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Start your free trialluke hammer
25,513 PointsJava <String> and List problem
keep getting error ./com/example/BlogPost.java:34: error: cannot find symbol public List getExternalLinks(){ ^ symbol: class Strings location: class BlogPost Note: JavaTester.java uses unchecked or unsafe operations. Note: Recompile with -Xlint:unchecked for details. 1 error
Please can some one explain what the error means and then what i can do to fix my code.
Thank you.
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<Strings> getExternalLinks(){
List<String> results = new ArrayList<String>();
for (String word : getWords()) {
if (word.startsWith("http")){
results.add(word);
}
}
return results;
};
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;
}
}
1 Answer
miguelcastro2
Courses Plus Student 6,573 PointsShould be "String", not "Strings":
// Should be a List of type String, not Strings
public List<Strings> getExternalLinks(){
// Correct
public List<String> getExternalLinks(){
luke hammer
25,513 Pointsluke hammer
25,513 Pointsyour right and that was a problem but I'm still getting an error.
./com/example/BlogPost.java:33: error: cannot find symbol public List getExternalLinks(){ ^ symbol: class string location: class BlogPost Note: JavaTester.java uses unchecked or unsafe operations. Note: Recompile with -Xlint:unchecked for details. 1 error
luke hammer
25,513 Pointsluke hammer
25,513 PointsWeird it did not work that first time but worked when i attempted to do it again.