operator precedence

[sanjay kumar]

I am new to scjp preparation group. so first hi to all..

iam not absolutely clear about operator precedence .

question:
class Sam
{
static boolean a,b,c,d;
public static void main(String arg[])
{
d = (a=true) || (b=true) && (c=true);
System.out.println(a +","+b+","+c);
}
}

output:true,false,false
doubt:&& has higher precedence than || then why || is evaluated first.

suggest me a clear guide/tutorial for operator precedence and associativity.

[Srikanth Basa]

So the answer to your question goes as below

Evaluate: ((a=true) || ((b=true) && (c=true)));
Evaluate: ((true) || ((b=true) && (c=true))); // a=true is executed

As it knows true || something is always true (short circuited), the control breaks at this step without executing the further statements for b and c

So the result is a=true b=false and c=false

[wise owen]

Java Operator Precedence and Associativity Table
What are operator precedence and the order of operand evaluation?