DoubleMatrix matrix = new DoubleMatrix(rows, columns);
DoubleMatrix result = matrix1.mmul(matrix2);
DoubleMatrix result = matrix.mmul(vector);
DoubleMatrix solution = Solve.solve(A, B);
ComplexDoubleMatrix eigenvalues = Eigen.eigenvalues(matrix);
System.setProperty("com.github.fommil.netlib.BLAS.threadsafe", "true");
System.setProperty("com.github.fommil.netlib.LAPACK.threadsafe", "true");
<dependency>
<groupId>com.github.fommil.netlib</groupId>
<artifactId>all</artifactId>
<version>1.1.2</version>
</dependency>