Scanner class java

1
JAVA Programming :
Scanner class
Handled By
Dr.T.Abirami
Associate Professor
Department of IT
Kongu Engineering College Perundurai
Dr.T.Abirami/Department of IT

User Input
2
 The Scanner class is used to get user
input, and it is found in
the java.util package.

Scanner class Methods
3
Method Description
nextBoolean() Reads a boolean value from the user
nextByte() Reads a byte value from the user
nextDouble() Reads a double value from the user
nextFloat() Reads a float value from the user
nextInt() Reads a int value from the user
nextLine()
next()
Reads a String value from the user
nextLong() Reads a long value from the user
nextShort() Reads a short value from the user

Example:
4
Class sample
{
Public static

Strings
 The String data type is used to store a
sequence of characters (text).
 String values must be surrounded by
double quotes:
Example
 String greeting = "Hello World";
System.out.println(greeting);
5

Example:
6
Class sample
{
Public static

import java.util.Scanner;
class GetInputData
{
public static void main(String args[])
{
int num;
float fnum;
String str;
Scanner in = new Scanner(System.in);
//Get input String
System.out.println("Enter a string: ");
str = in.nextLine();
System.out.println("Input String is: "+str);
//Get input Integer
System.out.println("Enter an integer: ");
num = in.nextInt();
System.out.println("Input Integer is: "+num);
//Get input float number
System.out.println("Enter a float number: ");
fnum = in.nextFloat();
System.out.println("Input Float number is: "+fnum);
}
}
7

Scanner class java

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