Java Programming, Do While, If, Miles To Kilometer , Part 2

Use do while loop to repeat the program, to exit user enters - 1.0 And also if clause

Code below :


// Miles to kilometer example
// In part two we use do while to repeat the program
// and also if and else

// Use scanner class

import java.util.Scanner;

public class MilesKilometer2 {
public static void main(String[] args){

double miles ;

// use constant
final double MILES_TO_KILOMETER = 1.609 ;

//Initialize scanner class
Scanner newscan = new Scanner(System.in);


// To repeat use do while loop

do {

System.out.println("Miles to kilometer program \n Enter -1.0 to terminate ");
System.out.print("Enter miles value : ");

// Read miles value
miles = newscan.nextDouble();

// Print out the value

// if miles not equal to -1 print the kilometer value
if( miles != -1.0 )
{
System.out.println("Kilometer value is : " + (miles * MILES_TO_KILOMETER ) + "\n");
}
// say good bye
else {  System.out.println("Thank you, bye");}

} while(miles != -1.0); // loop will terminate if miles value is -1.0


}
}

Java Programming :How to add ten numbers using while loop and arrays.

Java Programming :How to add ten numbers using while loop and arrays.

Step 1:
declare and initialize 3 variables. integer i as counter and integer sum.

Step 2:
declare and initialize array integer type, size of the array is ten.

Step 3: while loop to generate the numbers and add the numbers.

Step 4:
Print out the result.

Full code below :


// How to add 10 numbers using while

public class AddTenNumbers{
public static void main(String[] args){
int i = 0 ; // as counter
int sum = 0 ; // sum up the total
int number[] = new int[10]; // use array to generate ten numbers

// use while to generate the numbers and sum up the numbers

while( i < 10){

// Generate the 10 numbers
number[i] = i + 1 ;

// SUm the numbers
sum = sum + number[i];

i++; // forget this

}

// Print the sum

System.out.println("SUmmation of 1 till 10 is : " + sum);

}
}