Example usage for java.util Scanner Scanner

Introduction

In this page you can find the example usage for java.util Scanner Scanner.

Prototype

public Scanner(ReadableByteChannel source)

Source Link

Document

Constructs a new Scanner that produces values scanned from the specified channel.

Usage

From source file:MainClass.java

public static void main(String args[]) {
    String instr = "Name: Joe Age: 28 ID: 77";

    Scanner conin = new Scanner(instr);

    conin.findInLine("Age:"); // find Age

    if (conin.hasNext())
        System.out.println(conin.next());
    else/*ww w  .  j  a va2s .  co m*/
        System.out.println("Error!");

}

From source file:Main.java

public static void main(String[] args) throws Exception {
    Scanner scanner = new Scanner(FileSystems.getDefault().getPath("logs", "access.log"));
    System.out.println(scanner.nextLine());

    scanner.close();/* ww w .j  a  va  2s.  c o m*/
}

From source file:Main.java

public static void main(String[] args) {

    String s = "java2s.com 1 + 1 = 2.0";

    Scanner scanner = new Scanner(s);

    // find a pattern of any letter plus "com"
    System.out.println(scanner.findInLine(Pattern.compile(".com")));

    // print the next line of the string
    System.out.println(scanner.nextLine());

    scanner.close();/*from  ww  w .  j a va2  s.c  o m*/
}

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 + ", ");
        }//from   w  w  w.ja  v  a 2s  . co  m
        System.out.println();
    }
}

From source file:Main.java

public static void main(String[] args) {

    String s = "java2s.com 1 + 1 = 2.0";

    Scanner scanner = new Scanner(s);

    System.out.println(scanner.hasNext(Pattern.compile(".com")));

    System.out.println(scanner.hasNext(Pattern.compile("1")));

    // print the rest of the string
    System.out.println(scanner.nextLine());

    scanner.close();//from  ww w . j  a  v a  2s.c  o m
}

From source file:Main.java

public static void main(String[] args) {

    String s = "java2s.com 1 + 1 = 2.0 ";

    Scanner scanner = new Scanner(s);

    // use US locale in order to be able to identify shorts in a string
    scanner.useLocale(Locale.US);

    while (scanner.hasNext()) {
        // check if the scanner's next token is a short
        System.out.println(scanner.hasNextShort());

        System.out.println(scanner.next());
    }//w ww. j  a  v a 2s .c o  m

    scanner.close();
}

From source file:Main.java

public static void main(String[] args) {

    String s = "java2s.com 1 + 1 = 2.0 true ";

    Scanner scanner = new Scanner(s);

    System.out.println(scanner.nextLine());

    // change the locale of the scanner
    scanner.useLocale(Locale.ENGLISH);

    // display the new locale
    System.out.println(scanner.locale());

    scanner.close();//from  w  w w .  ja  va2 s  .co m
}

From source file:Main.java

public static void main(String[] args) {

    String s = "java2s.com 1 + 1 = 2.0 1.3985";

    Scanner scanner = new Scanner(s);

    // assign locale as US to recognize double numbers in a string
    scanner.useLocale(Locale.US);

    while (scanner.hasNext()) {
        // check if the scanner's next token is a double
        System.out.println(scanner.hasNextDouble());
        System.out.println(scanner.next());
    }//from w  ww.  ja va 2s.  co m
    scanner.close();
}

From source file:Main.java

public static void main(String[] args) {

    String s = "java2s.com 1 + 1 = 2.0 true ";
    Scanner scanner = new Scanner(new StringReader(s));

    System.out.println(scanner.nextLine());

    // change the radix of the scanner
    scanner.useRadix(32);/*  www .j  a  va 2s .  co  m*/

    // display the new radix
    System.out.println(scanner.radix());

    scanner.close();
}

From source file:Main.java

public static void main(String[] args) {

    String s = "java2s.com 1 + 1 = 2.0";

    Scanner scanner = new Scanner(s);

    // check if the scanner's next token matches "c"
    System.out.println(scanner.hasNext("c"));

    // check if the scanner's next token matches "="
    System.out.println(scanner.hasNext("="));

    // print the rest of the string
    System.out.println(scanner.nextLine());
    scanner.close();//w w  w . j a  v  a  2  s .c  o  m
}