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[]) {
    Scanner input = new Scanner(System.in);

    int x;/*from w  w  w .ja  va 2s  . c  om*/
    int y;
    int z;
    int result;

    System.out.print("Enter first integer: ");
    x = input.nextInt();

    System.out.print("Enter second integer: ");
    y = input.nextInt();

    System.out.print("Enter third integer: ");
    z = input.nextInt();

    result = x * y * z;

    System.out.printf("Product is %d\n", result);

}

From source file:Main.java

public static void main(String[] args) {
    Scanner scn = new Scanner(System.in);
    String userName;//from w  ww .jav a2s.c o  m
    System.out.println("Enter your email address: ");
    userName = scn.findInLine(Pattern.compile("[a-z]+"));

    System.out.println(userName);
}

From source file:Main.java

public static void main(String[] ap) {
    int val;
    try {// w ww.ja v  a2s  . c om
        Scanner sc = new Scanner(System.in); // Requires J2SE 1.5
        val = sc.nextInt();
    } catch (NumberFormatException ex) {
        System.err.println("Not a valid number: " + ex);
        return;
    }
    System.out.println("I read this number: " + val);
}

From source file:Main.java

public static void main(String[] args) throws Exception {
    Scanner scanner = new Scanner(new File("c:/text.txt"));
    System.out.println(scanner.nextLine());

    scanner.close();/*from w w  w  .j a v  a2 s  . c  om*/
}

From source file:Main.java

public static void main(String[] args) {
    String str = "start 1 2 123455";
    Scanner sc = new Scanner(str);
    String param1 = sc.next();/*  ww w.  ja  v a2 s. c om*/
    int param2 = sc.nextInt();
    int param3 = sc.nextInt();
    int param4 = sc.nextInt();
    System.out.println(param1 + "\t" + param2 + "\t" + param3 + "\t" + param4);
}

From source file:Main.java

public static void main(String[] args) throws Exception {
    Scanner scanner = new Scanner(new FileInputStream("c:/text.txt"));
    System.out.println(scanner.nextLine());

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

From source file:MainClass.java

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

    Scanner src = new Scanner("1,2,3,4");

    src.useDelimiter(", *");
    System.out.println(src.delimiter());
}

From source file:MainClass.java

public static void main(String args[]) {
    Scanner input = new Scanner(System.in);

    int number1;// w w  w  . ja  v  a  2 s.  c  o m
    int number2;

    System.out.print("Enter first integer: "); // prompt 
    number1 = input.nextInt(); // read first number from user 

    System.out.print("Enter second integer: "); // prompt 
    number2 = input.nextInt(); // read second number from user 

    if (number1 == number2)
        System.out.printf("%d == %d\n", number1, number2);

    if (number1 != number2)
        System.out.printf("%d != %d\n", number1, number2);

    if (number1 < number2)
        System.out.printf("%d < %d\n", number1, number2);

    if (number1 > number2)
        System.out.printf("%d > %d\n", number1, number2);

    if (number1 <= number2)
        System.out.printf("%d <= %d\n", number1, number2);

    if (number1 >= number2)
        System.out.printf("%d >= %d\n", number1, number2);

}

From source file:Main.java

public static void main(String[] args) {
    System.out.println("Enter a string");
    Scanner input = new Scanner(System.in);
    String s1 = input.nextLine();
    s1 = s1.trim();/* w w  w  .  j av a 2 s  . co m*/
    int howLong = s1.length();

    for (int counter = 0; counter < howLong; counter++) {
        char ch = s1.charAt(counter);
        System.out.print(ch);
    }

}

From source file:Main.java

public static void main(String[] args) {

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

    Scanner scanner = new Scanner(s);

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

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