Returning HashMap values and keys through an array method

Question

I'm trying to return keys and values through an array method.

I have done this:

public ArrayList<String> translationList() {
    for (String key : translations.keySet()) {
        System.out.println(key + " = ");
    }
    return new ArrayList<String>(this.translations.values());
}

And in my Main.java

ArrayList<String> translations = dictionary.translationList();
for (String translation : translations) {
    System.out.println(translation);
}

It returns

apina = 
cembalo = 
banaani = 
monkey
harpsichord
banana

I'm not sure how to get them to print on the same line after the translation of the word. I know it's printing the for loop before returning the array but that is where my problem is and not sure how to solve it.

use System.out.println("translations="+translations); or inside for-loop use `System.out.print(translation); — seahawk
– seahawk, Commented Sep 20, 2015 at 5:31

Suresh Atta · Accepted Answer · 2015-09-20 05:11:55Z

3

Since you are getting only values back there is no way to get key based on value. So hence not possible.

What you can do is return keys from method and iterate that in your method.

or simply change your method to

public ArrayList<String> translationList() {
    List<String> returnList = new ArrayList<>(String);
    for (Entry<Integer, String> entry : testMap.entrySet()) {

                returnList.add(entry.getKey()+"="+entry.getValue());

        }
    return returnList;
}

and in your main method

ArrayList<String> translations = dictionary.translationList();
for (String translation : translations) {
    System.out.println(translation);
}

edited Sep 20, 2015 at 5:11

answered Sep 20, 2015 at 5:04

Suresh Atta

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3 Comments

syntax Over a year ago

I understand but I'm not sure how I could do that, could you explain a bit more?

syntax Over a year ago

Okay I see, the website I'm doing exercises on hasn't taught me about getKey or getValue so I didn't know to use them. Would there be no other way to do this? Thank you for your help

Suresh Atta Over a year ago

@syntax This is the way I know.

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