Java Utililty Methods BufferedReader Read

List of utility methods to do BufferedReader Read

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Description

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

Method

StringreadFile(File file)
read File 
StringBuilder sb = new StringBuilder();
FileReader fr = null;
BufferedReader br = null;
try {
    fr = new FileReader(file);
    br = new BufferedReader(fr);
    String line;
    while ((line = br.readLine()) != null) {
...
StringreadFile(File file)
read File 
BufferedReader reader = new BufferedReader(new FileReader(file));
String strLine;
StringBuilder sbString = new StringBuilder();
while ((strLine = reader.readLine()) != null) {
    sbString.append(strLine);
return sbString.toString();
StringreadFile(File file)
read File 
if (!file.exists())
    return null;
StringBuilder text = new StringBuilder("");
BufferedReader reader = new BufferedReader(new FileReader(file));
try {
    String line;
    while ((line = reader.readLine()) != null) {
        text.append(line);
...
StringreadFile(File file)
read File 
String allText = null;
try {
    FileReader fileReader = new FileReader(file);
    BufferedReader bufferedReader = new BufferedReader(fileReader);
    StringBuffer stringBuffer = new StringBuffer();
    String line;
    while ((line = bufferedReader.readLine()) != null) {
        stringBuffer.append(line);
...
StringreadFile(File file)
readFile read a file given File object and return the contents as a String 
StringBuffer sb = new StringBuffer();
BufferedReader br = new BufferedReader(new FileReader(file));
String str;
while ((str = br.readLine()) != null)
    sb.append(str);
br.close();
return sb.toString();
StringreadFile(File file, boolean useSystemLineSeparator)
read File 
StringBuffer stringBuffer = new StringBuffer();
try {
    BufferedReader in = new BufferedReader(new FileReader(file));
    try {
        int size = 0;
        char[] buff = new char[512];
        while ((size = in.read(buff)) >= 0) {
            stringBuffer.append(buff, 0, size);
...
double[][]readFile(File file, int header)
Generic function to read a text file into a double[][] with an arbitrary number of columns. 
double[][] output = null;
BufferedReader reader = null;
try {
    reader = new BufferedReader(new FileReader(file));
    for (int i = 1; i <= header; i++) {
        reader.readLine();
    String line = reader.readLine();
...
ArrayListreadFile(File filename)
reads file into ArrayList. 
ArrayList<String> lines = new ArrayList<String>();
try {
    BufferedReader br = new BufferedReader(new FileReader(filename));
    try {
        String line = "";
        while ((line = br.readLine()) != null) {
            lines.add(line);
        br.close();
    } catch (IOException e) {
        System.err.println("Read error " + e);
} catch (Exception e) {
    e.printStackTrace();
return lines;
StringBufferreadFile(File from)
Read the contents of a file into a StringBuffer 
BufferedReader in = new BufferedReader(new FileReader(from));
StringWriter sWriter = new StringWriter();
BufferedWriter out = new BufferedWriter(sWriter);
int c;
while ((c = in.read()) != -1)
    out.write(c);
in.close();
out.close();
...
StringreadFile(File in)
Reads a file and converts it to a String via a byte array and inputStream.available() I'm not positive that inputStream.available() works the same under multi-threading 
String line = null;
StringBuffer content = new StringBuffer("");
try {
    BufferedReader bReader = new BufferedReader(new FileReader(in));
    while ((line = bReader.readLine()) != null)
        content.append(line + "\n");
    bReader.close();
} catch (IOException ioe) {
...