My issue with this has been resolved by SwingWorkers. When I put the function of switching languages, it started to work.

You can read about it here -> java doc

Problem was probably that main thread stucked with running GUI itself and it was not able to do anything else. 

Automatic internationalization in Java
Antibodies or immunoglobulins are proteins made ​​by the immune system in response to alien(!) molecules. Each antibody binds to its specific antigen. This great diversity and specificity is cause of diversity in Antigen Binding Site of heavy chain and light chain of antibody. Although other sections of Antibody are highly stable, Binding sites are very mutant. What is the reason for this difference in mutation rates in different parts of antibodies?
