indexoutofboundsexception

I am creating an android application that consists of a serial communication.I am getting an error called java.lang.ArrayIndexOutOfBoundsException: length=1; index=1 please tell me how to fix it This is my usb driver: public class UsbDriver { private final Context mApplicationContext; private final UsbManager mUsbManager; @SuppressWarnings("unused") private final UsbConnectionHandler mConnectionHandler; private final int VID; private final int PID; protected static final String ACTION_USB_PERMISSION = "ch.serverbox.android.USB"; public static int Device_Exception; public static UsbDevice

Here is my code to get data from a flat file and insert into SQL Server. It is generating an exception ( Index was outside the bounds of the array ). string path = string.Concat(Server.MapPath("~/TempFiles/"), Fileupload1.FileName); string text = System.IO.File.ReadAllText(path); string[] lines = text.Split(' '); con.Open(); SqlCommand cmd = new SqlCommand(); string[] Values = new string[3]; foreach (string line1 in lines) { Values = line1.Split(';'); string query = "INSERT INTO demooo VALUES ('" + Values[0] + "','" + Values[1] + "','" + Values[2] + "')"; cmd = new SqlCommand(query,con); cmd

Inspired by the idea of " C++ HTML template engine that uses compile time HTML parsing ", I am trying to write a sample class to check whether the first char in a string is a . int dummy[0]; class Test { public: constexpr Test(const char *p):p_(p){} constexpr void check()const { if (p_[0]!='a') dummy[1]=0; } const char *p_; }; constexpr Test operator"" _test(const char *pszText, size_t) { Test t(pszText); t.check(); return t; } int main() { //dummy[1] = 0; constexpr Test t = "baa"_test; } It works well(GCC7.1 on Ubuntu). If the first char is not a , it will give a compile error: main.cpp:29:24

Note: I solved the original problem by realizing a completely different one. See the addendum for the new actual problem, but you can read the previous part for context. This is an extension of one of my previous posts . I made a container class based on that answer: template < typename T, unsigned N0, unsigned ...N > struct array_md { // There's a class template specialization with no extents. // Imagine the various N... components are bracket-enclosed instead // of comma-separated. And if "N..." is empty, then we just have "T" // as the "direct_element_type". (I actually use recursive class