import java.io.IOException; public class Main { public static void main(String[] args) throws IOException { String cmd = "cmd.exe /c start "; // String file = "c:\\version.txt"; // String file = "http://www.google.com"; // String file = "c:\\"; // String file = "mailto:author@my.com"; String file = "mailto:"; Runtime.getRuntime().exec(cmd + file); } }