Question

I have a properties file that says

window.1.height=100
window.1.width=80

window.2.height=50
window.2.width=30

window.3.height=150
window.3.width=100

I am using the PropertiesConfiguration class and reading the properties.
How can I know the count of windows in the properties. Is therea pattern search

Answer 1

I usually use something like

int i = 0;
String val;
for(;;) {
  val = props.get("foo" + i);
  if (null == val) {
     break;
  }
  //process val
}

This places the constraint that the counter values must be contiguous.