is just getting the configuration file. — Max Kortge, Jun 29 '16 at 07:01
Then your question should be tagged with spigot, should show your YAML file, should explain what you want to get from the file. — JB Nizet, Jun 29 '16 at 07:07
Although Spigot isn't the problem, it just involves Java and using hash maps. Thats what I though at least. — Max Kortge, Jun 29 '16 at 07:13
Hey Max. In your code example, where would the `MemorySection[path='rr', root='YamlCofiguration']=1` be? Is that the value of `String key` or an example of the return value from `playersFile.getString(key)`? Or something else? — sotix, Jun 29 '16 at 07:14
That is the value from String name1 = cookiesList.get(i).getKey(); — Max Kortge, Jun 29 '16 at 07:19

score 1 · Accepted Answer · answered Jun 29 '16 at 07:31

I still don't really know what you want, but here is a guess I made:

// your input
String name1 = "MemorySection[path='rr', root='YamlCofiguration']=1";
// this string indicates the start of the path
String start = "path='";
// where the path starts
int pathStart = name1.indexOf(start)+start.length();
// where the path ends
int pathEnd = name1.substring(pathStart).indexOf("'") + pathStart;
// get the path
System.out.println( name1.substring(pathStart, pathEnd) ); // prints: rr

Getting the path from a hash map key (Java)

1 Answers1