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JavaRanch » Java Forums » Certification » Programmer Certification (SCJP/OCPJP)
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Precedence question!!!

Terence Lin
Greenhorn

Joined: Mar 11, 2003
Posts: 2
I wonder why the || operator is excetuted before && operator..:??
class A {
static boolean a;
static boolean b;
static boolean c;
public static void main (String[] args) {
boolean x = (a = true) || (b = true) && (c = true);
System.out.print(a + "," + b + "," + c);
}
}
The result is true, false, false.
P.S This question is from Dan's mock exam, they are really helpful, thanks, Dan.
Valentin Crettaz
Gold Digger
Sheriff

Joined: Aug 26, 2001
Posts: 7610
Welcome to Javaranch, a friendly place for Java greenhorns
Please check out the following discussion which handles the same topic: http://www.coderanch.com/t/240790/java-programmer-SCJP/certification/Simple-precedence
We ain't got many rules 'round these parts, but we do got one. Please change your displayed name to comply with the JavaRanch Naming Policy.
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Dan Chisholm
Ranch Hand

Joined: Jul 02, 2002
Posts: 1865
Originally posted by TTT^O^TTT ^O^:

P.S This question is from Dan's mock exam, they are really helpful, thanks, Dan.

You're welcome.
That question seems to be a popular one here at the ranch.


Dan Chisholm<br />SCJP 1.4<br /> <br /><a href="http://www.danchisholm.net/" target="_blank" rel="nofollow">Try my mock exam.</a>
John Lee
Ranch Hand

Joined: Aug 05, 2001
Posts: 2545
Originally posted by TTT^O^TTT ^O^:
I wonder why the || operator is excetuted before && operator..:??
class A {
static boolean a;
static boolean b;
static boolean c;
public static void main (String[] args) {
boolean x = (a = true) || (b = true) && (c = true);
System.out.print(a + "," + b + "," + c);
}
}
The result is true, false, false.
P.S This question is from Dan's mock exam, they are really helpful, thanks, Dan.

The question is not why, it is why not. || and && has equal precedence, so it start from left to right.
 
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subject: Precedence question!!!
 
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