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Start your free trialEnyang Mercy
Courses Plus Student 2,339 PointsDesigning UI if tag is added to mTags
Please check the if statement Can't compile again
package com.example.model;
import java.util.List;
import java.util.HashSet;
import java.util.Set;
public class Course {
private String mTitle;
private Set<String> mTags;
public Course(String title) {
mTitle = title;
mTags = new HashSet();
// TODO: initialize the set mTags
}
public void addTag(String tag) {
mTags.add(tag);
// TODO: add the tag
}
public void addTags(List<String> tags) {
for(String tag : tags) {
addTag(tag);
}
// TODO: add all the tags passed in
}
public boolean hasTag(String tag) {
if (hasTag.add == mTags)
// TODO: Return whether or not the tag has been added
return true;
}
public String getTitle() {
return mTitle;
}
}
1 Answer
Steve Hunter
57,712 PointsHi there,
The hasTag
method receives a tag
and returns true
if mTags
contains tag
, or false
otherwise.
The List
class has a helpful method called .contains()
which you can chain to the list variable, mTags
and pass in the tag
that the method receives.
This will create a true
or false
outcome so you can just return
the result of that expression from the method.
So, take mTags
, chain .contains()
onto it with dot notation and pass tag
into contains()
inside the brackets. Return that.
Steve.