How to avoid code duplication with many small classes?

Question

I have different classes called English, Spanish, Frenchetc .:

Class English{
    String name = "English";
    String alias = "ENG";
}

Class French{
    String name = "French";
    String alias = "Fre";
}

Similar to other language classes.

And another class called Language:

Class Language{
    String name = "";
    String alias = "";
}

Depending on my requirements, I want to use English / French / Spanish for my language.

Class ABC{

    main(){
        Language lan = new Language();
        Object obj = getObject(1);
        if(obj instanceof English){
            lan.name = ((English)obj).name;
            lan.aliasName = ((English)obj).aliasName;
        }
    }

}

If I have 10 languages, do I need to write the same code for 10 different languages? In this case, how can I make one method and pass these arguments as parameters? Something like that:

setVariablesForLanguage(String className, Object obj)

Here I showed only 2 variables, but my class will contain more than 100 variables. My actual re-examination - I want to set my language variables in one of these languages ​​..

Answer 1

, , . :

public static final Language ENGLISH = new Language("English", "Eng");
public static final Language FRENCH  = new Language("French",  "Fre");

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Language lan = new Language();
Object obj = getObject(1);
if(obj instanceof Language){
    lan.name = ((Language)obj).name;
    lan.aliasName = ((Language)obj).aliasName;
}

Answer 2

, Name Alias. .

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Answer 3

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:

public class Language  {

    String name;
    String alias;

    public Language( String aName, String anAlias ) { 
        this.name = aName;
        this.alias = anAlias;
    }
}

.

"getObject()", , , :

Language lan = new Language();

Object obj = getObject(1);

if(obj instanceof English){

    lan.name = ((English)obj).name;

    lan.aliasName = ((English)obj).alias;
}

:

Language lang  = getObject(1);

. getObject :

public Language getObject( int id ) { 
     switch( id ) { 
          case 0:  return new Language("English", "ENG");
          case 1:  return new Language("French", "FRE");
          case 2:  return new Language("Spanish", "ESP");
          case 3:  return new Language("German", "GER");
          case 4:  return new Language("Portuguese", "POR");
          ....
          etc. 
      }
}

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Answer 4

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- :

abstract class Language
{
    private final String name;
    private final String alias;

    public Language(final String m, final String a)
    {
        name  = n;
        alias = a;
    }

    public String getName()
    {
        return (name);
    }

    public String getAlias()
    {
        return (alias);
    }
}

class English
    extends Language
{
    public English()
    {
        super("English", "ENG");
    }
}

class ABC
{
    public static void main(final String[] argv)
    {
        fnal Language lang;

        lang = getObject(1);
    }
}

:

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Answer 5

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:

Class ABC{

main(){

 Language lan = getObject(1);

}

}

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