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Start your free trialSteven Morimoto
Courses Plus Student 1,836 PointsJava Maps moduel
Hi,
I've been through the video and typed out the code in Workspaces. When I attempt to compile Example it keeps on giving me an errors. One of the errors is about not being able to find getHashTags() in treet. Is there a line of code that I am missing within the Treet class, or is there something else that I'm missing?
I appreciate all of the help,
Steve
2 Answers
Frank Torchia
18,346 PointsHey Steve,
Can you paste the code that you are trying so I can take a look?
Thanks!
Steven Morimoto
Courses Plus Student 1,836 PointsSure:
Example.java
import java.util.Arrays; import java.util.Date; import java.util.HashMap; import java.util.HashSet; //Sets import java.util.Map; import java.util.Set; //Sets
import com.teamtreehouse.Treet; import com.teamtreehouse.Treets;
public class Example {
public static void main(String[] args) { Treet[] treets = Treets.load(); System.out.printf("There are %d treets. %n", treets.length); Set<String> allHashTags = new HashSet<String>(); //Sets Set<String> allMentions = new HashSet<String>(); //Sets for(Treet treet : treets) //Sets { allHashTags.addAll(treet.getHashTags()); //Sets } System.out.printf("Hash tags: %s %n", allHashTags); System.out.printf("Mentions: %s %n", allMentions);
Map<String, Integer> hashTagsCounts = new HashMap<String, Integer>(); //Maps
for(Treet treet : treets){ //see line 15
for(String hashTag : treet.getHashTags()) //for each treet loop through each hash tag in
//that treet
{
Integer count = hashTagCounts.get(hashTags);
if(count == null)
{
count = 0;
}
count++;
hashTagCount.put(hashTag, count);
}
}
System.out.printf("Hash tag counts %s %n", hashTagCounts);
}
}
Treet.java
package com.teamtreehouse;
import java.io.Serializable; import java.util.Date;
public class Treet implements Comparable, Serializable { private static final long serialVersionUID = 7146681148113043748L; private String mAuthor; private String mDescription; private Date mCreationDate;
public Treet(String author, String description, Date creationDate) { mAuthor = author; mDescription = description; mCreationDate = creationDate; }
@Override public String toString() { return String.format("Treet: \"%s\" by %s on %s", mDescription, mAuthor, mCreationDate); }
@Override public int compareTo(Object obj) { Treet other = (Treet) obj; if (equals(other)) { return 0; } int dateCmp = mCreationDate.compareTo(other.mCreationDate); if (dateCmp == 0) { return mDescription.compareTo(other.mDescription); } return dateCmp; }
public String getAuthor() { return mAuthor; }
public String getDescription() { return mDescription; }
public Date getCreationDate() { return mCreationDate; }
public String[] getWords() { return mDescription.toLowerCase().split("[^\w#@']+");
}
}