Welcome to the Treehouse Community
Want to collaborate on code errors? Have bugs you need feedback on? Looking for an extra set of eyes on your latest project? Get support with fellow developers, designers, and programmers of all backgrounds and skill levels here with the Treehouse Community! While you're at it, check out some resources Treehouse students have shared here.
Looking to learn something new?
Treehouse offers a seven day free trial for new students. Get access to thousands of hours of content and join thousands of Treehouse students and alumni in the community today.
Start your free trialAraz kuberin
6,199 Pointscant run the code!
Hello could some help me !
Example.java:45: error: not a statement
Map<String, List><Treet>> treetsByAuthor = new HashMap<String, List<Treet>>();
^
Example.java:45: error: ';' expected
Map<String, List><Treet>> treetsByAuthor = new HashMap<String, List<Treet>>();
^
Example.java:45: error: illegal start of expression
Map<String, List><Treet>> treetsByAuthor = new HashMap<String, List<Treet>>();
^
3 errors
MY code!
import java.util.Arrays; import java.util.Date; import java.util.HashSet; import java.util.HashMap; import java.util.Map; import java.util.Set; import java.util.TreeSet; import java.util.List; import java.util.ArrayList;
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>();
Set<String> allMentions = new TreeSet<String>();
for (Treet treet : treets){
allHashTags.addAll(treet.getHashTags());
allMentions.addAll(treet.getMentions());
}
System.out.printf("Hash tags: %s %n", allHashTags);
System.out.printf("Mentions: %s %n", allMentions);
Map<String, Integer> hashTagCounts = new HashMap<String, Integer>();
for (Treet treet : treets){
for(String hashTag : treet.getHashTags()){
Integer count = hashTagCounts.get(hashTag);
if (count == null){
count = 0;
}
count++;
hashTagCounts.put(hashTag, count);
}
} System.out.printf("Hash tag counts: %s %n", hashTagCounts);
Map<String, List><Treet>> treetsByAuthor = new HashMap<String, List<Treet>>();
for (Treet treet : treets){
List<Treet> authoredTreets = treetsByAuthor.get(treet.getAuthor());
if(authoredTreets == null){
authoredTreets = new ArrayList<Treet>();
treetsByAuthor.put(treet.getAuthor(), authoredTreets);
}
authoredTreets.add(treet); }
System.out.printf("Treets by author: %s %n ", treetsByAuthor); System.out.printf("Treets by nickrp: %s %n ", treetsByAuthor.get("nickrp"));
}
}
1 Answer
Florian Tönjes
Full Stack JavaScript Techdegree Graduate 50,856 PointsHi Araz,
at line 45 you have a typo. In your code it's "Map<String, List><Treet>>". It should be "Map<String, List<Treet>>". See if that helps.
Kind Regards, Florian
Araz kuberin
6,199 PointsAraz kuberin
6,199 PointsThank you its works NOW!