Java Code time in and time out

[Joy4hacks]

String tin[] = timeIn.split(":");
String tout[] = timeOut.split(":");

hours += ( Double.parseDouble(tout[0]) - Double.parseDouble(tin[0]) ) >= 9 ? 8 : Double.parseDouble(tout[0]) - Double.parseDouble(tin[0]);

someone tell me what this means?..i dont understand the part " 9 ? 8 : Double.parseDouble(tout[0]) - Double.parseDouble(tin[0]);


currently practicing java.
pls answer me guys..

[elamre]

String tin[] = timeIn.split(":");
String tout[] = timeOut.split(":");

hours += ( Double.parseDouble(tout[0]) - Double.parseDouble(tin[0]) ) >= 9 ? 8 : Double.parseDouble(tout[0]) - Double.parseDouble(tin[0]);

someone tell me what this means?..i dont understand the part " 9 ? 8 : Double.parseDouble(tout[0]) - Double.parseDouble(tin[0]);


currently practicing java.
pls answer me guys..

This is a very rare expression, which barely gets used sadly enough.
It's basically the same as:

if(expression){

}else{

}

So here you have:

if(double - double >=9){
   hours+=8;
}else{
   hours+=double-double;
}