Hypotenuse of a right triangle

Hypotenuse of a right triangle

   March 31, 2018       Unknown

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Write an applet that reads in values for side1 and side2 from a JTextField object and performs the calculations with the hypotenuse method.

Note: Define a method hypotenuse that calculates the length of the hypotenuse of a right triangle when the lengths of the other two sides are given. The method should take two arguments of type double and return the hypotenuse as a double.

The Program

import java.awt.*;
import java.awt.event.*;

import javax.swing.*;

public class Hypotenus extends JApplet implements ActionListener {
 JLabel side1Label, side2Label, resultLabel;
 JTextField side1Field, side2Field, resultField;

 //create GUI Components
 public void init()
 {
  Container container = getContentPane();
  container.setLayout(new FlowLayout());
 
  side1Label = new JLabel("Enter side1:");
  side1Field = new JTextField(10);
  container.add(side1Label);
  container.add(side1Field);
 
  side2Label = new JLabel("Enter side2:");
  side2Field = new JTextField(10);
  container.add(side2Label);
  container.add(side2Field);
 
  side2Field.addActionListener(this);
 
  resultLabel = new JLabel ("Hypotenus is: ");
  resultField = new JTextField(15);
  resultField.setEditable(false);
  container.add(resultLabel);
  container.add(resultField);
 
 }

 public void actionPerformed (ActionEvent event)
 {
  double side1, side2, hypo = 0;
 
  side1 = Double.parseDouble(side1Field.getText());
  side2 = Double.parseDouble(side2Field.getText());
 
  showStatus("Calculating.........");
 
  hypo = hypotenus(side1, side2); //hypo calls method hypotenus to calculate and return result;
 
  showStatus("Done!");
  resultField.setText(Double.toString(hypo) );
 }

 public double hypotenus(double x, double y)
 {
  double result = Math.sqrt((x*x) + (y*y));
 
  return result;
 }

}