java IO²Ù×÷ (¶Áд¡¢×·¼Ó¡¢É¾³ý¡¢Òƶ¯¡¢¸´ÖƵÈ)
Ò»¡¢¶àÖÖ·½Ê½¶ÁÎļþÄÚÈÝ¡£
1¡¢°´×Ö½Ú¶ÁÈ¡ÎļþÄÚÈÝ
2¡¢°´×Ö·û¶ÁÈ¡ÎļþÄÚÈÝ
3¡¢°´ÐжÁÈ¡ÎļþÄÚÈÝ
4¡¢Ëæ»ú¶ÁÈ¡ÎļþÄÚÈÝ
import java.io.BufferedReader;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileReader;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.io.RandomAccessFile;
import java.io.Reader;
public class ReadfromFile {
/**
* ÒÔ×Ö½ÚΪµ¥Î»¶ÁÈ¡Îļþ£¬³£ÓÃÓÚ¶Á¶þ½øÖÆÎļþ£¬ÈçͼƬ¡¢ÉùÒô¡¢Ó°ÏñµÈÎļþ¡£
* @param fileName ÎļþµÄÃû
*/
public static void readFileByBytes(String fileName){
File file = new File(fileName);
InputStream in = null;
try {
System.out.println("ÒÔ×Ö½ÚΪµ¥Î»¶ÁÈ¡ÎļþÄÚÈÝ£¬Ò»´Î¶ÁÒ»¸ö×Ö½Ú£º");
// Ò»´Î¶ÁÒ»¸ö×Ö½Ú
in = new FileInputStream(file);
int tempbyte;
while((tempbyte=in.read()) != -1){
System.out.write(tempbyte);
}
in.close();
} catch (IOException e) {
e.printStackTrace();
return;
}
try {
System.out.println("ÒÔ×Ö½ÚΪµ¥Î»¶ÁÈ¡ÎļþÄÚÈÝ£¬Ò»´Î¶Á¶à¸ö×Ö½Ú£º");
//Ò»´Î¶Á¶à¸ö×Ö½Ú
byte[] tempbytes = new byte[100];
int byteread = 0;
in = new FileInputStream(fileName);
ReadfromFile.showAvailableBytes(in);
//¶ÁÈë¶à¸ö×Ö½Úµ½×Ö½ÚÊý×éÖУ¬bytereadΪһ´Î¶ÁÈëµÄ×Ö½ÚÊý
while ((byteread = in.read(tempbytes)) != -1){
System.out.write(tempbytes, 0, byteread);
}
} catch (Exception e1) {
e1.printStackTrace();
} finally {
if (in != nul
Ïà¹ØÎĵµ£º
¡¡¡¡6.1 »ù±¾Êý¾ÝÀàÐÍ
¡¡¡¡´«ÊÚÐÂÖª
¡¡¡¡ÔÚJavaÓïÑÔÖУ¬Êý¾ÝÀàÐÍ¿ÉÒÔ·ÖΪÁ½´óÀࣺ
¡¡¡¡1£©»ù±¾ÀàÐÍ£»
¡¡¡¡2£©À©Õ¹ÀàÐÍ¡£
¡¡¡¡ÔÚ±¾Ð¡½ÚÖУ¬ÎÒÃǾÍÒ»ÆðÀ´Ñ§Ï°Ò»ÏÂJavaÓïÑԵĻù±¾Êý¾ÝÀàÐÍ¡£Ëü°üÀ¨£ºboolean¡¢char¡¢byte¡¢int¡¢short¡¢long¡¢float¡¢double°ËÖÖ£º
¡¡¡¡ÀàÐÍ ÃèÊö ȡֵ·¶Î§
¡¡¡¡Boolean ²¼¶ûÐÍ Ö»ÓÐÁ½¸öÖµt ......
http://danadler.com/jacob/
¡¡¡¡http://jakarta.apache.org/poi/
¡¡¡¡http://www.onjava.com/pub/a/onjava/2003/01/22/poi.html
¡¡¡¡http://www.csdn.net/develop/article/15/15311.shtm
¡¡¡¡http://forum.java.sun.com/thread.jsp?forum=40&thread=382666&tstart=0&trang ......
synchronized£º ͬ²½µÄ
synchronizedÔÚ²Ù×÷ÉÏÓÐÁ½ÖÖÓ°Ïì¶ÔÏóµÄÇé¿ö£º
1) ÔÚij¸ö¶ÔÏóʵÀýÄÚ£¬synchronized method(){}¿ÉÒÔ·ÀÖ¹¶à¸öÏß³Ìͬʱ·ÃÎÊÕâ¸ö¶ÔÏóµÄsynchronized·½·¨£¨Èç¹ûÒ»¸ö¶ÔÏóÓжà¸ösynchronized·½·¨£¬Ö»ÒªÒ»¸öÏ̷߳ÃÎÊÁËÆäÖеÄÒ»¸ösynchronized·½·¨£¬ÆäËüÏ̲߳»ÄÜͬʱ·ÃÎÊÕâ¸ö¶ÔÏóÖÐÈκÎÒ»¸ösynchronized·½·¨£ ......
(1)Õ»
package ChapterOne;
public class Stack {
//Õ»Êý×é
long stackArr[];
//Õ»µÄ´óС
int maxSize;
//Õ»µÄ¶¥²¿
int top;
//³õʼ»¯Ò»¸ö´óСΪsizeµÄÕ»
public Stack(int size){
maxSize = size;
stackArr = new long[size];
top = -1;
}
//³öÕ»²Ù×÷
public long pop(){
return sta ......
1.°Ë½øÖÆ×ªÒåÐòÁУº\ + 1µ½3λ5Êý×Ö£»·¶Î§'\000'~'\377'
\0£º¿Õ×Ö·û
2.UnicodeתÒå×Ö·û£º\u + ËĸöÊ®Áù½øÖÆÊý×Ö£»0~65535
\u0000£º¿Õ×Ö·û
3.ÌØÊâ×Ö·û£º¾Í3¸ö
\"£ºË«ÒýºÅ
\'£ºµ¥ÒýºÅ
&nbs ......