Example usage for java.io FileReader FileReader

Introduction

In this page you can find the example usage for java.io FileReader FileReader.

Prototype

public FileReader(FileDescriptor fd)

Source Link

Document

Creates a new FileReader , given the FileDescriptor to read, using the platform's java.nio.charset.Charset#defaultCharset() default charset .

Usage

From source file:Main.java

public static String getXMLString(String filePath) {
    StringBuffer sb = new StringBuffer();
    BufferedReader br = null;//from   w ww  . j a v  a  2s  .  c  om
    String line;
    try {
        br = new BufferedReader(new FileReader(filePath));
        while (true) {
            line = br.readLine();
            if (line == null) {
                break;
            }
            sb.append(line + "\n");
        }
    } catch (Exception e) {
        e.printStackTrace();
    }
    return sb.toString();
}

From source file:Main.java

public static String getStringByFile(File f) throws IOException {
    StringBuilder builder = new StringBuilder();
    BufferedReader br = new BufferedReader(new FileReader(f));
    String line;/*from   w  w w  . ja  va 2 s  .com*/
    while ((line = br.readLine()) != null) {
        builder.append(line);
    }
    br.close();
    return builder.toString();
}

From source file:SumLine.java

static void sumLines(String filename) throws IOException {
    LineNumberReader lnr = new LineNumberReader(new FileReader(filename));
    lnr.setLineNumber(1);/*  ww  w.j ava2s .  com*/
    StreamTokenizer stok = new StreamTokenizer(lnr);
    stok.parseNumbers();
    stok.eolIsSignificant(true);
    stok.nextToken();
    while (stok.ttype != StreamTokenizer.TT_EOF) {
        int lineno = lnr.getLineNumber();
        double sum = 0;
        while (stok.ttype != StreamTokenizer.TT_EOL) {
            if (stok.ttype == StreamTokenizer.TT_NUMBER)
                sum += stok.nval;
            stok.nextToken();
        }
        System.out.println("Sum of line " + lineno + " is " + sum);
        stok.nextToken();
    }
}

From source file:Main.java

public static String getProcessName(int pid) {
    BufferedReader reader = null;
    try {//from  w w w.j a va 2  s .c om
        reader = new BufferedReader(new FileReader("/proc/" + pid + "/cmdline"));
        String processName = reader.readLine();
        if (!TextUtils.isEmpty(processName)) {
            processName = processName.trim();
        }
        return processName;
    } catch (Throwable throwable) {
        throwable.printStackTrace();
    } finally {
        try {
            if (reader != null) {
                reader.close();
            }
        } catch (IOException exception) {
            exception.printStackTrace();
        }
    }
    return null;
}

From source file:Main.java

public static String xmlFileToString(String path) {
    FileReader reader = null;//from  ww  w .ja v a  2s . c  om
    StringBuilder sb = new StringBuilder();
    char[] buf = new char[1024];
    try {
        reader = new FileReader(path);
        int temp = 0;
        while ((temp = reader.read(buf)) != -1) {
            sb.append(String.valueOf(buf, 0, temp));
        }
    } catch (IOException e) {
        e.printStackTrace();
    } finally {
        try {
            reader.close();
        } catch (IOException e) {
            e.printStackTrace();
        }
    }
    return sb.toString();
}

From source file:Main.java

public static String readFile(File file) throws IOException {
    StringBuffer fileData = new StringBuffer(1000);
    BufferedReader reader = new BufferedReader(new FileReader(file));
    char[] buf = new char[1024];
    int numRead = 0;
    while ((numRead = reader.read(buf)) != -1) {
        String readData = String.valueOf(buf, 0, numRead);
        fileData.append(readData);/* w w  w  .  j  a  v a2s  .c om*/
        buf = new char[1024];
    }
    reader.close();
    return fileData.toString();
}

From source file:Main.java

public static String fileToString(String filePath) throws Exception {
    File f = new File(filePath);
    BufferedReader br = new BufferedReader(new FileReader(f));
    try {//  ww w .j  a  va 2 s.c om
        StringBuilder sb = new StringBuilder();
        String line = br.readLine();
        while (line != null) {
            sb.append(line);
            sb.append("\n");
            line = br.readLine();
        }
        return sb.toString();
    } finally {
        br.close();
    }
}

From source file:Main.java

public static String getEncoding(String f) {
    String encoding = "UTF-8";
    File file = new File(f);
    try {// ww w .  j av  a  2 s . c o  m
        BufferedReader reader = new BufferedReader(new FileReader(file));
        String xml = reader.readLine();
        reader.close();
        xml = xml.toLowerCase();
        int pos = xml.indexOf("encoding");
        if (pos < 0) {
            return encoding;
        }
        xml = xml.substring(pos + "encoding".length());
        pos = xml.indexOf("\"");
        xml = xml.substring(pos + 1);
        pos = xml.indexOf("\"");
        xml = xml.substring(0, pos).trim();
        return xml.toUpperCase();
    } catch (Exception ex) {
        ex.printStackTrace();
    }
    return encoding;
}

From source file:Main.java

public static String loadFileAsString(String filePath) throws java.io.IOException {
    StringBuffer fileData = new StringBuffer(1000);
    BufferedReader reader = new BufferedReader(new FileReader(filePath));
    char[] buf = new char[1024];
    int numRead = 0;
    while ((numRead = reader.read(buf)) != -1) {
        String readData = String.valueOf(buf, 0, numRead);
        fileData.append(readData);/*  w  w  w  .  java 2s. c  om*/
    }
    reader.close();
    return fileData.toString();
}

From source file:Main.java

public static String readFromSD(String fileName) throws Exception {
    File file = new File(Environment.getExternalStorageDirectory(), fileName);

    FileReader fr = new FileReader(file);
    BufferedReader br = new BufferedReader(fr);
    String line = null;//from   w  w  w.  j a va2 s. c  o m
    StringBuilder sb = new StringBuilder();

    while ((line = br.readLine()) != null) {
        sb.append(line);
    }
    return sb.toString();
}