Miscellany

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package question2;
import javax.swing.JOptionPane;
import java.math.*;
import java.lang.*;
/**
 *
 * @author crusoe
 */
public class Question2 {

    /**
     * @param args the command line arguments
     */
    public static void main(String[] args) {
        // TODO code application logic here
        String      numA, numB, numC;
        double         a, b, c, x1, x2;
        
        numA = JOptionPane.showInputDialog("Enter a double for A");
        numB = JOptionPane.showInputDialog("Enter a double for B");
        numC = JOptionPane.showInputDialog("Enter and double for C");
        
        a = Double.parseDouble (numA);
        b = Double.parseDouble (numB);
        c = Double.parseDouble (numC);
        
        x1 = ((- b) + (Math.sqrt(Math.pow(b, 2) - (4*a*c))) / (2*a));
        x2 = ((- b) - (Math.sqrt(Math.pow(b, 2) - (4*a*c))) / (2*a));
        
        JOptionPane.showMessageDialog(null, "The value of x1 is" + x1 + "and the value of x2 is " + x2);
    }
}