Binary representations of ints

[Arioch]

How are variables of type int represented in binary by Java?  Specifically, where is the bit for the positive/negative sign and do the shift operators (<<,>>,>>&gt move it?  Any help or pointer to documentation would be appreciated.  Thanks.

 

[palbano]

Dear Arioch,<br><br>You should find that the bitwise representation of the native types are equal to that of their C++ counterparts.<br><br>Also since the native types are all signed, if you should need to do 32 bit unsigned operations you might look into the BigInteger class.<br><br>For documentation try <A HREF="

http://developer.java.sun.com"

TARGET="_new">

http://developer.java.sun.com</A><br><br>Hope

this helps<br>-pete<br>

 

[juliaroberts]

hi,<br><br>In Java the bit for representing the sign is the Most Significant Bit (MSB).<br><br>With regard to the operators &gt;&gt; &lt;&lt; and &gt;&gt;&gt;<br><br>&gt;&gt;&nbsp;&nbsp;:- signed right shift oprerator<br><br>&nbsp;In this case the MSB is replaced with the bit that was originally the MSB. So for neagtive numbers when this operator is applied it retains the negative sign<br><br>&lt;&lt;&nbsp;&nbsp;:- signed left shift operator<br>The bits that are added to the LSB side are 0's <br><br>&gt;&gt;&gt; :- unsigned right shift opertaor.<br><br>The bits that are added to the MSB side are 0's<br><br>Regards<br><br>