"how to sort an arraylist by subclases" Code Answer's
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how to sort an arraylist by subclases
Foolish Ferret
on Mar 03, 2020
for (food f : foods)
{
if (f instanceof pudding)
puds.add(f);
else if (f instanceof breakfast)
wakeupjuices.add(f);
}Source: stackoverflow.com
how to sort an arraylist by subclases
Foolish Ferret
on Mar 03, 2020
public class food{
private String name;
public food(String name){
this.name = name;
}
}
public class pudding extends food{
public pudding(String name){
super(name);
}
}
public class breakfast extends food{
public breakfast(String name){
super(name);
}
}
public static void main(String args[]){
ArrayList<food> foods = new ArrayList();
foods.add(new food("Sausage"));
foods.add(new food("Bacon"));
foods.add(new pudding("cake"));
foods.add(new breakfast("toast"));
foods.add(new pudding("sponge"));
foods.add(new food("Rice"));
foods.add(new breakfast("eggs"));
ArrayList<pudding> puds = new ArrayList();
ArrayList<breakfast> wakeupjuices = new ArrayList();
for(food f : foods){
//if(f is pudding){puds.add(f);}
//else if(f is breakfast){wakeupjuices.add(f);}
}
}Source: stackoverflow.com
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