can you help me rewirte this from array implementation to array list implementation.

this is java.

package matrix;

/** * This class provides a data representation for the AbstractMatrix * implementation of the Matrix API. * It uses a two-dimensional array of integers to store matrix elements. * @author Your name and section here */ public class ArrayImplementation extends AbstractMatrix { /** * Creates an array representation of a matrix of integers. * Elements of the array are initialized to zero. * @param numRows the number of rows in the matrix * @param numColumns the number of columns in the matrix */ public ArrayImplementation (int numRows, int numColumns) { super(numRows, numColumns); elements = new int[numRows][numColumns]; for (int r = 0; r < numRows; r++) { for (int c = 0; c < numColumns; c++) { elements[r][c] = 0; } } }

/** * Gets the element at the indicated row and column in this matrix. * * @param row the row position for the element. * @param column the column position for the element. * @return the element at the indicated row and column * @throws MatrixException if row or column is out of range */ @Override public int get(int row, int column) { checkBounds(row, column); return elements[row][column]; }

/** * Sets the element at the indicated row and column in this matrix. * * @param row the row position for the element. * @param column the column position for the element. * @param element the value to set in the matrix * @throws MatrixException if row or column is out of range */ @Override public void set(int row, int column, int element) { checkBounds(row, column); elements[row][column] = element; }

/** * Adds this matrix to another. * * @param other the other matrix to add * @return a new matrix that is the sum of this matrix and other * @throws MatrixException if this matrix and the other matrix do not have * the same dimensions */ @Override public Matrix add(Matrix other) { Matrix sum = new ArrayImplementation(getNumRows(), getNumColumns()); add(this, other, sum); return sum; }

/** * Multiples this matrix by another. * * @param other the other matrix to multiply * @return a new matrix that is the product of this matrix and other * @throws MatrixException if the number of columns in this matrix does not * match the number of rows in the other */ @Override public Matrix multiply(Matrix other) { Matrix product = new ArrayImplementation(getNumRows(), other.getNumColumns()); multiply(this, other, product); return product; } private final int[][] elements; }