Java Utililty Methods Scanner Read

int rows = reader.nextInt();
int cols = reader.nextInt();
double[][] ret = new double[rows][cols];
for (int i = 0; i < rows; i++) {
    for (int j = 0; j < cols; j++) {
        ret[i][j] = Double.parseDouble(reader.next());
return ret;

int dim = reader.nextInt();
int[] ret = new int[dim];
for (int i = 0; i < dim; i++) {
    ret[i] = Integer.parseInt(reader.next());
return ret;

int[] dim = new int[numberOfDim];
for (int i = 0; i < dim.length; i++) {
    dim[i] = Integer.parseInt(reader.next());
return dim;

if (dim.length == 1) {
    for (int i = 0; i < dim[0]; i++) {
        ((double[]) nmatrix)[i] = reader.nextDouble();
} else {
    int[] newDim = Arrays.copyOfRange(dim, 1, dim.length);
    for (int i = 0; i < dim[0]; i++) {
        loadNDimDoubleMatrixRec(reader, newDim, ((Object[]) nmatrix)[i]);
...

Map<Integer, String> res = new HashMap<Integer, String>();
try (Scanner in = new Scanner(new FileReader(path))) {
    int index = 0;
    while (in.hasNextLine()) {
        String line = in.nextLine();
        res.put(index++, line);
} catch (FileNotFoundException e) {
...

Scanner sc = null;
try {
    sc = new Scanner(file);
    List<Integer> temp = new ArrayList<Integer>();
    while (sc.hasNextInt()) {
        temp.add(sc.nextInt());
    int[] assignments = new int[temp.size()];
...

InputStream stream = resourceClass.getResourceAsStream("/" + fileName);
if (stream == null) {
    throw new IOException("Cannot find file: " + fileName);
return new Scanner(stream).useDelimiter("\\A").next();

Scanner scanner = new Scanner(file);
scanner.useDelimiter("\n");
List<Double[]> valuesList = new ArrayList<Double[]>();
while (scanner.hasNext()) {
    String[] tokens = scanner.next().split(delimeter);
    Double[] curVal = new Double[3]; 
    for (int i = 0; i < curVal.length; i++) {
        curVal[i] = Double.valueOf(tokens[i]);
...

try {
    return Double.parseDouble(new Scanner(System.in).nextLine());
} catch (NumberFormatException e) {
    return null;

return new Scanner(clazz.getResourceAsStream(f)).useDelimiter("\\Z").next();