Re: Sorting of array lists

[Nicolas De Loof]

Use Collections.sort(list, new Comparator() {...});

or Collections.sort(list) if your Plan class implements Comparable

Nico.

Krishna Mohan Radhakrishnan a écrit :

Hi all,

I have a doubt regarding sorting in array List.

I have an array List  which contains array list objects of type Plan.

The Plan object contains 3 variables : plantitle ,plandescription and
planname.

I have to sort the arraylist based on the plantitle first and then based
on the plandescription.

ArrayList list = new ArrayList();
Plan planobj = null;
For (i= 1, i<=100, i++){
planObj = readPlanObjectFromDB();
list.add(planObj);

}

//?? Now how to sort it

Private Plan readPlanObjectFromDB(){
//queries the database to return plan object

return plan;
}

I am totally confused. Even if use bubble sorting it will cause a lot of
performance issues.

Could any one please suggest me a good method?

Regards,
Krishna Mohan

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