102 lines
4.3 KiB
Java
102 lines
4.3 KiB
Java
/******************************************************************************
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* Project: Point 1 *
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* Class Name: point1 *
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* Author: Amrit Panesar -ASP ,o/ *
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* Last Edited: 09/05/2012 *
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* Hours: 0.50 Hours *
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* Purpose: Blah. *
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******************************************************************************/
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import javax.swing.*;
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public class point1
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{
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public static void main(String[] args) //main
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{
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String sMessage01 = "This application will accept the input of the "
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+ "lengths of the sides of a triangle and determine if it is a right triangle.\n"
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+ "A triangle is a polygon with 3 sides and three angles.\n"
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+ "A triangle is considered right if one of the angles is 90 degrees.";
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String sMessage02 = "This program will determine weather or not a triangle is right.";
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JOptionPane.showMessageDialog(null, sMessage01, "Welcome",
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JOptionPane.PLAIN_MESSAGE);
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JOptionPane.showMessageDialog(null, sMessage02, "Welcome",
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JOptionPane.PLAIN_MESSAGE);
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String input = JOptionPane.showInputDialog("Please enter a side length.");
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double dSide01 = 0;
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try
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{
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dSide01 = Double.parseDouble(input);
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}
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catch (Exception e)
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{
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JOptionPane.showMessageDialog(null, "We're sorry, \""+input+"\" was"
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+ " an incorrect input.", "Error", JOptionPane.ERROR_MESSAGE);
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System.exit(0);
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}
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if (dSide01 < 0)
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{
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JOptionPane.showMessageDialog(null, "We're sorry, you cannot have a "
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+ "negative side length.", "Error", JOptionPane.ERROR_MESSAGE);
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System.exit(0);
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}
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input = JOptionPane.showInputDialog("Please enter a side length.");
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double dSide02 = 0;
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try
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{
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dSide02 = Double.parseDouble(input);
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}
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catch (Exception e)
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{
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JOptionPane.showMessageDialog(null, "We're sorry, \""+input+"\" was"
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+ " an incorrect input.", "Error", JOptionPane.ERROR_MESSAGE);
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System.exit(0);
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}
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if (dSide02 < 0)
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{
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JOptionPane.showMessageDialog(null, "We're sorry, you cannot have a "
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+ "negative side length.", "Error", JOptionPane.ERROR_MESSAGE);
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System.exit(0);
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}
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input = JOptionPane.showInputDialog("Please enter a side length.");
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double dSide03 = 0;
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try
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{
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dSide03 = Double.parseDouble(input);
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}
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catch (Exception e)
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{
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JOptionPane.showMessageDialog(null, "We're sorry, \""+input+"\" was"
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+ " an incorrect input.", "Error", JOptionPane.ERROR_MESSAGE);
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System.exit(0);
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}
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if (dSide03 < 0)
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{
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JOptionPane.showMessageDialog(null, "We're sorry, you cannot have a "
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+ "negative side length.", "Error", JOptionPane.ERROR_MESSAGE);
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System.exit(0);
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}
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// big ugly boolean.
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// IF (intFirstSide * intFirstSide == intSecondSide * intSecondSide + intThirdSide * intThirdSide) ||
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// (intSecondSide * intSecondSide == intFirstSide * intFirstSide + intThirdSide * intThirdSide)||
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// (intThirdSide * intThirdSide == intFirstSide * intFirstSide + intSecondSide * intSecondSide)
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dSide01 = Math.pow(dSide01, 2);
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dSide02 = Math.pow(dSide02, 2);
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dSide03 = Math.pow(dSide03, 2);
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if ((dSide01 == (dSide02 + dSide03)) ||
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(dSide02 == (dSide01 + dSide03)) ||
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(dSide03 == (dSide01 + dSide02)))
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{
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JOptionPane.showMessageDialog(null, "This is a right triangle.",
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"Thank You", JOptionPane.INFORMATION_MESSAGE);
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}
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else
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{
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JOptionPane.showMessageDialog(null, "This is NOT a right triangle.",
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"Thank You", JOptionPane.INFORMATION_MESSAGE);
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}
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System.exit(0);
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}
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} |