How can I split an ArrayList into multiple ArrayLists.
ArrayList < Person> pers = new ArrayList<Person>();
is like [Ram M sham m rani Fm]
I want to split this into [ Ram m] [sham m ] [Rani Fm].
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1What are the criteria to split? And what have you attempted?Jeroen Vannevel– Jeroen Vannevel2013-10-16 01:47:58 +00:00Commented Oct 16, 2013 at 1:47
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because to get namelist and category list separate. if i split like above then i will make later into arraylist of[ram,sham,rani] and [m m fm]user2042881– user20428812013-10-16 01:57:31 +00:00Commented Oct 16, 2013 at 1:57
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3 Answers
Take a look at ArrayUtils in the Commons. There are a few methods in there that would help you get to a nice clean solution:
aka SubArray()
Comments
Assuming list contains names first and then gender, you can do following.
for(int i=0; i< pers.size(); i+=2){
List<Person> subList = peers.subList(i,i+2);
System.out.println(subList);
}
Comments
class Person{
String name;
String sex;
public Person(String name, String sex) {
super();
this.name = name;
this.sex = sex;
}
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
public String getSex() {
return sex;
}
public void setSex(String sex) {
this.sex = sex;
}
@Override
public String toString() {
return name +" "+ sex ;
}
}
public class SplitArrayList {
public static void main(String[] args) {
ArrayList < Person> pers = new ArrayList<Person>();
pers.add(new Person("Ram", "M"));
pers.add(new Person("sham", "M"));
pers.add(new Person("rani", "FM"));
for (int i=0;i<pers.size();i++) {
List<Person> subList = pers.subList(i, i+1);
System.out.println(subList);
}
}
}
Output
[Ram M]
[sham M]
[rani FM]
answered Oct 16, 2013 at 2:01
Prabhakaran Ramaswamy
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3 Comments
user2042881
getting output like [ Ram m
Kanagavelu Sugumar
int i=0;i<pers.size();i= i+2 ....?
Prabhakaran Ramaswamy
@KanagaveluSugumar why i+2.....he needs one element in the sublist