Shortest way to reverse Properties

Question

In Java I have a java.util.Properties object and I want to obtain another one with the same pairs but keys converted to values and viceversa.

If there are c

Answer 1

Something like:

Properties fowards = new Properties();
fowards.load(new FileInputStream("local.properties"));

Properties backwards = new Properties();

for (String propertyName : fowards.stringPropertyNames())
{
  backwards.setProperty(forwards.get(propertyName), propertyName);
}