JAVA

     摘要: Read on to see how to add Subversion support to Eclipse and how to perform basic version-control activities from the IDE.  阅读全文

     摘要: 通常許多web資源是面向登錄用戶的，如果我們想利用程序自動獲取，則必須要通過程序登錄之後才能實現。java本身提供的標準庫也可以實現客戶端的登錄，但是卻不能自動管理服務器返回的cookie，必須手動管理。這個是十分麻煩和繁瑣的。幸好有APACHE 的 HTTPCLIENT，我們不必在擔心如何管理cookie。所以用hc登錄，獲取資源都是十分簡單和方便的。在這裡用一段源碼記錄如何使用hc等錄一個website，以及如何通過代理登錄和通過代理訪問頁面。  阅读全文

     摘要: 使用Apache的HTTPCLIENT獲取網頁的內容  阅读全文

     摘要: The PatternLayout is by far the most widely used log4j layout. It formats logging events according to a conversion pattern specified by the user. Conversion patterns are composed of literal text and conversion specifiers. Literal text is output as is. Conversion specifiers consist of the % character followed by an optional format modifier and a mandatory conversion character. For example, %-5p [%t]: %m%n is a conversion pattern composed of a priority (a.k.a. level) conversion specifier followed   阅读全文

     摘要: export _JAVA_OPTIONS='-Dawt.useSystemAAFontSettings=on'  阅读全文

     摘要: ubuntu下的java中文字体文件名为uming.ttc，而不是通用的uming.ttf，解决方法就是为uming.ttc建一个软链接。
$cd /usr/share/fonts/truetype/arphic/
$sudo ln -s uming.ttc uming.ttf  阅读全文

     摘要: the approach of writing clone method is:
1.Implements Cloneable interface
2.Override the clone method
2.1 Make the clone method to public method
2.2 Call super.clone() to produce the new object
2.3 Clone members  阅读全文