import org.jblas.DoubleMatrix; public class MatrixMultiplication { public static void main(String[] args) { DoubleMatrix matrix1 = new DoubleMatrix(new double[][]{{1, 2}, {3, 4}}); DoubleMatrix matrix2 = new DoubleMatrix(new double[][]{{5, 6}, {7, 8}}); DoubleMatrix result = matrix1.mmul(matrix2); System.out.println("Result: "); System.out.println(result); } }