Are private members really more “secure” in Java?

Question

Learning Java I was sometimes taught to use the private access modifier so as not to expose \"sensitive information\" to other classes, as if this could open a legi

Answer 1

I've never heard of it -- in any serious sense -- as a security issue. I mean, decompilers work. You can use them to figure out what's going on inside the bytecode.

Having private members is a maintainability issue. If I only give you method-level access to my internals, then my only responsibility is to ensure that my API methods continue to work. I'm not locked into using a Double versus a BigDecimal on the insides, so long as my methods continue to return Doubles (for instance).