import javax.swing.*;

public class A2Q2
{
	public static void main (String [] args)
	{

		String input;
		String output;

		char pick;

		double value;
                bool done = false;


		final char pH		 = 'A';
		final char HURRICANE = 'B';
		final char RITCHER	 = 'C';
		final char QUIT		 = 'X';


		while(!done){
		input = JOptionPane.showInputDialog ("Choose a scale:" 						+"\n"+
											 "A - pH Scale"	   						+"\n"+
											 "B - Simpson-Saffir Hurricane Scale" 	+"\n"+
											 "C - Ritcher Scale"					+"\n"+
											 "X - Quit");

		if(input == null || input.length() == 0){input = "null";
												 JOptionPane.showMessageDialog(null, "Please choose a scale");
												 System.out.println("Please choose a scale.");
					                          }

		input = input.toUpperCase();
		pick = input.charAt(0);



		if(pick == QUIT) {output = "ya, your welcome";
						 JOptionPane.showMessageDialog (null, output);
						 System.out.println (output);
}

		else if(pick == pH)
			{input = JOptionPane.showInputDialog ("Enter the pH value");
			 value = Double.parseDouble(input);

				if(value<0 || value>14) {output = "The pH value you have input is invalid";
										 JOptionPane.showMessageDialog (null, output);
										 System.out.println (output);}
					else if(value>=0 && value<7){output = "A pH of " + value + " is acidic";
										 		 JOptionPane.showMessageDialog (null, output);
										 		 System.out.println (output);}
						else if(value == 7) {output = "A pH of 7 is neutral";
											 JOptionPane.showMessageDialog (null, output);
											 System.out.println (output);}
							else if(value>7 && value<=14) {output = "A pH of " + value + " is basic";
											 JOptionPane.showMessageDialog (null, output);
											 System.out.println (output);}

							}


		if(pick == HURRICANE)
			{input = JOptionPane.showInputDialog ("Enter a Wind speed");
			 value = Double.parseDouble(input);

			 	if(value<0) {output = "This scale doesn't measure vacuums...";
							 JOptionPane.showMessageDialog (null, output);
							 System.out.println (output);}

			 		else if(value>0 && value<63) {output = "Tropical depression";
											      JOptionPane.showMessageDialog (null, output);
											      System.out.println (output);}

			 			else if(value>=63 && value<=118) {output = "Tropical Storm";
											              JOptionPane.showMessageDialog (null, output);
											              System.out.println (output);}

			 				else if(value>=119 && value<=153) {output = "Hurricane Category: 1"+"\n"+
			 				                                            "No real damage to building structures.";
			 				                                   JOptionPane.showMessageDialog (null, output);
											                   System.out.println (output);}



			 					else if (value>=154 && value<=177) {output =
			 					                                    "Hurricane Category: 2"+"\n"+ "Some roofing material, door and window damage.";
											                        JOptionPane.showMessageDialog (null, output);
											                        System.out.println (output);}

			 						else if(value>=178 && value<=209) {output =
			 						                                   "Hurricane Category: 3"+"\n"+ "Mobile homes are destroyed; flooding near the coast destroys smaller structures.";
											                           JOptionPane.showMessageDialog (null, output);
											                           System.out.println (output);}

			 							else if(value>=210 && value<=249) {output =
			 							                                   "Hurricane Category: 4"+"\n"+ "Major erosion of beach areas; terrain may be flooded well inland.";
											                               JOptionPane.showMessageDialog (null, output);
											                               System.out.println (output);}

			 								else if(value>249) {output =
			 								                    "Hurricane Category: 5"+"\n"+ "Complete roof failure on many residences; massive evacuation of residential areas may be required";
											                    JOptionPane.showMessageDialog (null, output);
											                    System.out.println (output);}
																																	  }

		if(pick == RITCHER)
			{input = JOptionPane.showInputDialog ("Enter a Richter value");
			 value = Double.parseDouble (input);

				if(value<0) {output = "Invalid input";
				             JOptionPane.showMessageDialog (null, output);
				             System.out.println (output);}

					else if(value<2) {output = "Richter Magnitude: "+ value
					                           +"\n"+ "Microearthquake"
					                           +"\n"+ "Microearthquake; not felt";
							          JOptionPane.showMessageDialog (null, output);
									  System.out.println (output);}

						else if(value>=2 && value<=2.9) {output = "Richter Magnitude: "+ value
						                                          +"\n"+ "Very Minor earthquake"
						                                          +"\n"+ "generally not felt, but recorded";
											             JOptionPane.showMessageDialog (null, output);
											             System.out.println (output);}

							else if(value>=3 && value<=3.9) {output = "Richter Magnitude: "+ value
															 +"\n"+ "Minor earthquake"
															 +"\n"+ "Often felt but rarely causes damage";
											              	 JOptionPane.showMessageDialog (null, output);
											              	 System.out.println (output);}

								else if(value>=4 && value <= 4.9) {output = "Richter Magnitude: "+ value
																			+"\n"+ "Light Earthquake"
																			+"\n"+ "noticeable shaking of indoor items; significant damage unlikely";
											              		   JOptionPane.showMessageDialog (null, output);
											              		   System.out.println (output);}

									else if (value>=5 && value<= 5.9) {output = "Richter Magnitude: "+ value
																				+"\n"+ "Moderate Earthquake"
																				+"\n"+ "can cause major damage to poorly constucted buildings, slight damage to well-designed buildings";
											              			   JOptionPane.showMessageDialog (null, output);
											              			   System.out.println (output);}

										else if(value>=6 && value<=6.9) {output = "Richter Magnitude: "+ value
																				  +"\n"+ "Strong"
																				  +"\n"+ "can be destructive in areas up to around 150km across";
											                             JOptionPane.showMessageDialog (null, output);
											             				 System.out.println (output);}

											else if(value>=7 && value<=7.9) {output = "Richter Magnitude: "+ value
																					  +"\n"+ "Major Earthquake"
																					  +"\n"+ "can cause serious damage over larger areas";
											              					 JOptionPane.showMessageDialog (null, output);
											              					 System.out.println (output);}

												else if(value>=8 && value <=8.9) {output = "Richter Magnitude: "+ value
												                                           +"\n"+ "Great Earthquake"
												                                           +"\n"+ "can cause serious damage in areas several hundred kilometres across";
											                                      JOptionPane.showMessageDialog (null, output);
											                                      System.out.println (output);}

													else if(value>=9) {output = "Richter Magnitude: "+ value
																				+"\n"+ "Rare great Earthquake"
																				+"\n"+ "devastating in areas several thousand kilometres across";
											             			   JOptionPane.showMessageDialog (null, output);
											              		   	   System.out.println (output);}
																														     }
																															    	  }


		System.out.println ("\n"+"Programmed by Christian Hall" +"\n"+
							"Date: 	2006-Oct-17"		        +"\n"+
							"***Ending of Processing***"              );

		System.exit(0);

	}
}