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[] args) {
    File f = new File("c:/test");
    FilenameFilter fileNameFilter = new FilenameFilter() {
        @Override/*w w w .j ava  2s  .  c  om*/
        public boolean accept(File dir, String name) {
            if (name.lastIndexOf('.') > 0) {
                int lastIndex = name.lastIndexOf('.');
                String str = name.substring(lastIndex);
                if (str.equals(".txt")) {
                    return true;
                }
            }
            return false;
        }
    };
    File[] paths = f.listFiles(fileNameFilter);
    for (File path : paths) {
        System.out.println(path);
    }
}

From source file:Main.java

public static void main(String[] args) throws Exception {

    // create new files
    File f = new File("test.txt");

    // create new file in the system
    f.createNewFile();//w  w  w  . j a v a 2  s .  com

    // tests if file exists
    boolean bool = f.exists();

    System.out.println("File exists: " + bool);

}

From source file:Main.java

public static void main(String[] args) throws Exception {
    File file = new File("C:/String.txt");
    StringBuffer strContent = new StringBuffer();
    FileInputStream fin = new FileInputStream(file);
    int ch;/*from ww  w.java  2 s. c  o m*/
    while ((ch = fin.read()) != -1) {
        strContent.append((char) ch);
    }
    fin.close();
    System.out.println(strContent);
}

From source file:Main.java

public static void main(String[] args) {

    // returns pathnames for files and directory
    File f = new File("C:/Texts/a/b/c");

    // create directories
    boolean bool = f.mkdirs();

    System.out.print("Directory created? " + bool);

}

From source file:Main.java

public static void main(String[] args) {

    // returns pathnames for files and directory
    File f = new File("C:/Texts");

    // create//from  w ww.  j a  va  2 s.com
    boolean bool = f.mkdir();

    System.out.print("Directory created? " + bool);

}

From source file:Main.java

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

    int ch;/*from  w  w  w.j  a v a2  s.  c om*/
    // skip first 10 bytes
    fin.skip(10);
    while ((ch = fin.read()) != -1) {
        System.out.print((char) ch);
    }
}

From source file:Main.java

public static void main(String[] args) {
    try {/*from  w  w w .j ava2s. c o  m*/
        PrintWriter pw = new PrintWriter(new File("c:/text.txt"), "ACSII");

        // append chars
        pw.append('H');
        pw.append('e');
        pw.append('l');
        pw.append('l');
        pw.append('o');

        // flush the writer
        pw.flush();
        pw.close();
    } catch (Exception ex) {
        ex.printStackTrace();
    }
}

From source file:Main.java

public static void main(String[] args) {
    try {//  w w  w . j  ava 2s .  co m
        PrintWriter pw = new PrintWriter(new File("c:/text.txt"));

        // append chars
        pw.append('H');
        pw.append('e');
        pw.append('l');
        pw.append('l');
        pw.append('o');

        // flush the writer
        pw.flush();
        pw.close();
    } catch (Exception ex) {
        ex.printStackTrace();
    }
}

From source file:Main.java

public static void main(String[] args) throws Exception {
    File file = new File("data.txt");
    Scanner scanner = new Scanner(file);
    while (scanner.hasNextLine()) {
        String line = scanner.nextLine();

        Scanner lineScanner = new Scanner(line);
        lineScanner.useDelimiter(",");
        while (lineScanner.hasNext()) {
            String part = lineScanner.next();
            System.out.print(part + ", ");
        }/* w w  w.  j  a va2  s.  co  m*/
        System.out.println();
    }
}

From source file:Main.java

public static void main(String[] args) throws Exception {
    File fileToChange = new File("C:/myfile.txt");

    Date filetime = new Date(fileToChange.lastModified());
    System.out.println(filetime.toString());

    System.out.println(fileToChange.setLastModified(System.currentTimeMillis()));

    filetime = new Date(fileToChange.lastModified());
    System.out.println(filetime.toString());

}