How do I change the value of an attribute?

Suppose we have a class named as Train it has two constructors, two methods, and a single attribute each of wh?

• Suppose we have a class named as Train it has two constructors, two methods, and a single attribute each of which described as follows: • One attribute: maxSpeed – an int value representing the maximum speed of the Train object. Note: Train speed of modern Trains may be something like 250 km per hour, so a value you could use for testing purposes is 250. • Two constructors: A default constructor: A constructor that initializes the attribute ms where ms is the maxSpeed. An overloaded constructor: A constructor that takes ms as an argument, where ms is the maxSpeed. • Two methods: getMaxSpeed() – return the maxSpeed value associated with the Train object. setMaxSpeed(ms) – change the maxSpeed value associated with the Train object, where ms is the new value. • Display the value through default constructor and overloaded constructor. • Display setter value through main function.

• Answer:

  doing your homework for you won't help you learn the language. here is my rough thoughts, no compiler. public class Train{ private int maxSpeed = 250; public Train(){ } public Train(int maxSpeed){ this.maxSpeed = maxSpeed; } public int getMaxSpeed(){ return this.maxSpeed; } public void setMaxSpeed(int maxSpeed){ this.maxSpeed = maxSpeed; } } not sure what the two display notes mean