How to filter an array in Java?

Question

How can I filter an array in Java?

I have an array of objects, for example cars:

Class:

public class Car{
    public int doors;
    public Ca         


        

Answer 1

You will need to create a new array anyway.

Vector vector = new Vector(array.length);

for (int i = 0; i < array.length; i++) {
    if (array[i].doors > 4) {
        vector.add(array[i]);
    }
}

Car[] result = new Car[vector.size()];
vector.copyInto(result);

This isn't quite efficient, though.