Can I change the console in Eclipse?

What you can do is configure an external launcher for cmd or terminal, for this:

• Go to run-> External Tools -> External Tools Configurations
• Once there, you create a new program and fill in the information requested

Here is a more detailed tutorial.

link

PUBLISHED WITH USEFUL ANSWER

@AugustoHerbel also, if what you want is to show the results by opening the console, you could do it with code, here is a small example:

public static void main(String[] args) { 
  try { 
    int a = 3, b = 2, suma = 0; 
    suma = a+b; 
    Runtime rt = Runtime.getRuntime(); 
    rt.exec("cmd.exe /c start echo suma: "+suma); 
  } catch (IOException e) { 
    // TODO Auto-generated catch block 
    e.printStackTrace(); 
  } 
}