Add very basic Java MC server impl

src/main/java/cc/fascinated/service/pinger/MinecraftServerPinger.java

@@ -0,0 +1,9 @@
+package cc.fascinated.service.pinger;
+
+/**
+ * @author Braydon
+ * @param <T> the type of server to ping
+ */
+public interface MinecraftServerPinger<T> {
+    T ping(String hostname, int port);
+}

src/main/java/cc/fascinated/service/pinger/impl/JavaMinecraftServerPinger.java

@@ -0,0 +1,53 @@
+package cc.fascinated.service.pinger.impl;
+
+import cc.fascinated.Main;
+import cc.fascinated.common.packet.impl.java.JavaPacketHandshakingInSetProtocol;
+import cc.fascinated.common.packet.impl.java.JavaPacketStatusInStart;
+import cc.fascinated.model.mojang.JavaServerStatusToken;
+import cc.fascinated.model.server.JavaMinecraftServer;
+import cc.fascinated.service.pinger.MinecraftServerPinger;
+import lombok.extern.log4j.Log4j2;
+
+import java.io.DataInputStream;
+import java.io.DataOutputStream;
+import java.io.IOException;
+import java.net.InetSocketAddress;
+import java.net.Socket;
+
+/**
+ * @author Braydon
+ */
+@Log4j2(topic = "Java Pinger")
+public final class JavaMinecraftServerPinger implements MinecraftServerPinger<JavaMinecraftServer> {
+    public static final JavaMinecraftServerPinger INSTANCE = new JavaMinecraftServerPinger();
+
+    private static final int TIMEOUT = 3000; // The timeout for the socket
+
+    @Override
+    public JavaMinecraftServer ping(String hostname, int port) {
+        log.info("Pinging {}:{}...", hostname, port);
+
+        // Open a socket connection to the server
+        try (Socket socket = new Socket()) {
+            socket.setTcpNoDelay(true);
+            socket.connect(new InetSocketAddress(hostname, port), TIMEOUT);
+
+            // Open data streams to begin packet transaction
+            try (DataInputStream inputStream = new DataInputStream(socket.getInputStream());
+                 DataOutputStream outputStream = new DataOutputStream(socket.getOutputStream())) {
+                // Begin handshaking with the server
+                new JavaPacketHandshakingInSetProtocol(hostname, port, 47).process(inputStream, outputStream);
+
+                // Send the status request to the server, and await back the response
+                JavaPacketStatusInStart packetStatusInStart = new JavaPacketStatusInStart();
+                packetStatusInStart.process(inputStream, outputStream);
+                System.out.println("packetStatusInStart.getResponse() = " + packetStatusInStart.getResponse());
+                JavaServerStatusToken token = Main.GSON.fromJson(packetStatusInStart.getResponse(), JavaServerStatusToken.class);
+                return new JavaMinecraftServer(hostname, port, token.getDescription());
+            }
+        } catch (IOException ex) {
+            ex.printStackTrace();
+        }
+        return null;
+    }
+}