Java Utililty Methods BufferedReader Read

List of utility methods to do BufferedReader Read

  1. HOME
  2. Java
  3. B
  4. BufferedReader Read

Description

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

Method

StringreadFile(File file)
read File 
BufferedReader reader = new BufferedReader(new FileReader(file));
String line = null;
StringBuilder stringBuilder = new StringBuilder();
String ls = System.getProperty("line.separator");
try {
    while ((line = reader.readLine()) != null) {
        stringBuilder.append(line);
        stringBuilder.append(ls);
...
StringreadFile(File file)
Reads a file and returns its content as a String. 
BufferedReader reader = new BufferedReader(new FileReader(file));
String line = null;
StringBuilder stringBuilder = new StringBuilder();
String ls = System.getProperty("line.separator");
while ((line = reader.readLine()) != null) {
    stringBuilder.append(line);
    stringBuilder.append(ls);
reader.close();
return stringBuilder.toString();
StringreadFile(File file)
This method read a whole file and return the content. 
if (!file.exists()) {
    throw new IllegalArgumentException("Illegal path: unexisting '" + file.getPath() + "'");
if (!file.isFile()) {
    throw new IllegalArgumentException("Illegal path: not a dfile");
FileReader fr = null;
BufferedReader reader = null;
...
StringreadFile(File file)
read File 
BufferedReader in = new BufferedReader(new FileReader(file));
return readBuffer(in);
StringreadFile(File file)
read File 
StringBuffer buffer = new StringBuffer();
BufferedReader br = null;
try {
    br = new BufferedReader(new FileReader(file));
    String line;
    while ((line = br.readLine()) != null) {
        buffer.append(line);
} catch (IOException e) {
    System.err.println("Couldn't read file: " + file.getAbsolutePath());
    e.printStackTrace();
} finally {
    try {
        br.close();
    } catch (IOException e) {
        e.printStackTrace();
String result = buffer.toString();
result = result.toLowerCase();
return result;
StringreadFile(File file)
Read text from a file in one line. 
BufferedReader br = null;
try {
    br = new BufferedReader(new FileReader(file));
    StringBuilder sb = new StringBuilder(200);
    String line = null;
    while ((line = br.readLine()) != null) {
        sb.append(line);
        sb.append("\n"); 
...
StringreadFile(File file)
read File 
Objects.requireNonNull(file);
if (file.isDirectory()) {
    throw new IOException("This is a directory not a file.");
if (!file.exists()) {
    throw new IOException("Given file " + file.getName() + " doesn't exist.");
StringBuilder fileContentBuilder = new StringBuilder();
...
StringreadFile(File file)
read File 
return readAll(new FileReader(file));
StringreadFile(File file)
read File 
BufferedReader reader = new BufferedReader(new FileReader(file));
String line = null;
StringBuilder stringBuilder = new StringBuilder();
String ls = System.getProperty("line.separator");
while ((line = reader.readLine()) != null) {
    stringBuilder.append(line);
    stringBuilder.append(ls);
return stringBuilder.toString();
StringreadFile(File file)
read File 
try {
    FileReader fr = new FileReader(file);
    BufferedReader br = new BufferedReader(fr);
    StringBuffer fileRead = new StringBuffer("");
    String str = "";
    while ((str = br.readLine()) != null) {
        fileRead.append(str + "\r\n");
    br.close();
    String body = fileRead.toString();
    return body;
} catch (FileNotFoundException e) {
    e.printStackTrace();
} catch (IOException e) {
    e.printStackTrace();
return null;