diff --git a/bin/j6/Chat.class b/bin/j6/Chat.class
index 393a2d6..0b68351 100644
--- a/bin/j6/Chat.class
+++ b/bin/j6/Chat.class
Binary files differ
diff --git a/bin/j6/StreamConnector.class b/bin/j6/StreamConnector.class
index 02333e1..7eac924 100644
--- a/bin/j6/StreamConnector.class
+++ b/bin/j6/StreamConnector.class
Binary files differ
diff --git a/bin/j6/T1.class b/bin/j6/T1.class
index 954f1a0..1a63ab8 100644
--- a/bin/j6/T1.class
+++ b/bin/j6/T1.class
Binary files differ
diff --git a/bin/j6/clientProc.class b/bin/j6/clientProc.class
index 0d1f6fd..97a35b0 100644
--- a/bin/j6/clientProc.class
+++ b/bin/j6/clientProc.class
Binary files differ
diff --git a/src/j6/Chat.java b/src/j6/Chat.java
index 354f2d1..f8c917a 100644
--- a/src/j6/Chat.java
+++ b/src/j6/Chat.java
@@ -26,14 +26,14 @@
 	port = portno ; //ポート番号の設定
 	BufferedReader lineread
 	  = new BufferedReader(new InputStreamReader(System.in)) ;
-	System.out.println("Input your name: ") ;
+	System.out.print("Input your name: ") ;
 	try{
 		myname = lineread.readLine() ;
 	}catch(Exception e){
 		e.printStackTrace() ;
 		System.exit(1) ;
 	}
-	System.out.println("Welcome" + myname + "!") ;
+	System.out.println("Welcome " + myname + "!") ;
 	myname = myname + ">" ;
 	nameLength = (myname.getBytes()).length ;
 	for(int i = 0;i < nameLength;++i)
diff --git a/src/j6/ChatServer.java b/src/j6/ChatServer.java
index aa5cd6d..ecb8197 100644
--- a/src/j6/ChatServer.java
+++ b/src/j6/ChatServer.java
@@ -103,7 +103,6 @@
 				out.flush();
 				name = in.readLine();
 			}
-			System.out.println("Now, send your message");
 			String line = in.readLine();
 			while (!"quit".equals(line)){
 				ChatServer.sendAll(name + "> " +line);
diff --git a/src/j6/T1.java b/src/j6/T1.java
index 1b86a39..448cf69 100644
--- a/src/j6/T1.java
+++ b/src/j6/T1.java
@@ -1,5 +1,10 @@
 package j6;
 
+import java.io.BufferedInputStream;
+import java.io.IOException;
+import java.io.InputStream;
+import java.io.OutputStream;
+
 // telnetの原形となるプログラムT1.java
 // このプログラムは,指定されたアドレスのポートに標準入出力を接続します
 // 使い方java T1 サーバアドレスポート番号
@@ -7,8 +12,8 @@
 // 終了にはコントロールC を入力してください
 
 // ライブラリの利用
-import java.net.*;
-import java.io.*;
+import java.net.Socket;
+import java.net.UnknownHostException;
 
 // T1クラス
 // T1クラスは,ネットワーク接続の管理を行います