Question

Let’s say I have a file called test.txt within the package ‘com.test.io’ within my jar.

How would I go about writing a class which retrieves this text file and then copies the contents to a new file on the file system?

Answer 1

Assuming said jar is on your classpath:

URL url = getClassLoader().getResource('com/test/io/test.txt'); FileOutputStream output = new FileOutputStream('test.txt'); InputStream input = url.openStream(); byte [] buffer = new byte[4096]; int bytesRead = input.read(buffer); while (bytesRead != -1) {     output.write(buffer, 0, bytesRead);     bytesRead = input.read(buffer); } output.close(); input.close();