使用sudo apt-get install sun-java6-jdk安装JDK

在软件包设置画面（字符界面，蓝色背景的），不知道如何进入下一步。

点回车什么的都没有反应。

本人初次使用Linux

软件包设置

┌────────────────────────┤ 正在设定 sun-java6-bin ├─────────────────────────┐
│                                                                           │
│     Agreement is the entire agreement between you and Sun relating to     ↑
│     its subject matter.  It supersedes all prior or contemporaneous       ▒
│     oral or written communications, proposals, representations and        ▒
│     warranties and prevails over any conflicting or additional terms      ▒
│     of any quote, order, acknowledgment, or other communication           ▒
│     between the parties relating to its subject matter during the term    ▒
│     of this Agreement.  No modification of this Agreement will be         ▒
│     binding, unless in writing and signed by an authorized                ▒
│     representative of each party.                                         ▒
│                                                                           ▒
│                                                                           ▒
│ For inquiries please contact: Sun Microsystems, Inc., 4150 Network        ▮
│ Circle, Santa Clara, California 95054, U.S.A.                             ▒
│                                                                           ↓
│                                                                            
│                                  <Ok>                                      
│                                                                           │
└───────────────────────────────────────────────────────────────────────────┘

按Tab移动光标

按tab移动到ok，回车确定。
然后继续安装sun-java6-jre,sun-java6-bin,sun-java6-source,sun-java6-doc,sun-java6-fonts,sun-java6-demo