It should only create and return the string. Parameters and returns a string in the format The same names as the private attributes, and use theĬreate a toString() method that accepts no Holds the car's make, and an integer that holds theĬreate a constructor that accepts the model year and make,Īnd sets the speed to 0. Write the code for the following steps above the act() method.Ĭreate three private variables within the class:Īn integer that holds the car's year, a string that After placing the car, select "Controls > Save the World" from the menu.ĭouble-click the Car rectangle (on the right) to open Car.java. Press the compile button and then add a new Car() to the world. Right-click the "Actor" rectangle on the right, and select "New subclass." Name the subclass Car and select a suitable image from the "transport" category. Right-click the "World" rectangle on the right, and select "New subclass." Name the subclass Road and select a suitable image from the "backgrounds" category. Run Greenfoot (from the Linux menu) and then select "Scenario > New." from the Greenfoot menu. Today we will create a new simulation from scratch. Write constructor, accessor, and mutator methods.īefore the break, we took our first look at game design with Greenfoot. Objectivesĭesign an interactive simulation using Greenfoot. Your program will control how those objects interact in the "world" (which in the case of Greenfoot, is just another object). You design the objects by specifying what they should look like (attributes) and what behaviors they should have (methods). Object-oriented programming changes the view of a program as a series of steps to an interaction between objects. James Madison University, Fall 2016 Semester
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