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:Main.java

public static void main(String[] args) {

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

    Scanner scanner = new Scanner(s);

    while (scanner.hasNext()) {

        // if the next is a int, print found and the int with radix 4
        if (scanner.hasNextInt()) {
            System.out.println("Found :" + scanner.nextInt(4));
        }// www.  j a  v a 2s.  c  o m
        System.out.println("Not Found :" + scanner.next());
    }

    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);

    while (scanner.hasNext()) {

        // if the next is BigInteger, print "Found" and the Integer
        if (scanner.hasNextBigInteger()) {
            System.out.println("Found :" + scanner.nextBigInteger());
        }//w ww .ja  va 2 s.co  m

        // if a BigInteger is not found, print "Not Found" and the token
        System.out.println("Not Found :" + scanner.next());
    }
    scanner.close();
}

From source file:Main.java

public static void main(String[] args) {

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

    Scanner scanner = new Scanner(s);

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

    // check if there is a next line again
    System.out.println(scanner.hasNextLine());

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

    // check if there is a next line again
    System.out.println(scanner.hasNextLine());

    scanner.close();/*from w  w  w  .  j a va  2  s .  co  m*/
}

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);

    while (scanner.hasNext()) {

        // if the next is byte with radix 7, print found and the byte
        if (scanner.hasNextByte()) {
            System.out.println("Found :" + scanner.nextByte(7));
        }/*from w w  w. j av  a 2 s.  c  o m*/

        // if a Byte is not found, print "Not Found" and the token
        System.out.println("Not Found :" + scanner.next());
    }

    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);

    while (scanner.hasNext()) {

        // if the next is BigDecimal, print found and the decimal
        if (scanner.hasNextBigDecimal()) {
            System.out.println("Found :" + scanner.nextBigDecimal());
        }//from   ww w  .  j a  va2 s.  c  o  m

        // if a BigDecimal is not found, print "Not Found" and the token
        System.out.println("Not Found :" + scanner.next());
    }

    scanner.close();
}

From source file:Main.java

public static void main(String[] args) {

    String s = "Hello true World! 1 + 1 = 2.0 ";

    Scanner scanner = new Scanner(s);

    while (scanner.hasNext()) {

        // if the next is boolean, print found and the boolean
        if (scanner.hasNextBoolean()) {
            System.out.println("Found :" + scanner.nextBoolean());
        }//  ww  w . java 2  s .  c  om

        // if a boolean is not found, print "Not Found" and the token
        System.out.println("Not Found :" + scanner.next());
    }
    scanner.close();
}

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();
        System.out.println(line);
    }/*from   www  .j  a v  a 2  s . c  o m*/
}

From source file:Main.java

public static void main(String[] args) {

    String s = "java2s.com 3.12345f";

    Scanner scanner = new Scanner(s);

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

    while (scanner.hasNext()) {
        // check if the scanner's next token is a float
        System.out.println(scanner.hasNextFloat());
        System.out.println(scanner.next());
    }// ww  w  . j a v  a  2  s .co m
    scanner.close();
}

From source file:Main.java

public static void main(String[] args) {

    String s = "java2s.com 1 + 1 = 2.0 true 9000000000000000000000L";

    Scanner scanner = new Scanner(s);

    while (scanner.hasNext()) {
        System.out.println("Not Found :" + scanner.next());
        if (scanner.hasNextLong()) {
            System.out.println("Found :" + scanner.nextLong(20));
        }// w w  w. jav  a2s . c  om
    }
    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);

    scanner.useLocale(Locale.US);

    while (scanner.hasNext()) {
        // check if the scanner's next token is a short with a radix 4
        System.out.println(scanner.hasNextShort(4));

        System.out.println(scanner.next());
    }/*from w  w  w  .  j av a2s . co m*/

    scanner.close();
}