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Simple Question ?

Posted on 2004-08-16
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Last Modified: 2012-05-05
Hi;

I just wanna know of what is the use of | and ^ in java. I took an exam in java yesterday for a company.
They have questions that I dont know if I answered it correctly or not so whats the use of the symbol
above. I've reproduce a small example that I have created :

import java.awt.*;

public class Sample {

      Sample() {

      int var = 10;

      GetString(var);
      }

      private void GetString(int i) {

      System.out.println("\n");

      for(int j=1; j<=i; j++) {
      System.out.print(j);
      }

      System.out.println("\n");
      }

      public static void main(String args[]) {

      Sample s1 = new Sample();

      int x = 2 | 3;
      int y = 2;

      System.out.print("Result : ");
      System.out.println( x ^ y );
      System.out.println("Execution Successfull !");
      }
}
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Question by:simple21
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15 Comments
 

Author Comment

by:simple21
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And one more question what happens to a JSP if you compile it ?
Does it turns into applet, servlet or application ormidlet ?
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Assisted Solution

by:objects
objects earned 20 total points
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| and ^ are bitwise operators.
jsp->servlet
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Author Comment

by:simple21
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> bitwise operators

What are bitwise operators ? you use them for what purpose ? thanks.
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Expert Comment

by:objects
Comment Utility
for doing binary arithmetic

eg.

0011 & 1101 = 0001
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Accepted Solution

by:
girionis earned 20 total points
Comment Utility
As already stated they are used when we need to do operations with bits. The | symbol is used to do an OR, which means that if one or both of the operands is 1 then the result is also 1. For example the following:

int x = 2 | 3;

will result in 3 since 2 in binary is 0001 and 3 in binary is 0011 so if we do an OR we have

    0001   = 2
    0011   = 3
--------
    0011   = 3

The first two bits of number 3 will be 0 since we do an OR on two zeros, but the last two bits will be 1 since we do an OR on zero and one (result = 1) and on one and one (result = 1).

The ^ operator is the XOR operator which returns 1 only if one of the operands is 1.
so the  x ^ y will be 3 ^ 2 which is

    0011
    0010
--------
    0001   = 1
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Assisted Solution

by:thomas908
thomas908 earned 20 total points
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The Bit-Wise OR Operator: |

| | 0 1
---+-----
 0 | 0 1
 1 | 1 1

Example

   01001001
| 00011011
----------
  01011011 (This is the binary representation of 91)


The Bit-Wise XOR Operator: ^
^ | 0 1
---+-----
 0 | 0 1
 1 | 1 0

Example
01001001
^ 00011011
----------
  01010010 (This is the binary representation of 82)

For its practical use u may refer to

http://radio.javaranch.com/channel/corey/2004/06/10/1086899519000.html


>>And one more question what happens to a JSP if you compile it ?
Does it turns into applet, servlet or application ormidlet

To a servlet
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Expert Comment

by:thomas908
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Why You Should Analyze Threat Actor TTPs

After years of analyzing threat actor behavior, it’s become clear that at any given time there are specific tactics, techniques, and procedures (TTPs) that are particularly prevalent. By analyzing and understanding these TTPs, you can dramatically enhance your security program.

 
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Expert Comment

by:girionis
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Author Comment

by:simple21
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Im greatfull enough but I only have few points and I'll just close this questions
ones I have the points to share to all of you, thank you so much.
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Expert Comment

by:girionis
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Take you time :)
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Expert Comment

by:objects
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I don't need any points if you're short
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Expert Comment

by:girionis
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Me too :)
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Expert Comment

by:brettmjohnson
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| bitwise OR
^ bitwise XOR
& bitwise AND
<< bitwise left-shift
>> bitwise right-shift

so ( 2 | 3 ) would be:

0000 0010
0000 0011   OR
--------------
0000 0011


and ( x ^ y )  would be ( 3 ^ 2) which is:

0000 0011
0000 0010   XOR
--------------
0000 0001


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Author Comment

by:simple21
Comment Utility
Ok !.
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