The method add(String) is undefined for the type String
ArrayList<String> indirizzi = new ArrayList<String>();
for(int i=0; i<n; i++)
String ind = in.nextLine();
indirizzi.get(i).add(ind);
The method
add(String)is undefined for the typeString.
This program gives me the above error.
I don't understand why.
java
edited Nov 11 '18 at 22:59
GBlodgett
10.2k42035
asked Nov 11 '18 at 22:50
user10610048user10610048
676
add a comment |
ArrayList<String> indirizzi = new ArrayList<String>();
for(int i=0; i<n; i++)
String ind = in.nextLine();
indirizzi.get(i).add(ind);
The method
add(String)is undefined for the typeString.
This program gives me the above error.
I don't understand why.
java
edited Nov 11 '18 at 22:59
GBlodgett
10.2k42035
asked Nov 11 '18 at 22:50
user10610048user10610048
676
add a comment |
ArrayList<String> indirizzi = new ArrayList<String>();
for(int i=0; i<n; i++)
String ind = in.nextLine();
indirizzi.get(i).add(ind);
The method
add(String)is undefined for the typeString.
This program gives me the above error.
I don't understand why.
java
edited Nov 11 '18 at 22:59
GBlodgett
10.2k42035
asked Nov 11 '18 at 22:50
user10610048user10610048
676
ArrayList<String> indirizzi = new ArrayList<String>();
for(int i=0; i<n; i++)
String ind = in.nextLine();
indirizzi.get(i).add(ind);
The method
add(String)is undefined for the typeString.
This program gives me the above error.
I don't understand why.
java
java
edited Nov 11 '18 at 22:59
GBlodgett
10.2k42035
asked Nov 11 '18 at 22:50
user10610048user10610048
676
edited Nov 11 '18 at 22:59
GBlodgett
10.2k42035
asked Nov 11 '18 at 22:50
user10610048user10610048
676
edited Nov 11 '18 at 22:59
GBlodgett
10.2k42035
edited Nov 11 '18 at 22:59
GBlodgett
10.2k42035
edited Nov 11 '18 at 22:59
GBlodgett
10.2k42035
10.2k42035
asked Nov 11 '18 at 22:50
user10610048user10610048
676
asked Nov 11 '18 at 22:50
user10610048user10610048
676
asked Nov 11 '18 at 22:50
user10610048user10610048
676
676
add a comment |
add a comment |
1 Answer
1
active
oldest
votes
get() returns a String in this case and then you call add() on the String returned by get(). The String class does not have an add() method, hence the undefined for type String error. I believe you simply wanted:
indirizzi.add(ind);
Which will add the user input to the List.
If you want to add at a specific index then use the set() method:
indirizzi.set(i, ind);
Which will set ind to the i'th index of indirizzi
answered Nov 11 '18 at 22:51
GBlodgettGBlodgett
10.2k42035
yeah but I wanted to add the string in that i position of the arraylist
– user10610048
Nov 11 '18 at 22:53
@user10610048add()adds the element to the end of the list so if theListis empty, then it will already be setting the elements to theithposition. If not then check my edit about theset()method
– GBlodgett
Nov 11 '18 at 22:55
add a comment |
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1 Answer
1
active
oldest
votes
1 Answer
1
active
oldest
votes
active
oldest
votes
active
oldest
votes
get() returns a String in this case and then you call add() on the String returned by get(). The String class does not have an add() method, hence the undefined for type String error. I believe you simply wanted:
indirizzi.add(ind);
Which will add the user input to the List.
If you want to add at a specific index then use the set() method:
indirizzi.set(i, ind);
Which will set ind to the i'th index of indirizzi
answered Nov 11 '18 at 22:51
GBlodgettGBlodgett
10.2k42035
yeah but I wanted to add the string in that i position of the arraylist
– user10610048
Nov 11 '18 at 22:53
@user10610048add()adds the element to the end of the list so if theListis empty, then it will already be setting the elements to theithposition. If not then check my edit about theset()method
– GBlodgett
Nov 11 '18 at 22:55
add a comment |
get() returns a String in this case and then you call add() on the String returned by get(). The String class does not have an add() method, hence the undefined for type String error. I believe you simply wanted:
indirizzi.add(ind);
Which will add the user input to the List.
If you want to add at a specific index then use the set() method:
indirizzi.set(i, ind);
Which will set ind to the i'th index of indirizzi
answered Nov 11 '18 at 22:51
GBlodgettGBlodgett
10.2k42035
yeah but I wanted to add the string in that i position of the arraylist
– user10610048
Nov 11 '18 at 22:53
@user10610048add()adds the element to the end of the list so if theListis empty, then it will already be setting the elements to theithposition. If not then check my edit about theset()method
– GBlodgett
Nov 11 '18 at 22:55
add a comment |
get() returns a String in this case and then you call add() on the String returned by get(). The String class does not have an add() method, hence the undefined for type String error. I believe you simply wanted:
indirizzi.add(ind);
Which will add the user input to the List.
If you want to add at a specific index then use the set() method:
indirizzi.set(i, ind);
Which will set ind to the i'th index of indirizzi
answered Nov 11 '18 at 22:51
GBlodgettGBlodgett
10.2k42035
get() returns a String in this case and then you call add() on the String returned by get(). The String class does not have an add() method, hence the undefined for type String error. I believe you simply wanted:
indirizzi.add(ind);
Which will add the user input to the List.
If you want to add at a specific index then use the set() method:
indirizzi.set(i, ind);
Which will set ind to the i'th index of indirizzi
answered Nov 11 '18 at 22:51
GBlodgettGBlodgett
10.2k42035
edited Nov 11 '18 at 22:54
answered Nov 11 '18 at 22:51
GBlodgettGBlodgett
10.2k42035
answered Nov 11 '18 at 22:51
GBlodgettGBlodgett
10.2k42035
answered Nov 11 '18 at 22:51
GBlodgettGBlodgett
10.2k42035
10.2k42035
yeah but I wanted to add the string in that i position of the arraylist
– user10610048
Nov 11 '18 at 22:53
@user10610048add()adds the element to the end of the list so if theListis empty, then it will already be setting the elements to theithposition. If not then check my edit about theset()method
– GBlodgett
Nov 11 '18 at 22:55
add a comment |
yeah but I wanted to add the string in that i position of the arraylist
– user10610048
Nov 11 '18 at 22:53
@user10610048add()adds the element to the end of the list so if theListis empty, then it will already be setting the elements to theithposition. If not then check my edit about theset()method
– GBlodgett
Nov 11 '18 at 22:55
yeah but I wanted to add the string in that i position of the arraylist
– user10610048
Nov 11 '18 at 22:53
yeah but I wanted to add the string in that i position of the arraylist
– user10610048
Nov 11 '18 at 22:53
@user10610048
add() adds the element to the end of the list so if the List is empty, then it will already be setting the elements to the ith position. If not then check my edit about the set() method– GBlodgett
Nov 11 '18 at 22:55
@user10610048
add() adds the element to the end of the list so if the List is empty, then it will already be setting the elements to the ith position. If not then check my edit about the set() method– GBlodgett
Nov 11 '18 at 22:55
add a comment |
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