how to implement HTTP Get method in java

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Java

HTTP

sockets

I have write the code below for sending GET request to server, but server response is "Bad Request", what should I do?

String request = "GET "+ url.getFile() +" HTTP/1.1\r\n"+
                         "Host: "+url.getHost()+"\r\n"+
                         "Connection: Keep Alive\r\n"+
                         "\r\n";
        OutStream.write(request.getBytes());
        OutStream.flush();