A- Getting Input from the Console - Scanner
1. Write a coding below and see the output:
(Text book: page 79- Listing 2.9)
import java.util.Scanner;
public class TestScanner {
public static void main(String args[]) {
Scanner scanner = new Scanner(System.in);
System.out.print("Enter an integer:");
int intValue=scanner.nextInt();
System.out.println("You entered the integer:"+ intValue);
System.out.print("Enter a double value:");
double doubleValue=scanner.nextDouble();
System.out.println("You entered the double value:"+ doubleValue);
System.out.print("Enter a string without space:");
String string=scanner.next();
System.out.println("You entered the string:" +string);
}
}
Output:
B- Displaying Text in a Message Dialog Box
- Write the code as below:
/* This application program display Welcome to Java! In a message dialog box.*/
import javax.swing.JOptionPane;
public class WelcomeInMessageDialogBox {
public static void main(String [] args) {
//Display Welcome to Java! In a message dialog box
JOptionPane.showMessageDialog (null, “Welcome to Java!”, “Display Message”, JOptionPane.INFORMATION_MESSAGE);
}
}
C- Getting Input from the Console - MyInput
public class task1a
{
public static void main (String [] args)
{
System.out.print("Enter measure in inch:");
double inche = MyInput.readDouble();
double cm = 2.54 *inche;
double feet = cm * 12;
System.out.println("Converting from " + inche + " Inch to feet is " + feet);
}
}
