Question

I have a Java properties file defined as something like:

Property.1=value1
Property.2=value2
...

There could be any number of properties here.

I am familiar with how to read and use Java Properties, but I am not sure how I would code reading properties when I don’t know the number of them. My idea of pseudo-code would be something like:

// Somehow get the number of properties
for (int i=0; i<properties.size(); i++ {
   prop.getProperty("Property"+i);
...
}

Does anyone know how to read a variable number of properties?

Answer 1

If your properties are numbered sequentially as your example suggests:

int i = 1;
String p;
while ((p = prop.getProperty("Property."+i)) != null) {
  // property #i has value p
  i++;
}