diff --git a/src/j2/ThreadEchoClient.java b/src/j2/ThreadEchoClient.java
index 0cc1b47..ccf9e2a 100644
--- a/src/j2/ThreadEchoClient.java
+++ b/src/j2/ThreadEchoClient.java
@@ -7,53 +7,51 @@
 import java.net.Socket;
 import java.net.UnknownHostException;
 public class ThreadEchoClient {
-    public static void main(String[] args) {
-        // ソケットや入出力用のストリームの宣言
-        Socket echoSocket = null;
-        DataOutputStream os = null;
-        BufferedReader is = null;
-        BufferedReader inputbr = null;
-        
-        // ポート9999番を開く
-    	String host = "localhost";
-        try {
-            echoSocket = new Socket(host, 9999);
-            os = new DataOutputStream(echoSocket.getOutputStream());
-            is = new BufferedReader(new InputStreamReader(echoSocket.getInputStream()));
-            inputbr = new BufferedReader(new InputStreamReader(System.in));
-        } catch (UnknownHostException e) {
-            System.err.println("Don't know about host: "+host);
-        } catch (IOException e) {
-            System.err.println("Couldn't get I/O for the connection to: "+host);
-        }
+	public static void main(String[] args) {
+		// ソケットや入出力用のストリームの宣言
+		Socket echoSocket = null;
+		DataOutputStream os = null;
+		BufferedReader is = null;
+		BufferedReader inputbr = null;
 
-        // サーバーにメッセージを送る
-        if (echoSocket != null && os != null && is != null) {
-            try {
-                // メッセージを送ります
-                os.writeBytes("HELLO\n");
+		// ポート9999番を開く
+		String host = "localhost";
+		try {
+			echoSocket = new Socket(host, 9999);
+			os = new DataOutputStream(echoSocket.getOutputStream());
+			is = new BufferedReader(new InputStreamReader(echoSocket.getInputStream()));
+			inputbr = new BufferedReader(new InputStreamReader(System.in));
+		} catch (UnknownHostException e) {
+			System.err.println("Don't know about host: "+host);
+		} catch (IOException e) {
+			System.err.println("Couldn't get I/O for the connection to: "+host);
+		}
 
-                // サーバーからのメッセージを受け取り画面に表示します
-                String line;
-                while ((line = is.readLine()) != null) {
-                    System.out.println("Server: " + line);
-                    if (line.equals("quit")) break;
-                    if (inputbr.ready()) {
-                    	String s = inputbr.readLine();
-                    	System.out.println(s);
-                        os.writeBytes(s+"\n");
-                    }
-                }
+		// サーバーにメッセージを送る
+		if (echoSocket != null && os != null && is != null) {
+			try {
+				// メッセージを送ります
+				os.writeBytes("HELLO\n");
 
-                // 開いたソケットなどをクローズ
-                os.close();
-                is.close();
-                echoSocket.close();
-            } catch (UnknownHostException e) {
-                System.err.println("Trying to connect to unknown host: " + e);
-            } catch (IOException e) {
-                System.err.println("IOException: " + e);
-            }
-        }
-    }
+				// サーバーからのメッセージを受け取り画面に表示します
+				String line;
+				while ((line = is.readLine()) != null) {
+					System.out.println("Server: " + line);
+					if (line.equals("quit")) break;
+					String s = inputbr.readLine();
+					System.out.println(s);
+					os.writeBytes(s+"\n");
+				}
+
+				// 開いたソケットなどをクローズ
+				os.close();
+				is.close();
+				echoSocket.close();
+			} catch (UnknownHostException e) {
+				System.err.println("Trying to connect to unknown host: " + e);
+			} catch (IOException e) {
+				System.err.println("IOException: " + e);
+			}
+		}
+	}
 }
\ No newline at end of file