Help needed setting ImageIcon image

[ben1989]

I get this error when trying to set the image on the imageIcon.

setImage(java.awt.Image) in java.swing.ImageIcon cannot be applied to (java.lang.string)

This is my code.

import javax.swing.*;
import java.awt.*;


class Vehicle
{
protected double charge;
protected String regNumber;
protected ImageIcon vehicleImage;

Vehicle()
{
charge = 0;
regNumber = null;
vehicleImage.setImage("car.png");
}

..

I can get it set by using the constructor but i want to be able to change it. Please help!
Also the directory for the picture is correct

[camickr]

Read the ImageIcon API. The setImage(...) method needs an Image, not a String. You can use ImageIO to read images.

[ben1989]

Ah right ill give it a try

[ben1989]

Reading the api for that ImageIO i dont understand how it works could you give me an example?

[camickr]

You gave up after spending 2 minutes to read the API? Its one line of code.

If you need more help post your SSCCE that shows what you have tried.

[ben1989]

Do you have to do something like this

new ImageReader iR = ImageReader (car.png);
vehicleImage.setImage(iR);

[camickr]

Does the code compile?

I thought the setImage(...) method needs an Image. Is an ImageReader an Image?

[ben1989]

this is what I'v tried and it wont compile :S

import javax.swing.*;
import java.awt.*;
import java.awt.image.*;
import javax.imageio.ImageReader.*;

public class Car extends Vehicle
{
private double length;

Car()
{
super();
length = 0;
}

Car (String nr,double l)
{
regNumber = nr;

if(l <= 6)
{
charge = 1.00;
ImageReader iR = new ImageReader(car.png);
vehicleImage.Image=(iR);

} else if(l > 6)
{
charge = 1.80;
}

}
}

[camickr]

The setImage() method needs an Image, NOT an ImageReader.

What methods in the API return an Image?

[ben1989]

thats what iv been trying to find i dont think i know how to use the api properly how do u search for what returns an image quickly?

[ben1989]

Toolkit.getImage(String filename) is this what im looking for?

[camickr]

Why are you looking at the Toolkit class. I said:

You can use ImageIO to read images.

You do know that you can use classes that extend Image? If you look at the Image class you will find sub classes of Image. So do any methods of ImageIO return an Image or one of its sub classes?

[ben1989]

read(File input)
Returns a BufferedImage as the result of decoding a supplied File with an ImageReader chosen automatically from among those currently registered.

Is this what i should be using? and if it is how do i implement it do i need to use a imagereader

[curmudgeon]

Yes, a BufferedImage will work as this implements the Image interface (again, you need to use something that implements Image). No you do not need an image reader. Again, as said several times above, you should use ImageIO to read in the file and create the BufferedImage. Buena suerte.

[ben1989]

Ok but i don't understand how to implement it.. i can't read the API properly yet

[Fubarable]

Ok but i don't understand how to implement it.. i can't read the API properly yet

Try. Anything. Then if it still doesn't work, show your attempt, but whatever you do, don't give up before putting in the effort lest you cheat yourself of the opportunity to learn.

[ben1989]

ok iv tried this its not recognizing the File object

import javax.swing.*;
import java.awt.*;
import javax.imageio.*;

public class Car extends Vehicle
{
private double length;
File file = new File("Assessment3Images/car.png");


Car()
{
super();
length = 0;
}

Car (String nr,double l)
{
regNumber = nr;

if(l <= 6)
{
charge = 1.00;

vehicleImage = ImageIO.read(file);

} else if(l > 6)
{
charge = 1.80;
}

}
}

[Fubarable]

Do you have all the needed imports (i.e., where do you import File?)?
Have you declared all variables (i.e., where is vehicleImage declared?)?

Also, please read the link in my signature regarding use of code tags when posting code in this forum.

[ben1989]

Ok I have the all the correct imports and vehicleImage is declared in the super class
It is now giving me an IO exception this is what i'v got

import javax.swing.*;
import java.awt.*;
import javax.imageio.*;
import java.io.*;

public class Car extends Vehicle
{
private double length;
File file = new File("Assessment3Images/car.png");


Car()
{
super();
length = 0;
}

Car (String nr,double l)
{
regNumber = nr;

if(l <= 6)
{
charge = 1.00;

vehicleImage.setImage(ImageIO.read(file));

} else if(l > 6)
{
charge = 1.80;
}

}
}

[ben1989]

import javax.swing.*;
import java.awt.*;
import javax.imageio.*;
import java.io.*;
import java.awt.image.BufferedImage;


public class Car extends Vehicle
{
private double length;
//File file = new File("Assessment3Images/car.png");




Car()
{
super();
length = 0;
}

Car (String nr,double l)
{
regNumber = nr;

if(l <= 6)
{
charge = 1.00;

try
{
BufferedImage image = ImageIO.read(new File("Assessment3Images/car.png"));
vehicleImage.setImage(image);
}
catch (IOException e)
{
}


} else if(l > 6)
{
charge = 1.80;
}

}
}

This compiles but does this mean it has done what i want it to or just not crashed because of the exception? I won't be able to check for a while