<dependency> <groupId>org.jblas</groupId> <artifactId>jblas</artifactId> <version>1.2.4</version> </dependency> gradle implementation 'org.jblas:jblas:1.2.4' import org.jblas.DoubleMatrix; public class MatrixExample { public static void main(String[] args) { DoubleMatrix matrix1 = new DoubleMatrix(new double[][]{{1.0, 2.0, 3.0}, {4.0, 5.0, 6.0}}); DoubleMatrix matrix2 = new DoubleMatrix(new double[][]{{7.0, 8.0}, {9.0, 10.0}, {11.0, 12.0}}); DoubleMatrix sum = matrix1.add(matrix2); System.out.println(sum); DoubleMatrix product = matrix1.mmul(matrix2); System.out.println(product); } }