Product Version: NetBeans IDE 6.8 Beta (Build 200910020947)
Java: 1.6.0_16; Java HotSpot(TM) 64-Bit Server VM 14.2-b01

consider this code with a mistake in declaring class global variable: 
abstract class Person { 
    $this->age; //a mistake 
    abstract function customizedFunction() {}
    function getAge() {
        return $this->age; 
    }
    function setAge($age) {
        $this->age = $age; 
    } // THIS BRACKET IS UNDERLINED 
}

I was writing the code and first time I realized that something is wrong was when I was declaring a setAge function.
This line was underlined while I was typing but I though that because of still not finished line. I end up with a
function and last bracket underlined but the mistake was on variable declaration.