Java: Bidimensional Array with methods/capabilities similar to ArrayList

Question

I want to create an XY array of integers (or whatever type), but I want to use methods like "add", "remove", "contains", "indexOf" similar to ArrayList class.

Is there any existing class with these capabilities?

PS: I don't want to create an ArrayList of ArrayList

Answer 1

No, AFAIK there isn't any class like this. But Implementing one should be fairly easy:

class BiDimensionalArray<T>{
  Object[][] backupArray;
  int lengthX;
  int lengthY;

  public BiDimensionalArray(int lengthX, int lengthY) {
    backupArray = new Object[lengthX][lengthY];
    this.lengthX = lengthX;
    this.lengthY = lengthY;
  }

  public void set(int x, int y, T value){
    backupArray[x][y] = value;
  }

  public T get(int x, int y){
    return (T) backupArray[x][y];
  }

  public void addX(T[] valuesY) {
    Object[][] newArray = new Object[lengthX+1][lengthY];
    System.arraycopy(backupArray, 0, newArray, 0, lengthX);
    newArray[lengthX]=valuesY;
    backupArray = newArray;
    lengthX = lengthX+1;
  }
}

Note: The Typeparameter isn't used internally, because there is no such thing as new T[][]

EDITS
Added addX Method for demonstration
Fixed compile-errors