Import java
import java.util.*; //NEED TO IMPORT THE UTIL PACKAGE FOR THE SCANNER
public class Main
{
public static void main(String args[])
{
Scanner in = new Scanner(System.in); //Create a scanner object called in to read a line of input from the
keyboard
System.out.print("Enter your name: ");
String name = in.next(); // scan in a string of text with scanner object in, store it in name
System.out.println("Name: " + name); //enters a single word
//use in.nextLine( ); to read in a line of text (multiple words)
System.out.print("Enter your age: ");
int i = in.nextInt(); //scan in an integer with scanner object in, store it in variable i
System.out.println("Age: " + i);
System.out.print("Enter your salary: ");
double d = in.nextDouble(); //scan in a double with scanner object in, store it in variable d
System.out.println("Salary: " + d);
in.close(); //close the scanner object. Can no longer read from keyboard
}
}
/*note the same scanner object, in this case called in can read in any type of data from the keyboard. You must just make sure you store the scanned line of input into the correct variable type. You no longer have to do parsing. The data is stored correctly based on the method you use.
To summarize. To create a scanner object called XYZ Scanner XYZ = new Scanner(System.in);
To read a String from the keyboard XYZ.next ( );
To read an integer from the keyboard XYZ.nextInt( );
To read a decimal from the keyboard XYZ.nextDouble( );
To read in an entire line of text
from the keyboard. XYZ.nextLine( );
Make sure when you scan the input in, they are stored in the correct data type.
For example String s1 = XYZ.next( );
Or String s2 = XYZ.nextLine( ); for multiple words.
int x = XYZ.nextInt( );
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