1.add NetParse package
	add SearchCrawler.java
	add CenteredFrame.java
	add FontSetting.java
	add GraphicsDraw.java
	add ImageTest.java
	add PlafTest.java
2.add SwingDemo package
	add ButtonEventTest.java 
3.change functionDemo package
	add ProxyTest.java 
	add	EnumTest.java 
	add InnerClassTest.java 
	add StaticInnerClassTest.java
	change GetFileSize.java
	change DataLengthFormatChange.java