Sep 30, 2009 · Are you reading the input from the keyboard, a file, or what? If you just want to check if a String is a valid double, try parsing it. If it parses, yeah! If not, an exception is thrown, catch it, and …

Feb 21, 2011 · i have an input file consisting of a street (string), city (string), state (string), and zip (int). we have a constructed Address.java file with default and explicit value constructor, a toString, …