Journal of Java /* freshly brewed code by Neil */

For, while, do while, if, if-then... These are all control statements. I'm at the part in my practice where loops come into play as well as controlling when instructions are executed.

The first exercise is a program which will sort three integers from largest to smallest. To do this I used a couple if and else-if statements.






/*
 * This program is meant to prompt the user for
 * three integers, sort those integers from
 * smallest to greatest and then display
 * those integers. It is also an example
 * of if/else control statements.
 */

package sortingthreeintegers;
import javax.swing.JOptionPane;

/**
 * @author Neil master coder
 */
public class Main {

    /**
     * @param args the command line arguments
     */


    public static void main(String[] args) {

        int num1=0, num2=0, num3=0;
        int smallest=0, middle=0, largest=0;

        for (int i=1; i<4; i++) {
        String stringNum = JOptionPane.showInputDialog(null,
                "Enter integer number " + i + " to be"
                + " evaluated." );

        if (i==1)
            num1=Integer.parseInt(stringNum);
            else if(i == 2)
            num2=Integer.parseInt(stringNum);
            else if(i == 3)
            num3=Integer.parseInt(stringNum);

        }

        if ((num1<=num2) && (num1<=num3)){
            smallest = num1;
            if (num2<=num3){
                middle=num2;
                largest=num3;}
            else {
                largest=num2;
                middle=num3;}
        }

        else if((num2 <= num1) && (num2 <= num3)){
            smallest=num2;
            if (num1
                middle=num1;
                largest=num3;}
        }

        else if((num3 <= num1) && (num3 <= num2)){
            smallest=num3;
            if (num2
                middle=num2;
                largest=num1;}
        }

        JOptionPane.showMessageDialog(null, "The numbers arranged "
        + "from smallest to largest are: "
        + smallest + " " + middle + " " +
        largest + ".");

   }


}