I Have a list which is in
[
[SAM, 12/01/2015, 9A-6P],
[JAM, 12/02/2015, 9A-6P]
]
I need to iterate it.I tried the below code
for (int i = 0; i < list4.size(); i++) {
System.out.println("List" + list4.get(i).toString());
}
//this is giving me [SAM, 12/01/2015, 9A-6P]
but I want to iterate the above one also [SAM, 12/01/2015, 9A-6P].
Can anybody have idea?
You can and should use the fact that every List is also an Iterable. So you can use this:
// Idk what you list actually contains
// So I just use Object
List<List<Object>> listOfLists;
for(List<Object> aList : listOfLists) {
for(Object object : aList) {
// Do whatever you want with the object, e.g.
System.out.println(object);
}
}
Tried your case with below example. Hope it helps
import java.util.ArrayList;
import java.util.List;
public class IterateList {
public static void main(String[] args) {
List<List<String>> myList = new ArrayList<List<String>>();
List<String> list1 = new ArrayList<String>();
list1.add("SAM");
list1.add("12/01/2015");
list1.add("9A-6P");
List<String> list2 = new ArrayList<String>();
list2.add("JAM");
list2.add("12/01/2015");
list2.add("9A-6P");
myList.add(list1);
myList.add(list2);
for (List list : myList) {
for(int i=0; i<list.size();i++){
System.out.println(list.get(i));
}
}
}
}
Output:
SAM
12/01/2015
9A-6P
JAM
12/01/2015
9A-6P
list4is a terrible name for a variable, try to find something more descriptive. 3] If possible, you should be de-serializing what is obviously some form of data into a better object. For one thing, it would help to make your dates unambiguous.