How to read a file from a jar file?

Question

I have a file in a JAR file. It's 1.txt, for example.

How can I access it? My source code is:

Double result=0.0; File file = new File("1.txt")); //how get this file from a jar file BufferedReader input = new BufferedReader(new FileReader(file)); String line; while ((line = input.readLine()) != null) {   if(me==Integer.parseInt(line.split(":")[0])){     result= parseDouble(line.split(":")[1]);   } } input.close(); return result; 

Answer 1

If your jar is on the classpath:

InputStream is = YourClass.class.getResourceAsStream("1.txt"); 

If it is not on the classpath, then you can access it via:

URL url = new URL("jar:file:/absolute/location/of/yourJar.jar!/1.txt"); InputStream is = url.openStream();