Android Utililty Methods Text File Read

List of utility methods to do Text File Read

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Description

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

Method

String[]readLines(String file)
Generic read line method implementation from a file. 
String line;
fr = new FileReader(file);
lines = new ArrayList<>();
lr = new LineNumberReader(fr);
while ((line = lr.readLine()) != null) {
    if (!line.startsWith("#") && !line.isEmpty()) {
        lines.add(line);
fr.close();
lr.close();
String[] ret = lines.toArray(new String[0]);
lines.clear();
lines = null;
fr = null;
lr = null;
return ret;
StringreadStringFromClasspath(String path, Class c)
Reads the entire InputStream and returns its content as a single String 
final InputStream is = c.getResourceAsStream(path);
return readStringFromBufferedReader(createBufferedUtf8Reader(is));
StringreadStringFromFile(String fileName)
Reads the entire file and returns its content as a single String 
return readStringFromBufferedReader(createBufferedUtf8Reader(fileName));
StringreadText(String path)
read Text 
InputStream resourceAsStream = FileUtil.class
        .getResourceAsStream(path);
BufferedReader br = new BufferedReader(new InputStreamReader(
        resourceAsStream, Charset.forName("UTF-8")));
StringBuffer sb = new StringBuffer();
String line = br.readLine();
while (line != null) {
    sb.append(line).append("\n");
...
StringreadTextFile(String filePath)
read Text File 
File textFile = new File(filePath);
BufferedReader in = null;
String text = null;
StringBuilder allText = new StringBuilder("");
try {
    in = new BufferedReader(new FileReader(textFile));
    while ((text = in.readLine()) != null) {
        allText.append(text).append("\n");
...
StringreadTextFile(String path)
Reads the contents of a text file into a String. 
StringBuilder contents = new StringBuilder();
String lineSep = System.getProperty("line.separator");
BufferedReader input = new BufferedReader(new FileReader(path));
try {
    String line;
    while ((line = input.readLine()) != null) {
        contents.append(line);
        contents.append(lineSep);
...
voidsetFileResourceText(String path, String content)
set File Resource Text 
BufferedWriter fileWriter = null;
try {
    fileWriter = new BufferedWriter(new FileWriter(path));
    fileWriter.write(content);
} finally {
    if (fileWriter != null) {
        fileWriter.close();
StringgetContent(String file, String encodType)
get Content 
StringBuffer content = new StringBuffer();
FileInputStream fis = new FileInputStream(file);
DataInputStream dis = new DataInputStream(fis);
BufferedReader br = new BufferedReader(new InputStreamReader(dis,
        encodType));
String line = null;
if ((line = br.readLine()) != null) {
    content.append(line);
...
StringgetString(File file)
Get string from file 
if (file == null)
    throw new NullPointerException("null file");
StringBuilder sb = new StringBuilder();
BufferedReader br = new BufferedReader(new FileReader(file));
String line;
while ((line = br.readLine()) != null) {
    sb.append(line);
    sb.append('\n');
...
StringreadFileSdcard(File file)
read File Sdcard 
String res = "";
FileInputStream fin = new FileInputStream(file);
int length = fin.available();
byte[] buffer = new byte[length];
fin.read(buffer);
res = EncodingUtils.getString(buffer, "UTF-8");
fin.close();
return res;
...