Answer Posted / guest
The wrapper classes can take constructors of either the
type they are designed to wrap or of a String that can be
converted to that type. Thus the Integer class can take a
number that could be contained by an int, but an error will
occur if you try to pass a number with a floating point
component. Remember that the wrapper classes are just that
classes, they are not primitives and instances of the
wrappers can only be manipulated in the same way as any
class. You may get questions on the exam with code that
uses standard math operations to manipulate instances of
wrappers. You can of course use the + operator where it
would implicitly call the toString method, but as soon as
you see the - * or % operator, beware.
| Is This Answer Correct ? | 7 Yes | 8 No |
Post New Answer View All Answers
Why java is not 100% object-oriented?
EDS (Electronic Data Systems India Pvt Ltd) at Chennai on 16-12-2006.
What is the difference between equals() and == in java?
What is garbage collection? Can it be forced to run?
Explain about java sdk?
What is a map in java?
What is the SimpleTimeZone class?
Define locale.
What is replacefirst in java?
What are the main concepts of oops in java?
What is binary search in java?
How can we make a class virtual?
What is subsequence of a string?
Write a function for palindrome and factorial and explain?
What is size_t?
