Java Utililty Methods File Read

List of utility methods to do File Read

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Description

The list of methods to do File Read are organized into topic(s).

Method

StringgetFileContentFromClasspath(String pathToFile)
TODO 
return toString(getFileFromClasspath(pathToFile));
HashMapgetFileContentIntoStrCategoriesDictionary(String fileName)
get File Content Into Str Categories Dictionary 
FileReader file;
String line = "";
HashMap<String, Integer> dict = new HashMap<String, Integer>();
try {
    file = new FileReader(fileName);
    BufferedReader reader = new BufferedReader(file);
    try {
        while ((line = reader.readLine()) != null) {
...
longgetFileContentLength(String filename)
Returns the content length of the file named filename as long. 
return (new File(filename)).length();
ListgetFileContentList(String filenamePath)
Utility method to get the file content, any version of this can be adapted, this is just one way of achieving the result. 
InputStream is;
List<String> lines = new ArrayList<String>();
try {
    is = new FileInputStream(new File(filenamePath));
    DataInputStream in = new DataInputStream(is);
    BufferedReader br = new BufferedReader(new InputStreamReader(in));
    String strLine;
    while ((strLine = br.readLine()) != null) {
...
StringgetFileContentsAsString(@Nonnull final File file)
Gets the contents of a File as a String . 
checkNotNull(file, "file cannot be null.");
if (!file.exists()) {
    throw new IOException("File " + file + " does not exist");
if (!file.canRead()) {
    throw new IOException("Cannot read file " + file);
if (file.isDirectory()) {
...
List>getFileContentWithoutCRNL(File f, int linesPerElement, int[] setSizes)
get File Content Without CRNL 
List<Set<String>> setList = new ArrayList<Set<String>>();
List<String> lineList = new ArrayList<String>();
List<String> elementList = new ArrayList<String>();
BufferedReader input = null;
try {
    input = new BufferedReader(new InputStreamReader(new FileInputStream(f), "UTF-8"));
    String s = null;
    while ((s = input.readLine()) != null) {
...