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Integer var = new Integer();//ÓÐÓï·¨´íÎó
Integer var = new Integer(2);//悦﵀
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Vector v = new Vector();
v.add("aaaaaaaa");
v.add("bbbbbbbbbbbb");
for (Enumeration e = v.elements(); e.hasMoreElements();)
{
System.out.println(e.nextElement());
}
//Êä³ö
//aaaaaaaa
//bbbbbbbbbbbb
½Ó¿ÚµÄʵÏÖ£ºFilenameFilterÊǽӿÚ
String[] names=f.list(new FilenameFilter()//µÃµ½ÒÔÉÏÎļþ¼ÐÏÂËùÓеÄÎļþÃûºÍĿ¼Ãû,´æ´¢ÔÚnamesÊý×éÖÐ
{
public boolean accept(File dir,String name)
{
return name.indexOf(".java")!=-1;
}
});
getClass().getName();
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InputStream ÖÐµÄ FileInputStream ÀàËÆÒ»¸öÎļþ¾ä±ú£¬Í¨¹ýËüÀ´¶ÔÎļþ½øÐвÙ×÷£¬ÀàËÆ ......
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2.¿Í»§¶Ë·¢ËÍhttpÇëÇó;
3.·þÎñÆ÷¶Ë½ÓÊÕ¿Í»§¶ËµÄhttpÇëÇó,Éú³ÉhttpÏìÓ¦»Ø·¢;
4.·þÎñÆ÷¹Ø±ÕÁ¬½Ó.
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Servlet:
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3.¼Ì³ÐÓÚHttpS ......
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import java.io.*;
class FileTest
{
public static void main(String[] args) throws Exception
{
//File f=new File("1.txt");
//f.createNewFile();
//f.mkdir();
//File f=new File("E:\\JavaLesson\\Lesson7\\1.txt");//ÔÚWindowsϵͳÏÂ,Óþø¶Ô ......