import javax.swing.JOptionPane;

public class eg16_PassObject
{
	public static void main (String[] args)
	{
		eg16_Rectangle mybox = new eg16_Rectangle("My Box", 12.0, 5.0); //create object
		displayRectangle (mybox);
		changeRectangle (mybox, 20, 10);
		displayRectangle (mybox);
		
		eg16_Rectangle myroom = new eg16_Rectangle("My Room", 100.0, 50.0); //create object
		displayRectangle (myroom);
		changeRectangle (myroom, 200.0, 150.0);
		displayRectangle (myroom);
		
		eg16_Rectangle mygym = get_eg16_Rectangle();
		displayRectangle (mygym);
		
		//last 2 exercises, do toString first in eg_16_Rectangle.java
		//if you write a toString method for a class, Java will automatically call
		//the method when the object is passed as an argument to print or println
		
		System.out.println(mygym);
		
		//compare 2 objects using equals method
		if (mygym.equals(myroom)) 
			System.out.println("\nmygym & myroom: both objects are the same");
		else
			System.out.println("\nmygym & myroom: both objects are different");
			
		System.out.println();
		//use copy constructor to copy an object	
		eg16_Rectangle car1 = new eg16_Rectangle("My Car", 30, 20); 	
		displayRectangle (car1);
		eg16_Rectangle car2 = new eg16_Rectangle(car1);
		displayRectangle (car2);
		if (car1.equals(car2)) 
			System.out.println("\ncar1 & car2: both objects are the same");
		else
			System.out.println("\ncar1 & car2: both objects are different");
	}
	
	//pass object as an argument to method
	public static void displayRectangle(eg16_Rectangle r)
	{
		System.out.println(r.getName() + ": Length: "+ r.getLength() + " Width: " + r.getWidth());
	}
	
	public static void changeRectangle(eg16_Rectangle r, double myLen, double myWid)
	{
		r.setLenWid(myLen, myWid);
	}
	
	public static eg16_Rectangle get_eg16_Rectangle()		//return referece to object
	{
		String input, myName;
		double myLen, myWid;
		
		
		input = JOptionPane.showInputDialog ("Enter Name.");
		myName = input;
		input = JOptionPane.showInputDialog ("Enter Length.");
		myLen = Double.parseDouble (input);
		input = JOptionPane.showInputDialog ("Enter Width.");
		myWid = Double.parseDouble (input);
		
		return new eg16_Rectangle(myName, myLen, myWid);
		
	}
}