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Java Java Data Structures Exploring the Java Collection Framework ArrayLists

Leen Leenaerts
Leen Leenaerts
1,096 Points

Everytime I try to improve it I'm only getting more errors

./com/example/BlogPost.java:47: error: illegal start of type return words; ^ ./com/example/BlogPost.java:47: error: ';' expected return words; ^ ./com/example/BlogPost.java:50: error: class, interface, or enum expected public String getAuthor() { ^ ./com/example/BlogPost.java:52: error: class, interface, or enum expected } ^ ./com/example/BlogPost.java:54: error: class, interface, or enum expected public String getTitle() { ^ ./com/example/BlogPost.java:56: error: class, interface, or enum expected } ^ ./com/example/BlogPost.java:58: error: class, interface, or enum expected public String getBody() { ^ ./com/example/BlogPost.java:60: error: class, interface, or enum expected } ^ ./com/example/BlogPost.java:62: error: class, interface, or enum expected public String getCategory() { ^ ./com/example/BlogPost.java:64: error: class, interface, or enum expected } ^ ./com/example/BlogPost.java:66: error: class, interface, or enum expected public Date getCreationDate() { ^ ./com/example/BlogPost.java:68: error: class, interface, or enum expected } ^ ./com/example/BlogPost.java:36: error: cannot find symbol List httpList = new ArrayList(); ^ symbol: class ArrayList location: class BlogPost ./com/example/BlogPost.java:38: error: cannot find symbol if (word.startWith("http")) { ^ symbol: method startWith(String) location: variable word of type String Note: JavaTester.java uses unchecked or unsafe operations. Note: Recompile with -Xlint:unchecked for details. 14 errors

com/example/BlogPost.java
package com.example;

import java.io.Serializable;
import java.util.Date;
import java.util.Arrays;
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> words = Arrays.asList(getWords());
    List <String> httpList = new ArrayList<String>();
    for (String word : words){
      if (word.startWith("http")) {
        httpList.add(word);
      }
    }
    return httpList;
  }



    return words;
  }

  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;
  }
}

2 Answers

Jon Kussmann
PLUS
Jon Kussmann
Courses Plus Student 7,254 Points

In the middle of your code you have:

return words;
}

Go ahead and delete those two lines (including the bracket). Things should be working better from there.

Leen Leenaerts
Leen Leenaerts
1,096 Points

Thanks, no idea how it got there

Still Giving mostly the same errors now for the part :

public List <String> getExternalLinks() { List <String> words = Arrays.asList(getWords()); List <String> httpList = new ArrayList<String>(); for (String word : words){ if (word.startWith("http")) { httpList.add(word); } } return httpList; }

Leen Leenaerts
Leen Leenaerts
1,096 Points

./com/example/BlogPost.java:32: error: cannot find symbol public List getExternalLinks() { ^ symbol: class List location: class BlogPost ./com/example/BlogPost.java:33: error: cannot find symbol List words = Arrays.asList(getWords()); ^ symbol: class List location: class BlogPost ./com/example/BlogPost.java:33: error: cannot find symbol List words = Arrays.asList(getWords()); ^ symbol: variable Arrays location: class BlogPost ./com/example/BlogPost.java:34: error: cannot find symbol List httpList = new ArrayList(); ^ symbol: class List location: class BlogPost ./com/example/BlogPost.java:34: error: cannot find symbol List httpList = new ArrayList(); ^ symbol: class ArrayList location: class BlogPost Note: JavaTester.java uses unchecked or unsafe operations. Note: Recompile with -Xlint:unchecked for details. 5 errors

still getting these errors