outputstream

I am writing a program in Java which displays a range of afterschool clubs (E.G. Football, Hockey - entered by user). The clubs are added into the following ArrayList : private ArrayList<Club> clubs = new ArrayList<Club>(); By the followng Method: public void addClub(String clubName) { Club club = findClub(clubName); if (club == null) clubs.add(new Club(clubName)); } 'Club' is a class with a constructor - name: public class Club { private String name; public Club(String name) { this.name = name; } //There are more methods in my program but don't affect my query.. } My program is working - it

I am using HTTPURLConnection to connect to a web service. I know how to use HTTPURLConnection but I want to understand how it works. Basically, I want to know the following: On which point does HTTPURLConnection try to establish a connection to the given URL? On which point can I know that I was able to successfully establish a connection? Are establishing a connection and sending the actual request done in one step/method call? What method is it? Can you explain the function of getOutputStream and getInputStream in layman's term? I notice that when the server I'm trying to connect to is down,

#include <iostream> using namespace std; int main() { char c1 = 0xab; signed char c2 = 0xcd; unsigned char c3 = 0xef; cout << hex; cout << c1 << endl; cout << c2 << endl; cout << c3 << endl; } I expected the output are as follows: ab cd ef Yet, I got nothing. I guess this is because cout always treats 'char', 'signed char', and 'unsigned char' as characters rather than 8-bit integers. However, 'char', 'signed char', and 'unsigned char' are all integral types. So my question is: How to output a character as an integer through cout? PS: static_cast(...) is ugly and needs more work to trim extra

update in java9: https://docs.oracle.com/javase/9/docs/api/java/io/InputStream.html#transferTo-java.io.OutputStream- I saw some similar, but not-quite-what-i-need threads. I have a server, which will basically take input from a client, client A, and forward it, byte for byte, to another client, client B. I'd like to connect my inputstream of client A with my output stream of client B. Is that possible? What are ways to do that? Also, these clients are sending each other messages, which are somewhat time sensitive, so buffering won't do. I do not want a buffer of say 500 and a client sends 499

What is the most reliable pattern to follow when closing an OutputStream , ServerSocket , or other object that implements the AutoCloseable interface? Should I use try - catch - finally ? Or a shutdown hook. The correct way to use an AutoCloseable instance is with a try -with-resources block, so the resource is reliably closed even if an exception is thrown. Like this: try (OutputStream stream = new ...) { ... // use the resource } catch (IOException e) { ... // exception handling code } You can also control multiple resources using one block (rather than nested blocks): try ( OutputStream