Serial Monitor of IDE 1.6.3 is not working.....

I tried very simple code written below

float a; void setup() { Serial.begin(9600);

}

void loop() { Serial.println("-------------------"); a = millis(); Serial.print("a "); Serial.println(a); Serial.println("-------------------"); delay(2000); }

to see somthing on serial monitor screen of arduino IDE.. i got nothing .. can anyone help me regard this issue

The obvious one first, have you set the monitor to match the 9600 speed?