using hashmaps to traverse hashmaps

[raven flume]

Basically working on a translating program, I have created a hashmap called SpanishToEnglish which holds english translations for spanish, now the problem is I have it working but if a user wants to type in a english translation it won't work because ``` String result3 = spanishToEnglish.get(input);
String result = englishToGerman.get(result3);
String result2 = englishToFrench.get(result3);

it will only work if input is a spanish word and the other 2 need result3, is there anyway to do this so I can get a user to translate from english to other languages and from spanish to all other languages

[tiny notch]

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[tiny notch]

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[raven flume]

    private void fillEnglishToSpanish() {
        spanishToEnglish.put("hola", "hello");
        spanishToEnglish.put("usted", "you");
        spanishToEnglish.put("cerveza", "cerveza");
        spanishToEnglish.put("table", "mesa");
        spanishToEnglish.put("silla", "chair");
        spanishToEnglish.put("yo", "i");
        spanishToEnglish.put("la/le", "the");
        spanishToEnglish.put("no poder", "cannot");
        spanishToEnglish.put("monitora", "monitor");
        spanishToEnglish.put("trabaja", "work");
        spanishToEnglish.put("embutido", "saussage");

[tiny notch]

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[raven flume]

here is my spanish to english hashmap

    private void fillEnglishToFrench() {
        englishToFrench.put("hello", "salut");
        englishToFrench.put("you", "vous");
        englishToFrench.put("beer", "bière");
        englishToFrench.put("table", "tableau");
        englishToFrench.put("chair", "chaise");
        englishToFrench.put("i", "je");
        englishToFrench.put("the", "la/le");
        englishToFrench.put("cannot", "ne peux pas");
        englishToFrench.put("monitor", "surveiller");
    }

    private void fillEnglishToGerman() {
        englishToGerman.put("hello", "hallo");
        englishToGerman.put("saussage", "wurst");
        englishToGerman.put("beer", "bier");
        englishToGerman.put("table", "tisch");
        englishToGerman.put("chair", "stuhl");
        englishToGerman.put("i", "ich");
        englishToGerman.put("you", "du/sie");
        englishToGerman.put("the", "der/die/das");
        englishToGerman.put("work", "arbeit");  ```

[tiny notch]

Detected code, here are some useful tools:

[raven flume]

others for contex

context *

is there a way to put 2 values in the .get

so i could put like .get(input OR result3)

something like that?

[sour stump]

I dont quite get what you want, sorry

[raven flume]

basically

need to translate from spanish to english, then english to german and french

sorry for being confusing

thats it summed up

[calm sun]

The JDK does not have this but you can use Google Guava's BiMap

[raven flume]

gotta use hashmaps

[sour stump]

you can make multiple maps

that is how you would usually do that

[calm sun]

https://www.baeldung.com/guava-bimap

[sour stump]

EN to GER, GER to EN, EN to FR, FR to EN....

[raven flume]

can I do that with hashmaps?

[sour stump]

Best thing would be to pick a main language

[raven flume]

english

then create a map with 3 values?

[sour stump]

and have a hash map that translates from this language into every other and one for every other to translate into this

like you pick english

[raven flume]

i've done that have I not

[sour stump]

you would need to translate from GER to EN, FR to EN, SP to EN
And you would do EN to GER, EN to FR and EN to SP

[raven flume]

right, so multiple hashmaps with keys and values switched

[sour stump]

yes

[raven flume]

is there any way

to do it with the 3 i have?

[sour stump]

spanish to english, english to german and english to french?

[raven flume]

yeah,

[lean wharf]

Create a map for each language conversion

[sour stump]

those 3 will only ever be able to translate spanish to english, german or french or english to german or french

if you want to go backwards, you will need new maps

[raven flume]

right

is there any possibility

I could make a if statement

such as if the user input = spanish word, it uses ```String result3 = spanishToEnglish.get(input);
String result = englishToGerman.get(result3);
String result2 = englishToFrench.get(result3);

[sour stump]

you can chain them with the get method

[raven flume]

and if user input = english word ```String result3 = spanishToEnglish.get(input);
String result = englishToGerman.get(input);
String result2 = englishToFrench.get(input);

[tiny notch]

Detected code, here are some useful tools:

Formatted code

String result3 = spanishToEnglish.get(input);
String result = englishToGerman.get(input);
String result2 = englishToFrench.get(input);

[raven flume]

chain them?

[sour stump]

englishToGerman.get(spanishToEnglish.get("Holla")));

[raven flume]

ok

Right

that does work

is there a way

wait no

its inpractiacle

since i have a tonne of keys

[sour stump]

just ask 😄

[raven flume]

I'm just so stuck...

i need to make this work

with 3 hashmaps

I could do it with other things, but it has to be 3 hashmaps for some odd reason

[sour stump]

what is the task anyway?

are the 3 hashmaps given?

[raven flume]

create a translation program

no

created them

[sour stump]

specific?

[raven flume]

as in specific languages/

?*

[sour stump]

no what exactly is your task?

[raven flume]

theres been 3 tasks

1 was to create it and make it so you could translate from english into french

then french and german for task 2 with unqiue words

now im on task 3

which I've got working

but it means task 1 + 2 is not working

[sour stump]

and task 3 is?

[raven flume]

translating from spanish to english, then english to german/frenvh

[sour stump]

btw what is the language you study in? french, german, english, spanish?

[raven flume]

english

main language

[sour stump]

then your professor probably wants you to use english as a default

[raven flume]

yup

exactly,

but he wants us to achieve this with 3 hashmaps

[sour stump]

so your tasks are:

1. create a translation program that translates from english to french
2. translate from french to german
3. translate from spanish to english and from english to german or french

and do all that with 3 hashmaps

[raven flume]

nono, just english to french + german

only from spanish into the other languages

[sour stump]

then copy my message and correct it please, because I am confused

[raven flume]

thats all to be done with 3 hashmaps

[raven flume]

so your tasks are:

1. create a translation program that translates from english to french
2. translates from english to french AND german
3. translate from spanish to english and from english to german or french

thats to be done with 3 hashmaps

[sour stump]

how do you translate from english to french AND german at the same time?

spanish to english
english to french
english to german
with these 3 maps you should be able to do all of them.

[raven flume]

right,

which

it does work

but it doesn't work if a user wants to translate a english word

into french or german

[sour stump]

well yes, you got a hash map that deals with english words

all you need to do is access the right map

[calm sun]

It will work but you will have to traverse through the values() of the map

[sour stump]

but you cannot traverse a hashmap

all you can do is use the containsKey() method

[raven flume]

and then manually

write each one?

[calm sun]

sure you can. map.values() returns a collection

[raven flume]

does map. work with hashmap?

[calm sun]

it won't be as fast as a hashmap

yep, it is part of the Map interface

https://devdocs.io/openjdk~19/java.base/java/util/map#values()

[sour stump]

if it is that what you want, containsKey() does it faster. 🤷‍♂️

or rather easier to write

[calm sun]

it would be containsValue() right?

but that just returns boolean, then you have to find it

[sour stump]

in englishtoGerman the input would be a word in english. to check if you even have that in your map you use containsKey().

[ruby coral]

here is a way

[sour stump]

you can check all 3 of them and translate.

[calm sun]

i thought the question was searching for the value instead

containsKey() would only give you one side

[ruby coral]

enum Language {
   EN,
   DE,
   FR
}

HashMap<String, HashMap<Language, String>> translationMap = new HashMap<>();

[sour stump]

OP is quite vage. But the key side is all you need. if you cannot control with language the user puts in, you have no choice but to check all maps for the key

[calm sun]

But what is the key in your example. Is it in EN, DE, or FR?

sounds like they want to search for Hello or Hola or ???

[sour stump]

if practice the user would need to select the language they enter and the language they want. there are just too many words in several languages with different meanings in either.

[raven flume]

yes this

[sour stump]

that is fancy, but I think it is too high level for OP

[ruby coral]

okay so here is the concept

there is a "key"

so like "hello"

and then you look up how to say that thing in the language of your choice

[raven flume]

https://i.gyazo.com/21ce0a1928427e25c00d5223e894de47.png

[ruby coral]

ah okay nvm

his requirements are different

interesting

[sour stump]

so you do exactly what I suggested 😄

[raven flume]

yeah

.containKey?

.Contain

[sour stump]

there is something missing from the bottom

[raven flume]

yeah just gettnig it

https://i.gyazo.com/9dd98ca501eb7084ff3edb02749bc3f4.png

[sour stump]

ohhh

[raven flume]

https://i.gyazo.com/8db71ea1b556fb8c7b8da8462e6d970d.png

[sour stump]

well, thanks for finally posting it 😄

finding the right hashmap was never the issue since you are supposed to use them all sequencially anyway

and make 3 printout statements

[raven flume]

if(result !=  null && result2 != null && result3 != null ) {
            return "GERMAN: " + result + "\nFRENCH: " + result2 + "\nENGLISH: " + result3; }
        
        else if (result != null && result2 != null) {
            return "GERMAN: " +  result + "\nFRENCH: " +  result2; }
        
        else if (result2 != null && result3 != null) { 
            return "FRENCH: " + result2 + "\nENGLISH: " + result3; }
        
        else if (result != null && result3!= null) {
            return "GERMAN: " +  result + "\nENGLISH: " + result3;
        }
        
        else if (result != null ) {
            return "GERMAN: " +  result; }
        
        else if (result2 != null ) {
            return "FRENCH: " + result2;}
        
        else if (result3 != null) {
            return "ENGLISH: " + result3; }

[tiny notch]

Detected code, here are some useful tools:

[raven flume]

my print statements lmao

extremely messy

and probably the worst possible way you could do it

[sour stump]

well you can start by renaming the results properly so you see what they are at a glance

other than that. why do you check for null so often?

[raven flume]

so that when it displays I don't get a null message

if there is no translation

since we had to use unique words

[sour stump]

you make the maps, you make the translations. Check if spanishToEnglish.containsKey(input) that returns a boolean, if true, there will not be a null error

if you make sure to translate every word in every language, there will be no other null problems

[raven flume]

but spanishToEnglish.containsKey(input)

how does it work,

so a if (spanishToEnglish.containsKey(input)) {

  return "GERMAN" + result }

like that?

[sour stump]

if it contains the key, do all your print outs

no need for aditional if statements

[ruby coral]

so your problem is actually a graph problem btw

[sour stump]

just make sure you translate every spanish key into every language and enter it in every hashmap

[raven flume]

right wait

how do I do that

spanish key into every language

can i make a hashmap have 3 values?

wait no

[sour stump]

you take a spanish word, translate it into english and put it into the map. then you take the english word and translate it into german and french and make a corresponding entry in the other maps

[raven flume]

right,

but im confused

what do you mean put it into the map?

        spanishToEnglish.put("hola", "hello");
        spanishToEnglish.put("usted", "you");
        spanishToEnglish.put("cerveza", "cerveza");
        spanishToEnglish.put("table", "mesa");
        spanishToEnglish.put("silla", "chair");
        spanishToEnglish.put("yo", "i");
        spanishToEnglish.put("la/le", "the");
        spanishToEnglish.put("no poder", "cannot");
        spanishToEnglish.put("monitora", "monitor");
        spanishToEnglish.put("trabaja", "work");
        spanishToEnglish.put("embutido", "saussage");
        

[tiny notch]

Detected code, here are some useful tools:

[sour stump]

I mean use the put method to extend the map with a new translation pair

spanishToEnglish.put("embutido", "saussage");

like this

[raven flume]

I can't find any thing online on how to extend a hashmap with user input

[sour stump]

why would you want to extend it with user input?

[raven flume]

sorry im super confused

havent' I already done this?

[sour stump]

done what?

[raven flume]

you take a spanish word, translate it into english and put it into the map. then you take the english word and translate it into german and french and

""

i've done that

[sour stump]

then I do not know what you even want.

you know how to do it

you know the syntax

what is your question?

[raven flume]

time to maybe rephrase the question,

is there a way make like a if statement

if the user chooses a english word to translate

or a spanish word to translate

[sour stump]

depends if the user will select a language or if you want to derive it from the input

[raven flume]

derive from input

[sour stump]

then you can make something like this

if (englishToGerman.containsKey(input)) {
//do the translation
} else if (spanishToEnglish.containsKey(input)) {
//do other translation
}```

[tiny notch]

Detected code, here are some useful tools:

[raven flume]

yeah

thats what im doing

rn

right

ok good

this might be it

[sour stump]

😄

always be clear on what you want.

this can be done very quickly

[raven flume]

this couldve been done way quicker if i wasn't forced to use 3 flipping hashmaps

right

thats it

Thank you so much man

apologies for wasting ur time

and being complicated

        if (spanishToEnglish.containsKey(input))
        {
            String result3 = spanishToEnglish.get(input);
            String result = englishToGerman.get(result3);
            String result2 = englishToFrench.get(result3);
            
            return "GERMAN: " + result + "\nFRENCH: " + result2 + "\nENGLISH: " + result3; } 
        
        else if (englishToGerman.containsKey(input))
        {
            
            String result = englishToGerman.get(input);
            String result2 = englishToFrench.get(input);
            
            return "GERMAN: " + result + "\nFRENCH: " + result2; }
        
        else if (englishToGerman.containsKey(input))
        { 
            String result = englishToGerman.get(input);
            String result2 = englishToFrench.get(input);
            return "GERMAN: " + result + "\nFRENCH: " + result2; }

[tiny notch]

Detected code, here are some useful tools:

[raven flume]

final code

really do appreciate it