Drawing Objects on Screen

[Gravity Games]

For some reason, I'm having a hard time drawing objects on screen. Here's my code:

Level.java

package com.gravitygamesinteractive.kylethecaiman;
 
import java.awt.*;
import java.util.*;
import java.io.File;
 
public class Level {
	public Tile tile;
	private Scanner s;
	private int objectId;
	private int spx;
	private int spy;
	private String oidstr;
	private String xstr;
	private String ystr;
	private ArrayList<String> objarray= new ArrayList<String>();
	private ArrayList<String> xarray= new ArrayList<String>();
	private ArrayList<String> yarray= new ArrayList<String>();
	public Level(){
		setStage();
	}
 
	public void tick(){
 
	}
 
	public void render(Graphics g){
	}
 
	public void setStage(){
		tile=new Tile(0,0);
		tile=new Tile(0,0);
		}
	}
}

Tile.java:

package com.gravitygamesinteractive.kylethecaiman;
 
import java.awt.*;
 
import javax.swing.JFrame;
 
public class Tile extends Rectangle{
	private static final long serialVersionUID=1L;
	public Tile(int x, int y){
		this.x=x;
		this.y=y;
	}
	public void render(Graphics g){
		g.setColor(Color.red);
		g.drawRect(x,y,16,16);
	}
}

The problem is that the Tile object will only be created at the last instance of "tile=new Tile". I can't seem to figure out how to create them both. Just writing new Tile doesn't work either, as the objects won't draw.

[Gravity Games]

I figured out I need an arraylist to create more than one of the same object. Unfortunately, I can't figure out how to call the render method on each individual object. Here's what I'm got:

Level.java:

package com.gravitygamesinteractive.kylethecaiman;
 
import java.awt.*;
import java.util.*;
import java.io.File;
 
public class Level {
	public ArrayList<Tile> tile=new ArrayList<Tile>();
	private Scanner s;
	private int objectId;
	private int spx;
	private int spy;
	private String oidstr;
	private String xstr;
	private String ystr;
	private ArrayList<String> objarray= new ArrayList<String>();
	private ArrayList<String> xarray= new ArrayList<String>();
	private ArrayList<String> yarray= new ArrayList<String>();
	public Level(){
        setStage();
	}
 
	public void tick(){
 
	}
 
	public void render(Graphics g){
		for(int d=0;d<tile.size();d++){
			tile<Tile>.render(g);
		}
	}
	public void setStage(){
		tile.add(new Tile(0,0));
		tile.add(new Tile(0,0));
                }
	}
}

[curmudgeon]

You would draw your image in the paintComponent(...) method of a JPanel or other JComponent derived class. You could loop through your ArrayList in this paintComponent method.

[Gravity Games]

How would I do that? Level.java's draw method is called by a JPanel if thats what you mean.

[curmudgeon]

How would I do that? Level.java's draw method is called by a JPanel if thats what you mean.

Have you gone through the Swing graphics/drawing tutorial? I'm meaning nothing more than is described there.

Your levels are held by a class derived from JComponent correct? Simply draw the level in that object's paintComponent method. The background image would likely be in a BufferedImage, and the sprites would be drawn individually by going through the array list.

[Gravity Games]

Oh, I'm already doing that (I had no problem when drawing one object), the problem is defining the individual objects of the arraylist. For example:

The array list contains (Object 1, object 2, object 3)

and the loop needs to do this:

object1.render
object2.render
object3.render

How do I call the objects in the ArrayList of Tile objects?

[curmudgeon]

In the paintComponent method, loop through the ArrayList calling render on the components in the list, passing in the Graphics object.

[Gravity Games]

Ah, thank you. I had forgot to use .get to access the components. That was the problem.