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  1. /* package whatever; // don't place package name! */
  2.  
  3. import java.util.*;
  4. import java.lang.*;
  5. import java.io.*;
  6. import java.net.HttpURLConnection;
  7. import java.net.URL;
  8.  
  9. import javax.net.ssl.HttpsURLConnection;
  10.  
  11. /* Name of the class has to be "Main" only if the class is public. */
  12. class Ideone
  13. {
  14. 	public static void main (String[] args) throws java.lang.Exception
  15. 	{
  16. 		String url = "http://www.google.com/search?q=mkyong";
  17.  
  18. 		URL obj = new URL(url);
  19. 		HttpURLConnection con = (HttpURLConnection) obj.openConnection();
  20.  
  21. 		// optional default is GET
  22. 		con.setRequestMethod("GET");
  23.  
  24. 		//add request header
  25. 		con.setRequestProperty("User-Agent", USER_AGENT);
  26.  
  27. 		int responseCode = con.getResponseCode();
  28. 		System.out.println("\nSending 'GET' request to URL : " + url);
  29. 		System.out.println("Response Code : " + responseCode);
  30.  
  31. 		BufferedReader in = new BufferedReader(
  32. 		        new InputStreamReader(con.getInputStream()));
  33. 		String inputLine;
  34. 		StringBuffer response = new StringBuffer();
  35.  
  36. 		while ((inputLine = in.readLine()) != null) {
  37. 			response.append(inputLine);
  38. 		}
  39. 		in.close();
  40.  
  41. 		//print result
  42. 		System.out.println(response.toString());
  43. 	}
  44. }
Compilation error #stdin compilation error #stdout 0s 0KB
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stdin
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Standard input is empty
compilation info 
Main.java:25: error: cannot find symbol
		con.setRequestProperty("User-Agent", USER_AGENT);
		                                     ^
  symbol:   variable USER_AGENT
  location: class Ideone
1 error
stdout
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Standard output is empty
https://ideone.com/vitFuL
language:
Java (12.0.1)
created:
8 years ago
visibility:
public

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