2.2. 抬升式引用约定

终端输出和源代码列表要与周围文本明显分开。

将发送到终端的输出设定为 Mono-spaced Roman 并显示为：

books        Desktop   documentation  drafts  mss    photos   stuff  svn
books_tests  Desktop1  downloads      images  notes  scripts  svgs

源码列表也设为 Mono-spaced Roman，但添加下面突出的语法：

package org.jboss.book.jca.ex1;
import javax.naming.InitialContext;
public class ExClient
{
   public static void main(String args[]) 
       throws Exception
   {
      InitialContext iniCtx = new InitialContext();
      Object         ref    = iniCtx.lookup("EchoBean");
      EchoHome       home   = (EchoHome) ref;
      Echo           echo   = home.create();
      System.out.println("Created Echo");
      System.out.println("Echo.echo('Hello') = " + echo.echo("Hello"));
   }
}