客户端给服务端发送文本。服务端将文本转成大写在返回给客户端

/*
 * 建立一个文本转换服务器
 * 客户端给服务端发送文本。服务端将文本转成大写在返回给客户端
 * 而且客户端可以不断的进行文本转换，当客户输入over时
 * 转换结束
 */
public class C {
public static void main(String[] args) throws UnknownHostException, IOException {
Socket s=new Socket("10.218.24.253",10008);
BufferedReader bufr=new BufferedReader(new InputStreamReader(System.in));

BufferedWriter bufwOut=new BufferedWriter(new OutputStreamWriter(s.getOutputStream()));

BufferedReader bufrIn=new BufferedReader(new InputStreamReader(s.getInputStream()));

String line=null;
while((line=bufr.readLine())!=null){

if("over".equals(line)){
break;
}
bufwOut.write(line);
bufwOut.newLine();
bufwOut.flush();
String str=bufrIn.readLine();
}
bufr.close();
s.close();
}

}

//****************************************

public class S {
public static void main(String[] args) throws IOException {
ServerSocket ss=new ServerSocket(10008);
Socket s=ss.accept();
BufferedReader bufIn=new BufferedReader(new InputStreamReader(s.getInputStream()));
BufferedWriter bufout=new BufferedWriter(new OutputStreamWriter(s.getOutputStream()));
String line=null;
while((line=bufIn.readLine())!=null){
bufout.write(line.toUpperCase());
bufout.newLine();
bufout.flush();
}
s.close();
ss.close();

}
}