java 去除文本中不需要的内容

1、24:a2:e1:29:60:48 Tue Jun 17 23:47:02 2014    video XNTcwMzE5MjQ4 clicked    24:a2:e1:29:60:48 Tue Jun 17 23:48:23 2014    video XNzE3NTk1NDI0 clicked    24:a2:e1:29:60:48 Tue Jun 17 23:50:02 2014    video end    Video details:    Total duration: 15.970000 mins    Viewing time: 93.890000 secs    Device operation: ios
2、24:a2:e1:29:60:48 Tue Jun 24 08:35:34 2014    video XNTE1MDg0MTY4 clicked    24:a2:e1:29:60:48 Tue Jun 24 08:38:41 2014    video XNzI3NjUwODA4 clicked    24:a2:e1:29:60:48 Tue Jun 24 08:38:44 2014    video end    Video details:    Total duration: 4.710000 mins    Viewing time: 2.260000 secs    Device operation: ios
3、24:a2:e1:29:60:48 Tue Jun 17 23:13:59 2014    video XNzIyNDcxMjU2 clicked    24:a2:e1:29:60:48 Tue Jun 17 23:14:04 2014    video XNzIyNDcxMjU2 clicked    24:a2:e1:29:60:48 Tue Jun 17 23:14:08 2014    video XNjg5MDkwMjA0 clicked    24:a2:e1:29:60:48 Tue Jun 17 23:14:14 2014    video end    Video details:    Total duration: 4.590000 mins    Viewing time: 5.020000 secs    Device operation: ios

1和2中都有重复的clicked，现在需要保留每一行clicked之后的内容，而之前的内容不需要，使用java来实现，求各位大神指点下
应该不是去重吧。
谢谢。。。

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通过字符串截取可以很好地解决问题,添加如下的代码就可以了

if(str.length()>230){
    str = str.substring(str.indexOf("clicked") + 8);
}

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表述的的没看明白要保留那些，最好举个例子
你可以用正则表达式试一下

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你可以用StringBuilder，读一条构建一个，然后remove哪些lastIndexof(clicked)之前的字符。