This thread is for topics not covered by K&B 1.4 book

[Ramya Chowdary]

Topics not Covered by K&B scjp 1.4 book

1) For modulus Operations like 26.4%4.6

assume like a%b,deduct b from a untill result is less than b.
so answer is 3.4.

2) for operations like a%b where b>a,then result is a.


3) char \u0063='\u0063'; is a legal statement

4)Float Wrapper constructor is overloaded to take double also.
i.e Float f1=new Float(3.1d);

Ranchers,now its your turn for Posting.

[ December 20, 2006: Message edited by: ramya sri ]

[ December 20, 2006: Message edited by: ramya sri ]
[ December 21, 2006: Message edited by: Barry Gaunt ]

[Joe San]

Hey,

char /u0063='/u0063'; is a legal statement

What other legal statements do you know for char??

[Joe San]

For shift operators,

16 << 5 = 16 * 2^5

16 >> 5 = 16/2^5

Can anyone tell me for >>> and also what if the 5 above in both cases is negative??

[Joe San]

To add,

When x is positive ~x = -(x+1)

When x is negative ~x = -x+1

[Bert Bates]

Hi Guys,

As far as this thread goes, I think it's important to explicitly distinguish between the 1.4 exam, the 5.0 exam, and which edition of K&B you're referencing! We will take these posts very seriously because we don't want our books to be incomplete!

So far, none of the topics you've listed are on the 5.0 exam - are you thinking about the 1.4 exam?

Thanks,

Bert

[marc weber]

Originally posted by Jothi Shankar Kumar Sankararaj:
...what if the 5 above in both cases is negative??

For type int, "only the five lowest-order bits of the right-hand operand are used as the shift distance... The shift distance actually used is therefore always in the range 0 to 31, inclusive."

For type long, "only the six lowest-order bits of the right-hand operand are used as the shift distance... The shift distance actually used is therefore always in the range 0 to 63, inclusive."

Ref: JLS - 15.19 Shift Operators (which also addresses >>>).

Important: Please note Bert's post above!
[ December 20, 2006: Message edited by: marc weber ]

[Joe San]

One more addition,

-m >> x will always give -1 as the o/p.

[Ramya Chowdary]

too add,
A final int with in the range of -128 to 127 can be assigned to byte without any casting.but it is not in the case of a final long.

[Ramya Chowdary]

if you declare a variable static,implictly it also mean Transient.so no need to do declare a static variable as transient.

visitors don't sit tight,pls post

[Bert Bates]

So far none of this stuff is on the 5.0 exam and only a little of it is on the 1.4 exam!