Help with my final review? (intro to java) 5. (20 points) Labels and loops. What

Question

Help with my final review? (intro to java)

5. (20 points) Labels and loops. What does the following method calculate and return?

public int[] loopy(JLabel[][] labels) { final int MAX_LABEL_LENGTH = 100; int[] nums = new int[MAX_LABEL_LENGTH]; for (int i = 0; i < labels.length; i++) { for (int j = 0; j < labels[i].length; j++) { nums[labels[i][j].getText().length()]++; } } return nums; }

---- doesn't it just return a bunch of null statements...? haha

6. (30 points) Writing Classes. Write a class to represent a Twitter account. An account has a String id, an email address and a list of all hashtags (use an ArrayList) used by this account

. a. Write a class skeleton with appropriate variable declarations.

b. Write a constructor that creates an account using the specified id and email address. The list of hashtags is initialized to be empty.

c. Write a method named checkHashtag(String tag) that returns true if the given tag was ever used by the account, false otherwise. Use the contains(Object o) method from the ArrayList class to do the search.

Explanation / Answer

nums is an array which contains THE LENGTH of each label in every label row.

public class twitter_accnt
{
private String id;
private String email_address;
private ArrayList<String> hashtag;
twitter_accnt(String i,String e)
{
id=i;
email_address=e;
ArrayList<String> hashtag=new ArrayList<String>();
}
Boolean checkHashtag(String tag)
{
if(hashtag.contains(tag))
return true;
else
return false;
}
}

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