Java java.net.URLConnection用法及代碼示例

// Java Program to demonstrate URLConnection class
// Importing input output classes
import java.io.*;
// Importing java.net package
// consisting of all network classes
import java.net.*;
// Main class
// URLConnectionExample
public class GFG {
    // Main driver method
    public static void main(String[] args) throws Exception
    {
        // Try block to check for exceptions
        try {
            // Creating an object of URL class
            // Custom input URL is passed as an argument
            URL u = new URL("www.geeksforgeeks.com");
            // Creating an object of URLConnection class to
            // communicate between application and URL
            URLConnection urlconnect = u.openConnection();
            // Creating an object of InputStream class
            // for our application streams to be read
            InputStream stream
                = urlconnect.getInputStream();
            // Declaring an integer variable
            int i;
            // Till the time URL is being read
            while ((i = stream.read()) != -1) {
                // Continue printing the stream
                System.out.print((char)i);
            }
        }
        // Catch block to handle the exception
        catch (Exception e) {
            // Print the exception on the console
            System.out.println(e);
        }
    }
}