如何将图像添加到阵列？

Question

I am stuck on a project because I have no clue how to store a picture into an array .

I think it would go in this method

public Picture addPicture (Picture pictureAdded) {

  pRef = pictureAdded;
  return pRef;

}

Answer 1

you can store it just like you'd store any other object in an array

Picture [] parr = new Picture[5];
parr[0] = pictureAdded

Answer 2

There are two ways to do it:

Picture[] pictures = new Picture[5]; //This will make an array of 5 pictures
pictures[0] = pictureAdded;

You can also use a pre-made class in Java - ArrayList. This way you don't have to worry about array size:

ArrayList<Picture> pictures = new ArrayList<Picture>();
pictures.add(new Picture());
Picture pic = pictures.get(0); 

Answer 3

Java is object-oriented , which lets you take advantage of polymorphism to reuse code and concepts. Since Picture extends Object you can store it in an array like you would any other object.

Picture[] pictures = new Picture[10];
pictures[0] = pictureToAdd;

If you want to iterate through the array you can do:

for(Picture picture : pictures)
{
    // do stuff here
}

You can also put Picture objects into an ArrayList or any other data structure.

List<Picture> pictures = new ArrayList<Picture>();
pictures.add(pictureToAdd);