Antwort: Java Exception question...

[ralf.petter@xxxxxxxxxxx]

Hm!

catching an exception is pretty easy. Give the code line which throws the 
exception into a try catch block. for example

try {
String targetFilename = imageDir + 
filename.substring(0, filename.lastIndexOf(".")) + i + ".jpg";
                                JAI.create("filestore", image, 
targetFilename, "JPEG");
}
catch(java.lang.reflect.InvocationTargetException e){
}

I think this will work, but is not best practice.

Greetings from Austria

Ralf M Petter




Shane_Cessna@xxxxxxx 
Gesendet von: java400-l-bounces@xxxxxxxxxxxx
26.09.2005 15:13
Bitte antworten an
Java Programming on and around the iSeries / AS400 
<java400-l@xxxxxxxxxxxx>


An
java400-l@xxxxxxxxxxxx
Kopie

Thema
Java Exception question...






I'm not sure if this is possible or not, but here goes.  I have a loop 
that converts multi-page TIF files to single page JPEG files...my problem 
comes when the program converts the first page of the TIF successfully 
then throws an exception 
(java.lang.reflect.InvocationTargetException)...is there any possible way 
to completely ignore this exception within my code?  I realize this might 
be taboo, but my method does what i want it to do before it hits this 
exception...here's my code:

import java.io.*;
import java.awt.*;
import java.awt.image.*;
import java.awt.image.renderable.*;
import com.sun.media.jai.codec.*;
import javax.media.jai.*;

public class Tiff2JPEG {
        public static boolean doTiff2JPEG(String filename, String 
imageDir) {
                String sourceFilename = imageDir + filename;
                try {
                        FileSeekableStream stream = new 
FileSeekableStream(sourceFilename);
                        imageDecoder dec = 
ImageCodec.createImageDecoder("tiff", stream, null);
                        int numofpages = dec.getNumPages();
                        for (i = 0; i <= numofpages; i++) {
                                RenderedImage image = 
dec.decodeAsRenderedImage(i);
                                String targetFilename = imageDir + 
filename.substring(0, filename.lastIndexOf(".")) + i + ".jpg";
                                JAI.create("filestore", image, 
targetFilename, "JPEG");        // this creates the JPG successfully, then 

throws the exception...
                        }
                return true;
                } catch (IOException e) {
                        e.printStackTrace();
                        return false;
                }
        }
 
        public static void main(String args[]) {
                if (doTiff2JPEG("multicolor14pages.tif", "C:\test 
tiffs\")) {
                        System.out.println("JPG Creation Successful!");
                } else {
                        System.out.println("JPG Creation Unsuccessful!");
                }
        }
}

Shane