how to write into a text file in Java

Question

I am doing a project in java and in that i need to add and modify my text file at runtime,which is grouped in the jar.

I am using class.getResourceAsStream(filename) thi

Answer 1

A good solution that avoids the need to put your items into a Jar file is to read (if present) a properties file out of a hidden subdirectory in the user's home directory. The logic looks a bit like this:

if (the hidden directory named after my application doesn't exist) {
  makeTheHiddenDirectory();
  writeTheDefaultPropertiesFile();
}
Properties appProps = new Properties();
appProps.load(new FileInputStream(fileInHiddenDir));
...
... After the appProps have changed ...
...
appProps.store(new FileOutputStream(fileInHiddenDir), "Do not modify this file");

Look to java.util.Properties, and keep in mind that they have two different load and store formats (key = value based and XML based). Pick the one that suits you best.