Count of numbers doesn't come out right.

Question

My last step in my attached code it to get the numbers correct in the method for getting all Categories. I am using the same logic from the Example.java, and the Treet class, but it's not coming out right.

In testing the HashMap with jshell and java-repl, I see there is no accounting for case in the Map table. Therefore Cat4 and CAT4 would be considered different.

But no matter where I place a conversion like toUpperCase or toLoweCase, I can't make the results come out correctly.

Any clues as to why the logic works in one program but not mine?

Thanks in advance for any clues.

com/example/BlogPost.java

package com.example;

import java.io.Serializable;
import java.util.ArrayList;
import java.util.Date;
import java.util.List;


public class BlogPost implements Comparable<BlogPost>, Serializable {
  private String mAuthor;
  private String mTitle;
  private String mBody;
  private String mCategory;
  private Date mCreationDate;

  public BlogPost(String author, String title, String body, String category, Date creationDate) {
    mAuthor = author;
    mTitle = title;
    mBody = body;
    mCategory = category;
    mCreationDate = creationDate;
  }

  public int compareTo(BlogPost other) {
    if (equals(other)) {
      return 0;
    }
    return mCreationDate.compareTo(other.mCreationDate);
  }

  public String[] getWords() {
    return mBody.split("\\s+");
  }

  public List<String> getExternalLinks() {
    List<String> links = new ArrayList<String>();
    for (String word : getWords()) {
      if (word.startsWith("http")) {
        links.add(word);
      }
    }
    return links;
  }

  public String getAuthor() {
    return mAuthor;
  }

  public String getTitle() {
    return mTitle;
  }

  public String getBody() {
    return mBody;
  }

  public String getCategory() {
    return mCategory;
  }

  public Date getCreationDate() {
    return mCreationDate;
  }
}

com/example/Blog.java

package com.example;

import java.util.ArrayList;
import java.util.HashMap;
import java.util.HashSet;
import java.util.List;
import java.util.Map;
import java.util.Set;
import java.util.TreeSet;


public class Blog {
  List<BlogPost> mPosts;

  public Blog(List<BlogPost> posts) {
    mPosts = posts;
  }

  public List<BlogPost> getPosts() {
    return mPosts;
  }

  public Set<String> getAllAuthors() {
    Set<String> authors = new TreeSet<>();
    for (BlogPost post: mPosts) {
      authors.add(post.getAuthor());
    }
    return authors;
  }

  public List<String> getAllCategories() {
    List<String> categories = new ArrayList<String>();
    String category;

    for (BlogPost post: mPosts) {
       categories.add(post.getCategory());
       }
    return categories;
  }

 public Map<String, Integer> getCategoryCounts() {
     Map<String, Integer> categoryCounts = new HashMap<String, Integer>();
          for (BlogPost post : mPosts) {
           for (String category : getAllCategories()){
             Integer count = categoryCounts.get(category);
             if (count == null) {
             count = 0;
             } 
             count++;
             categoryCounts.put(category, count);
           }
         }
    return categoryCounts;
  }
}

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James Adamski

James Adamski

Count of numbers doesn't come out right.