Happy Codings - Programming Code Examples
Html Css Web Design Sample Codes CPlusPlus Programming Sample Codes JavaScript Programming Sample Codes C Programming Sample Codes CSharp Programming Sample Codes Java Programming Sample Codes Php Programming Sample Codes Visual Basic Programming Sample Codes

Java Programming Code Examples

Java > Mathematics Code Examples


Horoscope Description: This program allows the user to input a number and compute for the factorial of the number. import javax.swing.*; import java.awt.event.*; import java.awt.*; public class Factorial extends JFrame { private JTextField txtNum; private JLabel lblNum, lblRes; private JButton btnCompute; public static int ComputeFactorial(int number) { int n = number-1; do { number = number*n; n--; }while(n>=1); return number; } public Factorial() { super("GUI Factorial"); Container c = getContentPane(); c.setLayout(new FlowLayout()); lblNum = new JLabel("Enter an integer: "); txtNum = new JTextField(10); lblRes = new JLabel(); btnCompute = new JButton("Compute"); btnCompute.addActionListener ( new ActionListener() { public void actionPerformed(ActionEvent e) { String str = txtNum.getText(); int tmp = Integer.parseInt(str); tmp = ComputeFactorial(tmp); lblRes.setText("The factorial of "+str+" is "+tmp); } } ); c.add(lblNum); c.add(txtNum); c.add(btnCompute); c.add(lblRes); setSize(200,150); show(); } public static void main(String args[]) { Factorial app = new Factorial(); app.setResizable(false); app.setLocation(400,200); app.addWindowListener ( new WindowAdapter() { public void windowClosing(WindowEvent e) { System.exit(0); } } ); } }