How to stop overiding a bean in Spring

Question

I noticed that if you define a bean with same id in two xml files, it would be overiden in the second file.

Say in file a.xml i have
       

        

Answer 1

Also:

  final ClassPathXmlApplicationContext ctx = new ClassPathXmlApplicationContext();
  ctx.setAllowBeanDefinitionOverriding(false);
  ctx.setConfigLocations(shardContextImport);
  ctx.setParent(refreshedEvent.getApplicationContext());
  ctx.refresh();