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Start your free trialAdi Strasser
3,846 PointsJava - Data Structures : Interfaces
Error:
Example.java:30: error: cannot find symbol
Arrays.sort(treets);
^
symbol: variable Arrays
location: class Example
./com/teamtreehouse/Treet.java:34: error: cannot find symbol
return mDescription(other.mDescription);
^
symbol: method mDescription(String)
location: class Treet
2 errors
Code: (Example.java)
import java.util.Date;
import com.teamtreehouse.Treet;
public class Example {
public static void main(String[] args) {
Treet treet = new Treet(
"craigdennis",
"Want to be famous? Simply tweet about Java and use " +
"the hashtag #treet. I\'ll use your tweet in the new " +
"@treehouse course about data structures.",
new Date(1421849732000L)
);
Treet secondTreet = new Treet(
"journeytocode",
"@treehouse makes learning Java sooooooo fun! #treet",
new Date(1421878767000L)
);
System.out.printf("This is a new Treet: %s %n", treet);
System.out.println("The words are: ");
for (String word : treet.getWords()) {
System.out.println(word);
}
Treet[] treets = {treet, secondTreet};
Arrays.sort(treets);
for (Treet exampleTreet : treets) {
System.out.println(exampleTreet);
}
}
}
Code: (Treet.java)
package com.teamtreehouse;
import java.util.Date;
import java.util.Arrays;
public class Treet implements Comparable {
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(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#@']+");
}
}
3 Answers
Steven Williams
2,199 PointsHello Strasser,
I believe it will compile clean with import java.util.Arrays; added to your Example.class.
Tonnie Fanadez
UX Design Techdegree Graduate 22,796 PointsFirst of all import import java.util.Arrays on Example. java Secondly you have left out something on compareTo () method inside the Treet.java class. The return statement should look like this: return mDescription.compareTo(other.mDescription);
Adi Strasser
3,846 Points*** Code not complete for this lesson, but it should compile.