Example usage for java.io File File

Introduction

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

Prototype

public File(URI uri)

Source Link

Document

Creates a new File instance by converting the given file: URI into an abstract pathname.

Usage

From source file:Main.java

public static void main(String[] argv) throws Exception {
    File f = new File("C:\\test.txt");
    FileReader fr = new FileReader(f);
    BufferedReader br = new BufferedReader(fr);

    StringBuffer sb = new StringBuffer();
    String eachLine = br.readLine();

    while (eachLine != null) {
        sb.append(eachLine);//from   w  ww. j ava  2s . c o  m
        sb.append("\n");
        eachLine = br.readLine();
    }
    System.out.println(sb.toString());
}

From source file:Main.java

public static void main(String[] args) {
    File fileObject = new File("person.ser");

    try (ObjectInputStream ois = new ObjectInputStream(new FileInputStream(fileObject))) {

        Person p1 = (Person) ois.readObject();
        Person p2 = (Person) ois.readObject();
        Person p3 = (Person) ois.readObject();

        System.out.println(p1);//from www  .j a  v  a 2  s.com
        System.out.println(p2);
        System.out.println(p3);

    } catch (Exception e) {
        e.printStackTrace();
    }
}

From source file:Main.java

public static void main(String[] args) throws Exception {
    Document doc = Jsoup.parse(new File("t2.html"), "UTF-8");
    doc.select("area#area1").after("<area id=\"newArea\" />");
    System.out.println(doc.html());
}

From source file:Main.java

public static void main(String args[]) throws Exception {
    File file = new File(".");

    if (file.isDirectory()) {
        String[] files = file.list();
        for (int i = 0; i < files.length; i++)
            System.out.println(files[i]);
    } else {/*from w w w.  j  av  a 2s . co m*/
        FileReader fr = new FileReader(file);
        BufferedReader in = new BufferedReader(fr);
        String line;
        while ((line = in.readLine()) != null)
            System.out.println(line);
    }
}

From source file:Main.java

public static void main(String[] args) {
    File file = new File("xyz.txt");
    Formatter fm = null;//from w  w  w .  j  av  a 2s .  c  om
    try {
        // Create a Formatter that will write the output the file
        fm = new Formatter(file);

        // Formatting strings
        fm.format("%1$s, %2$s,  and  %3$s %n", "A", "B", "C");
        fm.format("%3$s, %2$s,  and  %1$s %n", "A", "B", "C");

        // Format more text here...
    } catch (FileNotFoundException e) {
        e.printStackTrace();
    } finally {
        if (fm != null) {
            fm.close();
        }
    }
}

From source file:Main.java

public static void main(String[] args) throws Exception {
    File file = new File("C:/ReadFile.txt");
    FileInputStream fin = new FileInputStream(file);

    BufferedInputStream bin = new BufferedInputStream(fin);
    while (bin.available() > 0) {
        System.out.println((char) bin.read());
    }//from w w w.java  2s. c  o m
    bin.close();
}

From source file:Main.java

public static void main(String[] args) throws Exception {
    ZipFile zipFile = new ZipFile(new File("testfile.zip"), ZipFile.OPEN_READ);
    ZipEntry entry = zipFile.getEntry("fileName");

}

From source file:Main.java

public static void main(String[] args) {
    final JFileChooser chooser = new JFileChooser(new File(".")) {
        public void approveSelection() {
            if (getSelectedFile().exists()) {
                super.approveSelection();
            } else
                System.out.println("File doesn't exist");
        }//from www  .  j a v  a 2 s  .c  o  m
    };

    chooser.addActionListener(e -> System.out.println(e));

    chooser.setSelectedFile(new File("something.txt"));
    int returnVal = chooser.showSaveDialog(null);

    if (returnVal == JFileChooser.APPROVE_OPTION) {
        System.out.println(chooser.getSelectedFile());
    }

}

From source file:Main.java

public static void main(String[] args) {
    String dirPath = "C:\\";
    File dir = new File(dirPath);

    // Create a file filter to exclude any .SYS file
    FileFilter filter = file -> {
        if (file.isFile()) {
            String fileName = file.getName().toLowerCase();
            if (fileName.endsWith(".sys")) {
                return false;
            }/*from w w  w  .  j ava  2  s  .c o  m*/
        }
        return true;
    };

    File[] list = dir.listFiles(filter);

    for (File f : list) {
        if (f.isFile()) {
            System.out.println(f.getPath() + "  (File)");
        } else if (f.isDirectory()) {
            System.out.println(f.getPath() + "  (Directory)");
        }
    }
}

From source file:Main.java

public static void main(String[] argv) throws Exception {
    JarFile jarfile = new JarFile(new File("filename.jar"), true, JarFile.OPEN_READ);

    JarEntry entry = jarfile.getJarEntry("fileName");

}