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I have a State class with these fields

String name;
City capital;
ArrayList<String> neighbors;

I have a toString() method

public String toString(){
    return ("new State(" + 
        this.name  + ", " + 
        this.capital + ", " + 
        this.neighbors + ")\n");
}

I am trying to test this method on the state

State ME = new State("ME", augusta, MEneighbors );

Where augusta is a defined City, and MEneighbors is an ArrayList with

MEneighbors.add("NH");

This is my test so far

t.checkExpect(ME.toString(),
    "new State(ME, " + augusta.toString() + ", " + [NH] + ")");

I don't quite understand why this isn't working. It works until the ArrayList MEneighbors. How can I get it to add the ArrayList as a String?

Many thanks.

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5
  • 1
    Does this even compile? Commented Nov 15, 2013 at 22:47
  • How is it not working? Are you getting incorrect output? An exception message? Commented Nov 15, 2013 at 22:47
  • 1
    + [NH] + This will never compile in this world. Commented Nov 15, 2013 at 22:48
  • is ArrayList's default .toString() not sufficient? Commented Nov 15, 2013 at 22:48
  • 1
    + [NH] + doesn't compile, what are you trying to do Commented Nov 15, 2013 at 22:48

2 Answers 2

Reset to default
2

Even if you fix the code to be:

t.checkExpect(ME.toString(),
    "new State(ME, " + augusta.toString() + ", " + "[NH]" + ")");

Note: quotes around brackets.

You still forget to add the "\n" in the right side! Because your toString method adds "\n" in the end!

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0

When you define the toString method, call the toString method for ArrayList, like this

public String toString(){
return ("new State(" + 
    this.name  + ", " + 
    this.capital + ", " + 
    this.neighbors.toString() + ")\n");
}

the toString method

Returns a string representation of this collection. The string representation consists of 
a list of the collection's elements in the order they are returned by its iterator, 
enclosed in square brackets ("[]"). Adjacent elements are separated by the characters ", "
(comma and space). Elements are converted to strings as by String.valueOf(Object).
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