Originally posted by Shishio San:
Do you guys think that we need to know details about all the wrapper classes functions for the 1.4 exam ??
You need to know the basic concepts regarding wrapper classes (such as, they are immutable and behavior of their equals() method ).
Regarding methods, no, they do not ask such cryptic questions.
You should know the basic working of the parseXXX(), xxxValue(), and toString. They do ask questions like:
double d = //insert stmt here
Option 1. new Double().parseDouble("12.3").doubleValue();
Option 2. Double.parseDouble("12.3").doubleValue();
Option 3. new Double(Double.parseDouble("12.3")).doubleValue();
So you do not have to worry about the radix etc. As long as you understand the basic stuff, you should be ok.