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Extract String arrays from List

Developing a Java Android App but this is a straight up Java question i think.
I have List declared as follows;
List list= new ArrayList<String[]>();
I want to extract each String [] in a loop;
for(int i=0; i < list.size(); i++) {
//get each String[]
String[] teamDetails = (String[])list.get(i);
}
This errors, I am guessing it just doesn't like me casting the String[] like this.
Can anyone suggest a way to extract the String[] from my List?

Use a List<String[]> and you can use the more up-to-date looping construct:
List<String[]> list = new ArrayList<String[]>();
//I want to extract each String[] in a loop;
for ( String[] teamDetails : list) {
}
// To extract a specific one.
String[] third = list.get(2);

Try declaring the list this way
List<String[]> list = new ArrayList<>();
for(int i = 0; i < list.size(); i++) {
//get each String[]
String[] teamDetails = list.get(i);
}
Moreover the call of your size function was wrong you need to add the brackets

/*ArrayList to Array Conversion */
String array[] = new String[arrlist.size()];
for(int j =0;j<arrlist.size();j++){
array[j] = arrlist.get(j);
}
//OR
/*ArrayList to Array Conversion */
String frnames[]=friendsnames.toArray(new String[friendsnames.size()]);

In for loop change list.size to list.size()
And it works fine Check this https://ideone.com/jyVd0x

First of all you need to change declaration from
List list= new ArrayList<String[]>(); to
List<String[]> list = new ArrayList();
After that you can do something like
String[] temp = new String[list.size];
for(int i=0;i<list.size();i++)`
{
temp[i] = list.get(i);
}

Converting List<ArrayList> to String[]

I have a
List<ArrayList> arg = new ArrayList<ArrayList>();
with
[[logo], [cd_branche], [lib_branche]],
(other arguments not relevant)
[[1111,22222,3333]],[[2222,324,432]]...
and I want to cast it to a String[] so I did this
Object[] obj = arg.toArray();
String[] headers =new String[obj.length];
for(int i=0;i<headers.length;i++) {
headers[i]= (String) obj[i];
}
but I'm getting
java.util.ArrayList cannot be cast to java.lang.String
The output I'm looking for is
headers[0]=logo
headers[1]=cd_branche
headers[2]=lib_branche
Using Java 6

It sounds like you want it to be an array of strings (i.e. "[["logo", "cd_branche", "lib_cranche"],[..],[..],[1111,22222,3333],[2222,324,432]").
In that case simply do:
Object[] obj = arg.toArray();
String[] headers =new String[obj.length];
for(int i=0;i<headers.length;i++) {
headers[i]= Arrays.toString(obj);
}
And each one of your ArrayList objects inside obj will be returned in string array format.
UPDATE: Since you want it as a flat array, you'll need to (a) compute the size of the array needed and (b) run through your object with two loops and make a deep search as such:
int size = 0;
for (int i = 0; i < arg.size(); size += arg.get(i++).size());
String[] headers =new String[size];
for(int count = 0, i=0;i<arg.size();i++) {
for (int j=0; j< arg.get(i).size(); j++) {
headers[count++]= arg.get(i).get(j).toString();
}
}

String headers = "";
for (String header:arg)
{headers += header;}

ArrayList Cast in java Combo box

Hi there i have this code
public void comboCountry(List<Countries> cs) {
country = db.fillComboCountries();
DefaultComboBoxModel dcbm = (DefaultComboBoxModel) CountryComboBox.getModel();
for (int i = 0; i < country.size(); i++) {
String row[] = new String[country.size()];
//row[i] = String.valueOf(country.get(i).getCountryId());
row[i] = country.get(i).getCountryName();
// row[i] = country.get(i).getCountryCode();
dcbm.addElement(row);
}
}
with country = db.fillComboCountries(); i query the database and load everything into an ArrayList.
The Arraylist is country.
When i load my data into combobox i get
[Ljava.lang.String;#fdfc58
how can i avoid that and get the value that i want?
I have try with Arrays.tostring(), but i get also [ ].

Instead of dcbm.addElement(row); use dcbm.addElement(country.get(i).getCountryName());
With this, you will add individual elements of an array rather than array itself. Also you would avoid creating arrays with every item in the country list.

You are creating a new String array in each iteration, you should initialize the array before the for loop:
String row[] = new String[country.size()];
for (int i = 0; i < country.size(); i++) {
...
}
If you only want to add the countryName in each iteration, you don't need the array at all:
for (int i = 0; i < country.size(); i++) {
String countryName = country.get(i).getCountryName();
dcbm.addElement(countryName);
}
Or:
for (Country c : country) {
dcbm.addElement(c.getCountryName());
}

get String from ArrayList

How to get String from ArrayList if my code like
ArrayList<String> PItoList = new ArrayList();
for (int i = 0; i < AllPunchList.size(); i++) {
PItoList.add(AllPunchList.get(i).toString());
}
I want to split item in ArrayList one by one.

You could do something like this:-
for(String eachString : PItoList){
// eachString.split(regex);
}
Traverse through each element in the List and do whatever you want to do in with each Element!

Try this :-
ArrayList<String> PItoList = new ArrayList<String>();
for (int i = 0; i < AllPunchList.size(); i++) {
PItoList.add((String)AllPunchList.get(i));
}
In the above example I have printed all elements in ArrayList. In this manner you can get all elements.
Then why you need split ?
Hope it will help you.

how to convert the data stored in string to string array

I'm parsing an url using json. I'm getting the value of each tag and storing it in a string using getString in a for-loop.
What I want is to store the String value into a String array. I'm a noob as far as android development is concerned.
Below is the code:
JSONObject json = JsonFunctions.getJSONfromURL("http://www.skytel.mobi/stepheniphone/iphone/stephenFlickr.json");
try {
JSONArray boombaby=json.getJSONArray("items");
for(int i=0;i<boombaby.length();i++) {
JSONObject e = boombaby.getJSONObject(i);
mTitleName=e.getString("title");
String mTitleImage=e.getString("image");
}
}

Use a List to store your titles, and another to store your images. Or design a class holding two fields (title and image), and store instances of this class in a List:
List<String> titles = new ArrayList<String>();
List<String> images = new ArrayList<String>();
for (int i = 0; i < boombaby.length(); i++) {
JSONObject e = boombaby.getJSONObject(i);
titles.add(e.getString("title"));
images.add(e.getString("image"));
}
Read the Java tutorial about collections. This is a must-know.

My solution:
String[] convert2StringArr(String str)
{
if(str!=null&&str.length()>0)
{
String[] arr=new String[str.length()];
for(int i=0;i<str.length();i++)
{
arr[i]=new String(str.charAt(i)+"");
}
return arr;
}
return null;
}

List<String> titles = new ArrayList<String>();
List<String> images = new ArrayList<String>();
for (int i = 0; i < boombaby.length(); i++) {
JSONObject e = boombaby.getJSONObject(i);
titles.add(e.getString("title"));
images.add(e.getString("image"));
}
and then convert list to array:
String[] titleArray = (String[])titles.toArray(new titles[titles.size()]);
String[] imageArray = (String[])images.toArray(new titles[images.size()]);