How to dynamically create a class and instantiate it in Java? -

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I'm quite new in Java and I'm coming to C ++ from the background. I am working with a class that must be expanded before the protected manufacturer. I need class only in one instance. Is there any way I can dynamically create a class and at the same time can I install?

I have received similar terms, but not marking Mark I have the following code as an example, but of course this syntax is incorrect. 

  last ffd.tokens.CountryTokens cToken = new class USA ffd.tokens.CountryTokens {USA (String value) {super (value); }} ("America");    
 
 
 something like that?  
  last ffd token. CountryToken cToken = new ffd.tokens.ountryTokens ("someValue") {// some override};   
 Correction:  
 You can also create a builder in protected ways, which will increase  ffd.tokens.CountryTokens  (Very strange?)    Public abstract class countrybuilder ffd.tokens.CountryTokens {Public Contributor () {super ("useless-data") extends; } Public essence ffd.tokens.CountryTokens creation (string val); }   
 Use:  
  country maker creator = new countrybuilder () {@Override public ffd.tokens.CountryTokens build (string val) {back new FFD. Token Deshtokan (val) {}; }}; Builder.build ("United States"); Builder.build ("Canada");   
 I think you get this idea.

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