import java.util.ArrayList;

public class showArrayList {
	
	ArrayList<Integer> alint;
	ArrayList<Double> adoub;
	ArrayList<String> astring;
	ArrayList<Location> aloc;
	
	public class Location {

		int x;
		int y;
		
		public Location(int x, int y) {
			this.x = x;
			this.y = y;
		}
		public boolean equals (Object o) {
			Location p = (Location) o;
			if ((x == p.x) && (y == p.y))
				return true;
			else
				return false;
		}
		public String toString () {		return "(" + x + "," + y + ")";		}
	}
	
	private void showDeclarations() {
//		ArrayList<int> ar = new ArrayList<int>();   //uncomment this for error
		ArrayList<Integer> ar = new ArrayList<Integer>();
//		ArrayList ar = new ArrayList();  // Not a hard error, but not recommended
		this.alint = ar;
//
// Now for the rest		
		this.adoub = new ArrayList<Double>();
		this.astring = new ArrayList<String>();
		this.aloc = new ArrayList<Location>();
		return;
	}
	private void showDoubleMethods() {
		this.adoub.add(1.0);
		this.adoub.add(-1.0);
		System.out.println(this.adoub);
		this.adoub.add(1,0.0);
		System.out.println(this.adoub);
		this.adoub.remove(0);
		System.out.println(this.adoub);
		if (!this.adoub.contains(new Double(2.0)))
			System.out.println ("2.0 not found in array");
	}
	private void showPointMethods() {
		Location l;
		//Show adding then clearing
		System.out.println ("Show add, get,  indexOf, then clear");
		this.aloc.add(new Location(1,2));
		System.out.println (aloc);
		l = this.aloc.get(0);
		System.out.println ("get at index 0 = " + l);
		int index = this.aloc.indexOf(l);
		System.out.println ("The index of the Location " + l + "is " + index);
		this.aloc.clear();
		if (this.aloc.isEmpty()) System.out.println ("aloc is empty");
		System.out.println(aloc);
		index = this.aloc.indexOf(l);
		System.out.println ("The index of the Location " + l + "is " + index);
		
		//show contains
		Location l1 = new Location(0,0);
		Location l2 = new Location(0,0);
		System.out.println("\nShow equality/contains");
		if (l2 != l1) System.out.println ( "l1 != p2");
		if (l2.equals(l1)) System.out.println ("l1 .equals l2");
		this.aloc.add(l2); 
		System.out.println(aloc);
		if (aloc.contains(l1))
			System.out.println ("Contains check for loc = true");
		else
			System.out.println ("Contains check for loc = false");
		
		//lastIndexOf
		System.out.println ("\nShow lastIndexof");
		aloc.add(new Location(1,1));
		aloc.add(new Location(0,1));
		aloc.add(new Location(1,1));
		aloc.add(new Location(0,1));
		index = aloc.lastIndexOf(new Location(1,1));
		System.out.println ("The last index of (1,1) is " + index);
		System.out.println ("The size of aloc = " + aloc.size());
		
		//Remove
		System.out.println(aloc);
		aloc.remove(l1);
		System.out.println(aloc);
		aloc.remove(new Location(0,1));
		System.out.println(aloc);
		
		
		
	}
	
	private void showStrings() {
		astring.add("Yessir");
		if (astring.contains("Yessir"))
			System.out.println ("Contains check for Yessir = true");
		else
			System.out.println ("Contains check for Yessir = false");
	//	String s2a = "No";
		String s2b = "sir";
	//	String s2 = s2a + s2b;
		String s2 = "No" + s2b;
		astring.add(s2);
		String s1 = "Nosir";
		if (s2 != s1) System.out.println ("Strings are not equal");
		if (astring.contains(s1))
			System.out.println ("Contains check for Nosir = true");
		else
			System.out.println ("Contains check for Nosir = false");
	}
	public static void main(String[] args) {
	showArrayList s = new showArrayList();
	
	s.showDeclarations();
	System.out.println();
	s.showDoubleMethods();
	System.out.println();	
	s.showPointMethods();
	System.out.println();
	s.showStrings();

	}

}