Boolean

[Spandan Pandey]

Hi guys!!
I was just having trouble understanding how the boolean works in Java.I am not really getting the logic..the idea is a bit vague.I would be glad if you made it a bit clear for a novice like me.
For example in this program:

class DrumKit {
 boolean topHat = true;  //So What are we doing in these two lines?
 boolean snare = true;
void playTopHat( ) {
    System.out.println("ding ding da-ding");
   } 
 void playSnare( ) {
  System.out.println("bang bang ba-bang");
  }
 }
class DrumKitTestDrive {                                        
  public static void main(String [ ] args){
   DrumKit d = new DrumKit( );
 d.playSnare( );  
d.snare=false; 
d.playTopHat( );
if (d.snare == true) {
/* Why this if condition is needed..this seems a bit unrequired.this
    isn't doing anything.My output is coming the same without this.Please help!! */
    d.playSnare( );
   }
  }
}

[Campbell Ritchie]

You ought to use code tags, but I have added them for yoiu. Coloured text doesn’t work inside code tags. It looks a lot better () and would have been better still with correct indentation.
Is that example from Head First Java? Which page? Have you copied it correctly? I am sure Sierra & Bates would never use == true, and neither should you; it is poor style and error‑prone in case you write = by mistake.
The idea of the condition is to show that the bangbang‑a‑bang method is not called when that flag is set to false. In line 3 it becomes true, and later (line 15) it becomes false.

[Spandan Pandey]

Campbell Ritchie wrote:You ought to use code tags, but I have added them for yoiu. Coloured text doesn’t work inside code tags. It looks a lot better () and would have been better still with correct indentation.
Is that example from Head First Java? Which page? Have you copied it correctly? I am sure Sierra & Bates would never use == true, and neither should you; it is poor style and error‑prone in case you write = by mistake.
The idea of the condition is to show that the bangbang‑a‑bang method is not called when that flag is set to false. In line 3 it becomes true, and later (line 15) it becomes false.

Yeah,it's from head first java.Pg 46..it's from an exercise code magnets!!
so,what should one use instead of "== true"?

Thanks I didn't know how to use code tags that time.

[fred rosenberger]

if you have a bolean, you can just do this:

if (myBoolean)
{
    // do something
}
else
{
   // do something else
}

[Campbell Ritchie]

Spandan Pandey wrote: . . .
so,what should one use instead of "== true"?

What Mr Rosenberger said.
Instead of == false, use if (!myBoolean)...

Thanks I didn't know how to use code tags that time.

You’re welcome

And now I have found my copy of HFJ and p46, I am surprised to see they used == true there