我如何编写这两种不同的方法并对其进行测试

Question

Write two methods called isBetterThan a. The first one should take an int pts and return true if the player has more than pts points and false otherwise. b.The second method should take another Player object and return true if this player has more points than the other player and false otherwise. c. In a comment after this method explain why you cannot create another isBetterThan method which takes another player object and returns the string “yes” if this player has more points than the other player and the string “no” otherwise.

I have done the first one but do not know how to do the second one. I do not know how to call a new Player object as the input.

public class Player{
    private String name;
    private int points;
    private int level;
    public static final int MAX_LEVEL = 10;
    public static int finished = 0;

  public boolean isBetterThan(int value){
        if(value>points)
            return true;
        else
            return false;
     }

a method that would give me another isbetterthan method... I already have a main method that calls these methods for testing.

Answer 1

Here:

public boolean isBetterThan(int value){

allows you to do: somePlayer.isBetterThan(5) for example.

Now simply go in and add

public boolean isBetterThan(Player otherPlayer){
  if (this.points <= otherPlayer.points) ... 

and add the kind of comparison/decision making you want to happen. In order to avoid code duplication, you could simply implement the method to

  return isBetterThan(otherPlayer.points)

But that leads to the question why you got two APIs doing similar things. I would it find more reasonable to only other a isBetterThan(Player) method. You see, your API that compares against a simple int value basically externalizes that view about "levels and points" to the outside world. So either the actual "is better than" is something that is really based on just that number, or it is more complicated.