from org.ejml.simple import SimpleMatrix

S=SimpleMatrix([[1,2,3,4],[3,4,4,5],[3,3,3,1],[3,3,1,1]])
S.print()
S.print("%e")
S.print("%10.2f");

# save and read
S.saveToFileCSV("matrix_file.csv");
B = SimpleMatrix.loadCSV("matrix_file.csv");
# save in binary form
S.saveToFileBinary("matrix_file.data");
B=SimpleMatrix.loadBinary("matrix_file.data");