Metodo Java para formatar matrizes em latex

Formatex.java

public class Formatex {
	public static void formatMatrix(int[][] inputArray2D) {
		assert (inputArray2D.length == inputArray2D[0].length && inputArray2D != null) : "BadInputArrayException";
		StringBuilder latex = new StringBuilder(
				"\\mathbf{G}_x = \\begin{bmatrix} ");
		for (int i = 0; i < inputArray2D.length; i++) {
			for (int j = 0; j < inputArray2D[i].length; j++) {

				latex.append(inputArray2D[i][j]);
				if (j != inputArray2D[i].length - 1)
					latex.append(" & ");

				// if (inputArray2D[i][j] < 0)
				// out.print(" " + inputArray2D[i][j] + "  ");
				// else
				// out.print("  " + inputArray2D[i][j] + "  ");
			}
			if (i != inputArray2D.length - 1)
				latex.append(" \\\\ ");
			latex.append(" ");
		}
		latex.append("\\end{bmatrix}");

		out.println(latex);
	}
}

output

\mathbf{G}_x = \begin{bmatrix} 0 & 0 & 0 & 0 & 0 & 0 & 0 & 0 & 0 & 0 \\  0 & 0 & 0 & 0 & 0 & 0 & 0 & 0 & 0 & 0 \\  0 & 0 & 1 & 0 & 0 & 0 & 0 & 0 & 0 & 0 \\  0 & 0 & 0 & 1 & 0 & 0 & 0 & 0 & 0 & 0 \\  0 & 0 & 0 & 0 & 1 & 0 & 0 & 0 & 0 & 0 \\  0 & 0 & 0 & 0 & 0 & 1 & 0 & 0 & 0 & 0 \\  0 & 0 & 0 & 0 & 0 & 0 & 1 & 0 & 0 & 0 \\  0 & 0 & 0 & 0 & 0 & 0 & 0 & 1 & 0 & 0 \\  0 & 0 & 0 & 0 & 0 & 0 & 0 & 0 & 1 & 0 \\  0 & 0 & 0 & 0 & 0 & 0 & 0 & 0 & 0 & 1 \end{bmatrix}

\mathbf{G}_x = \begin{bmatrix} 1 & 0 & -1 \\  2 & 0 & -2 \\  1 & 0 & -1 \end{bmatrix}

\mathbf{G}_x = \begin{bmatrix} 1 & 2 & 1 \\  0 & 0 & 0 \\  -1 & -2 & -1 \end{bmatrix}

\mathbf{G}_x = \begin{bmatrix} -1 & 0 & 1 & 0 & 0 & 0 & 0 & 0 \\  -2 & -1 & 2 & 1 & 0 & 0 & 0 & 0 \\  -1 & -2 & 0 & 2 & 1 & 0 & 0 & 0 \\  0 & -1 & -2 & 0 & 2 & 1 & 0 & 0 \\  0 & 0 & -1 & -2 & 0 & 2 & 1 & 0 \\  0 & 0 & 0 & -1 & -2 & 0 & 2 & 1 \\  0 & 0 & 0 & 0 & -1 & -2 & 0 & 2 \\  0 & 0 & 0 & 0 & 0 & -1 & -2 & 0 \end{bmatrix}

\mathbf{G}_x = \begin{bmatrix} -1 & -2 & -1 & 0 & 0 & 0 & 0 & 0 \\  0 & -1 & -2 & -1 & 0 & 0 & 0 & 0 \\  1 & 2 & 0 & -2 & -1 & 0 & 0 & 0 \\  0 & 1 & 2 & 0 & -2 & -1 & 0 & 0 \\  0 & 0 & 1 & 2 & 0 & -2 & -1 & 0 \\  0 & 0 & 0 & 1 & 2 & 0 & -2 & -1 \\  0 & 0 & 0 & 0 & 1 & 2 & 0 & -2 \\  0 & 0 & 0 & 0 & 0 & 1 & 2 & 0 \end{bmatrix}

\mathbf{G}_x = \begin{bmatrix} 2 & 2 & 2 & 0 & 0 & 0 & 0 & 0 \\  2 & 2 & 4 & 2 & 0 & 0 & 0 & 0 \\  2 & 4 & 0 & 4 & 2 & 0 & 0 & 0 \\  0 & 2 & 4 & 0 & 4 & 2 & 0 & 0 \\  0 & 0 & 2 & 4 & 0 & 4 & 2 & 0 \\  0 & 0 & 0 & 2 & 4 & 0 & 4 & 2 \\  0 & 0 & 0 & 0 & 2 & 4 & 0 & 4 \\  0 & 0 & 0 & 0 & 0 & 2 & 4 & 0 \end{bmatrix}