Solved

what is this mean ">>"?

Posted on 2006-11-14
8
202 Views
Last Modified: 2011-09-20
i have this code from my old colleague, can anyone tell me what does this means?

 
abyLic[4] = (byte) (iLicenseID);
        abyLic[5] = (byte) (iLicenseID >> 8);
        abyLic[6] = (byte) (iLicenseID >> 16);
        abyLic[7] = (byte) (iLicenseID >> 24);
       
        abyLic[8] = (byte) (iSMSCounter);
        abyLic[9] = (byte) (iSMSCounter >> 8);


the abyLic[] is an array and the iLicenseID is int.

what doest that mean by iLicenseId >> 8 ??
is that he is trying to set the value to 8 in abyLic[5]?
0
Comment
Question by:taiping
  • 3
  • 2
  • 2
  • +1
8 Comments
 
LVL 86

Expert Comment

by:CEHJ
ID: 17945013
Shift right operator

0
 
LVL 23

Expert Comment

by:Ajay-Singh
ID: 17945014
bitwise shift
0
 
LVL 86

Expert Comment

by:CEHJ
ID: 17945018
0
 
LVL 92

Expert Comment

by:objects
ID: 17945183
0
Is Your Active Directory as Secure as You Think?

More than 75% of all records are compromised because of the loss or theft of a privileged credential. Experts have been exploring Active Directory infrastructure to identify key threats and establish best practices for keeping data safe. Attend this month’s webinar to learn more.

 
LVL 92

Expert Comment

by:objects
ID: 17945184
0
 
LVL 35

Accepted Solution

by:
girionis earned 125 total points
ID: 17946486
Just to fill up with what the other experts suggested

>what doest that mean by iLicenseId >> 8 ??

The ">>" is a binary operator and it means "right shift the value in the "iLicensedId" eight times". The value of "iLicencedId" is an integer. When you right shift a value you make it smaller. For example if the "iLicencedId" holds the value of 512, which in *binary* it is 000100000000, and you right shift 8 times, it becomes 000000000010 (=2 in decimal). As you see you can see the digit 1 is moved 8 positions to the right. This is what the >> operator is doing, it moves the digits to the right.

> is that he is trying to set the value to 8 in abyLic[5]?

No, he is setting the *converted* value (the one that was shifted to the right 8 times), i.e. the result of the right-shift operation, to the 6th position os the "abyLic" array
0
 
LVL 35

Expert Comment

by:girionis
ID: 17946495
Sorry the 512 binary should be 001000000000.
0
 
LVL 86

Expert Comment

by:CEHJ
ID: 17953872
taiping - why did you ignore previous correct answers?
0

Featured Post

Is Your Active Directory as Secure as You Think?

More than 75% of all records are compromised because of the loss or theft of a privileged credential. Experts have been exploring Active Directory infrastructure to identify key threats and establish best practices for keeping data safe. Attend this month’s webinar to learn more.

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

Java contains several comparison operators (e.g., <, <=, >, >=, ==, !=) that allow you to compare primitive values. However, these operators cannot be used to compare the contents of objects. Interface Comparable is used to allow objects of a cl…
Basic understanding on "OO- Object Orientation" is needed for designing a logical solution to solve a problem. Basic OOAD is a prerequisite for a coder to ensure that they follow the basic design of OO. This would help developers to understand the b…
Viewers learn about the “for” loop and how it works in Java. By comparing it to the while loop learned before, viewers can make the transition easily. You will learn about the formatting of the for loop as we write a program that prints even numbers…
Viewers will learn about basic arrays, how to declare them, and how to use them. Introduction and definition: Declare an array and cover the syntax of declaring them: Initialize every index in the created array: Example/Features of a basic arr…

911 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question

Need Help in Real-Time?

Connect with top rated Experts

20 Experts available now in Live!

Get 1:1 Help Now