Re: is that possible to include a small PNG file as part of Java class?
On Mon, 23 Jun 2014 09:02:20 -0700 (PDT), www wrote:
I have a simple Java class: Abc.java. The method within it needs to access a small PNG file(it's an icon picture). Right now, this picture file("abc.png") is located at nonsrc/icons/abc.png
So this class is a bit pain. Abc.class won't work in the absence of abc.png. When I create an executable JAR, this is pain: always need to remember to include abc.png file inside it.
I am wondering if there is a way that I can "convert" abc.png into some sort of Java code and I can put it in Abc.java. So Abc.class alone can perform the job, without the need of presence of abc.png. Is that possible?
Hope I have explained my intention well.
This is obviously a horrible idea. As others have said, you should learn
how to use a build tool. That being said, who doesn't like a challenge ?
The posted solutions here are pretty horrible too, so I made this
(apologies for line length):
public class EmbedFile {
public static void main(String[] args) throws IOException {
byte[] bytes = IOUtils.toByteArray(new FileInputStream(args[0]));
String data[] = (" String data = \"" +
DatatypeConverter.printBase64Binary(bytes) + "\";")
.split("(?<=\\G.{83})");
StringBuilder output = new StringBuilder();
output.append(data[0] + "\n");
for (int i = 1; i < data.length; i++) {
output.append(" + \"" + data[i] + "\"\n");
}
System.out.println(output.toString());
}
}
Feeding it with a binary file as parameter 1 produces an output such as:
String data =
"iVBORw0KGgoAAAANSUhEUgAAAMgAAACWCAMAAACsAjcrAAAAAXNSR0IArs4c6QAA
+"AARnQU1BAACxjwv8YQUAAAMAUExURRcaGRoaFhkZGRkaHBkcGhodHRwZGhwbHB4cGR0dHR0fIBwgHh4hICI"
+"eHSIjIyYpKS4nJCssLCwuMC4xMTQvLjIxLzIyMjU3ODU4NzY4ODc8Ojc9PTk2NTk6Ojo6PDk8Ozo9PTw+Pj"
....
which increases the effective size of the class file by 1.6x the size of
the binary file you want to include - a far cry from
Liebe Gruesse,
Joerg
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