specifying which image to draw with drawimage with a string

[natdizzle]

say i have "1.png" and integer x = 1 and i want to draw 1.png which is Bufferedimage b1

so i can say g2d.drawimage(b1, new AffineTransform(), this);

but what if i wanted to say g2d.drawimage(b + x (equals "b1" right cause x = 1 b + x = "b1") but that makes my image argument slot or that doesnt work i mean it doesnt add the two with the + it just says cannon find "b"

im trying to make my integer x (which equals 1) the name of the image i want to draw so if i have 1.png which is a picture of a "1" and integer 1 i can say draw my image 1.png with drawimage(x (which is 1

anyone know what im kinda saying i have ints 1 2 3 4 5 all the way to 9 and a 0 and images if i have int 6 i want to g2d.drawimage(image6

does anyone hav e any ideas?

i could resort to : if (myint = 6){
g2d.drawimage(my6image
}
etc...

[Norm]

Is your problem how to create the name of a file? Use String concatentation:

String fn = "b" + i +".jpg";  //  sets fn to b1.jpg for i = 1

[natdizzle]

ya but drawimage wants a image not a string i think ill just write a class its actually not that much i was trying to save code

[jim829]

Sounds to me like you want to create a dynamic variable of some sort where you have an image type of b1 and you want to access it via a string reference of some type "b" + 1. If that's the case, you can do it with reflection. However, if you know ahead of time the image names you can store them in a map and access them that way.

Regards,
Jim

[Norm]

You need to read the image file (using the name that was built in a String) into a object like BufferedImage so it can be used in the drawImage() method. Then use jim829's idea.

[natdizzle]

it wasnt that bad, heres how i did it:

package drawFramePackage;

import java.awt.image.BufferedImage;
import java.io.File;
import java.io.IOException;

import javax.imageio.ImageIO;

public class Numbers {
	BufferedImage n1, n2, n3, n4, n5, n6, n7, n8, n9, n0, placeholder;
	BufferedImage BiL[] = {n1, n2, n3, n4, n5, n6, n7, n8, n9, n0};
	//, placeholder};
	String names[] = {"1.png", "2.png", "3.png", "4.png", "5.png", "6.png", "7.png", "8.png", "9.png", "0.png"};
	/**
	 * @param args
	 * @throws IOException 
	 */
	/*
	public static void main(String[] args) {
		// TODO Auto-generated method stub

	}
	*/
	public Numbers() throws IOException{
		for (int i = 0; i < 9; i++){
			BiL[i] = ImageIO.read(new File(names[i]));
		}
	}
	public BufferedImage numbers(Integer integer){
		if (integer == 0){
			//return 
					placeholder = BiL[9];
					//n0;
		}
		if (integer == 1){
			placeholder = BiL[0];
					//n1;
		}
		if (integer == 2){
			placeholder = BiL[1];
			//n2;
		}
		if (integer == 3){
			placeholder = BiL[2];
					//n3;
		}
		if (integer == 4){
			placeholder = BiL[3];
			//n4;
		}
		if (integer == 5){
			placeholder = BiL[4];
			//n5;
		}
		if (integer == 6){
			placeholder = BiL[5];
			//n6;
		}
		if (integer == 7){
			placeholder = BiL[6];
			//n7;
		}
		if (integer == 8){
			placeholder = BiL[7];
			//n8;
		}
		if (integer == 9){
			placeholder = BiL[8];
			//n9;
		}
		/*
		if (integer == 0){
			placeholder = n0;
		}
		*/
		return placeholder;
	}
}

now im goint to acess this object from another class and pass int "int 9" and get "9.png"

[Norm]

If the index to the BiL array is always one less than the int arg passed to the method: instead of a group of if statements, just subtract 1 from the int arg, test if it is in bounds and use it as index to the BiL array.

There is no need for the empty placeholder variables. Just define the BiL array the size you want and then fill it in the constructor.

[natdizzle]

ya i want to simplify this but atm this is as simple as it gets with my code base