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
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
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
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 at 22:59
GBlodgett
9,21641633
9,21641633
asked Nov 11 at 22:50
user10610048
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
yeah but I wanted to add the string in that i position of the arraylist
– user10610048
Nov 11 at 22:53
@user10610048add()
adds the element to the end of the list so if theList
is empty, then it will already be setting the elements to theith
position. If not then check my edit about theset()
method
– GBlodgett
Nov 11 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
yeah but I wanted to add the string in that i position of the arraylist
– user10610048
Nov 11 at 22:53
@user10610048add()
adds the element to the end of the list so if theList
is empty, then it will already be setting the elements to theith
position. If not then check my edit about theset()
method
– GBlodgett
Nov 11 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
yeah but I wanted to add the string in that i position of the arraylist
– user10610048
Nov 11 at 22:53
@user10610048add()
adds the element to the end of the list so if theList
is empty, then it will already be setting the elements to theith
position. If not then check my edit about theset()
method
– GBlodgett
Nov 11 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
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
edited Nov 11 at 22:54
answered Nov 11 at 22:51
GBlodgett
9,21641633
9,21641633
yeah but I wanted to add the string in that i position of the arraylist
– user10610048
Nov 11 at 22:53
@user10610048add()
adds the element to the end of the list so if theList
is empty, then it will already be setting the elements to theith
position. If not then check my edit about theset()
method
– GBlodgett
Nov 11 at 22:55
add a comment |
yeah but I wanted to add the string in that i position of the arraylist
– user10610048
Nov 11 at 22:53
@user10610048add()
adds the element to the end of the list so if theList
is empty, then it will already be setting the elements to theith
position. If not then check my edit about theset()
method
– GBlodgett
Nov 11 at 22:55
yeah but I wanted to add the string in that i position of the arraylist
– user10610048
Nov 11 at 22:53
yeah but I wanted to add the string in that i position of the arraylist
– user10610048
Nov 11 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 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 at 22:55
add a comment |
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