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Start your free trialJulian Garcia
18,380 Pointsjava compiler error
I am trying the second part of the task and I am trying the minimal, no matter if I try:
Set<String> newSet = (Set) mContactMethods.keySet();
return newSet;
or just
return mContactMethods.keySet();
as a text I am trying:
Set<String> hashset = new HashSet<String>();
return hashset;
this is the error i get
./com/example/model/Contact.java:48: error: cannot find symbol
return Set;
^
symbol: variable Set
location: class Contact
Note: JavaTester.java uses unchecked or unsafe operations.
Note: Recompile with -Xlint:unchecked for details.
1 error
What is wrong?
package com.example.model;
import java.util.Map;
import java.util.Set;
import java.util.HashSet;
import java.util.HashMap;
public class Contact {
private String mFirstName;
private String mLastName;
private Map<String, String> mContactMethods;
public Contact(String firstName, String lastName) {
mFirstName = firstName;
mLastName = lastName;
/* This stores contact methods by name
* eg: "phone" => "(555) 555-1234"
*/
mContactMethods = new HashMap<String, String>();
}
public void addContactMethod(String method, String value) {
// TODO: Add to the contact method map
mContactMethods.put(method, value);
}
/**
* Returns the available contact methods. eg: phone, pager,
*
* @return The name of the contact methods that are available
*/
public Set<String> getAvailableContactMethods() {
// FIXME: This should return the current contact method names.
Set<String> hashset = new HashSet<String>();
return hashset;
}
/**
* Returns the value for the contact method if it exists,
*
* @param methodName The name of the contact method to look up.
* @return The name of the contact methods that are available
*/
public String getContactInfo(String methodName) {
// FIXME: return the value for the passed in *methodName*
return Set;
}
public String getFirstName() {
return mFirstName;
}
public String getLastName() {
return mLastName;
}
}
./com/example/model/Contact.java:48: error: cannot find symbol
return Set;
^
symbol: variable Set
location: class Contact
Note: JavaTester.java uses unchecked or unsafe operations.
Note: Recompile with -Xlint:unchecked for details.
1 error
2 Answers
Simon Coates
28,694 PointsIt doesn't know what you mean by Set
public String getContactInfo(String methodName) {
// FIXME: return the value for the passed in *methodName*
return Set;
}
Julian Garcia
18,380 PointsYou were right, It was a typing error.
Thanks.
Simon Coates
28,694 Pointsyeah, when writing java without an IDE, you see the message "cannot find symbol" a lot. It just means java found something it can't interpret. Usually its a spelling mistake, or maybe, a failure to include an import statement.