LangSelector.java

package com.vitco.manager.lang;

import javax.annotation.PostConstruct;
import java.util.Locale;
import java.util.ResourceBundle;

/*
* Implementation of LangSelectorInterface
*
* Manages languages. We can set the language and country and the language bundle to be used.
* A value for a key is obtained with getString. Init must be called when everything is set
* correctly.
*/

public final class LangSelector implements LangSelectorInterface {
    private String language;
    private String country;
    private ResourceBundle rb;
    private String defaultFile;

    @PostConstruct
    @Override
    public void init() {
        Locale locale = new Locale(language, country);
        rb = ResourceBundle.getBundle(defaultFile, locale);
    }

    @Override
    public final void setLanguageBundle(String filename) {
        this.defaultFile = filename;
    }

    @Override
    public final void setLanguage(String language) {
        this.language = language;
    }

    @Override
    public final void setCountry(String country) {
        this.country = country;
    }

    @Override
    public String getString(String key) {
        if (rb.containsKey(key)) {
            return rb.getString(key);
        } else {
            System.err.println("Error: There is no keyword \"" + key + "\" defined in the language bundle!");
            return "";
        }
    }

    @Override
    public boolean containsString(String key) {
        return rb.containsKey(key);
    }
}