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Chris Freeman
Treehouse Moderator 68,441 PointsIt may help to think of an object as a instantiation of a class. Functions or methods defined within the class can be be associated with the class (class functions) or with the object instantiated from the class (instance functions). When programming, a class method is signified with the word "static".
How I approach the solution is to consider the general form for a method, then fill it in based on the task description.
// general method structure
<access> <returns> <name>(<arguments>) {
<action code>
return <result>
}
For the challenge, you are asked to create two helper methods. Let's build it by filling in the sections above based on the task description:
// Task 1 of 2
// Create a helper method that returns whether or not the GoKart needs
// to be charged (<action>)
// This is asking for a True or False result so return a boolean <(returns)>
// Make it public (<access>) and name it isBatteryEmpty (<name>).
// so:
// access is "public"
// returns is "boolean"
// name is "isBatteryEmpty()"
// arguments is None
// action code is "GoKart needs charging"
// This is determined by "mBarsCount == 0"
// result is boolean value
public boolean isBatteryEmpty() {
// combining the return result and action code
return mBarsCount == 0;
}
// Task 2 of 2
// Now create a helper method named isFullyCharged (<name>). It should
// return true (<returns>) if the GoKart is at max capacity (<action code>).
// so:
// access is not specified so assume "public"
// returns is "boolean"
// name is "isFullyCharged()"
// arguments is None
// action code is "GoKart is at max capacity"
// This is determined by "mBarsCount == MAX_BARS"
//
public boolean isFullyCharged() {
// combining the return result and action code
return mBarsCount == MAX_BARS;
}
Tony K
Courses Plus Student 442 PointsVery Nice Explanation Chris Freeman
jinhwa yoo
10,042 Pointsperferct... I understand everything.. now.. omg...
Grigorij Schleifer
10,365 PointsGrigorij Schleifer
10,365 PointsGreat explanation, Chris !!!!