Java IOѧϰ±Ê¼Ç£º×Ö·ûÁ÷
Java IOѧϰ±Ê¼Ç£º×Ö·ûÁ÷
×Ö·ûÁ÷µÄ´¦ÀíºÍ×Ö½ÚÁ÷²î²»¶à£¬API»ù±¾ÉÏÍêȫһÑù£¬¾ÍÊǼÆÁ¿µ¥Î»²»Í¬¡£ÁíÍâ×Ö·ûÁ÷»¹ÌṩһЩÆäËûµÄ´¦ÀíÁ÷£¬±ÈÈç°´ÐжÁÈ¡Á÷¡¢×Ö·û´®Á÷µÈµÈ¡£
ÏÂÃæ¸ø¸öÀý×Ó¿´¿´£º
import java.io.*;
/**
* ×Ö·ûÁ÷²âÊÔ
*
* @author leizhimin 2008-8-27 22:16:44
*/
public class TestIOStream {
public static void main(String[] args) {
testReaderWriter();
testLineNumberReader();
}
/**
* ´ø»º³åµÄ×Ö·ûÁ÷
*/
public static void testReaderWriter() {
int bufsize = 25;
try {
BufferedReader bufferedReader = new BufferedReader(new FileReader(new File("C:\\x.txt")));
BufferedWriter bufferedWriter = new BufferedWriter(new FileWriter(new File("C:\\xb.txt")));
char buf[] = new char[bufsize]; //×Ö·û»º³åÇø
while (bufferedReader.read(buf) != -1) {
bufferedWriter.write(buf);
}
bufferedWriter.flush();
bufferedReader.close();
bufferedWriter.close();
} catch (FileN
Ïà¹ØÎĵµ£º
1¡¢Collection ºÍ CollectionsµÄÇø±ð¡£
CollectionsÊǸöjava.utilϵÄÀ࣬Ëü°üº¬Óи÷ÖÖÓйØjava¼¯ºÏ²Ù×÷µÄ¾²Ì¬·½·¨¡£
CollectionÊǸöjava.utilϵĽӿڣ¬ËüÊǸ÷ÖÖjava¼¯ºÏ½á¹¹µÄ¸¸½Ó¿Ú
2¡¢List, Set, MapÊÇ·ñ¼Ì³Ð×ÔCollection½Ó¿Ú? List£¬SetÊÇ Map²»ÊÇ
3¡¢ArrayListºÍVectorµÄÇø±ð¡£
(1).ͬ²½ÐÔ:VectorÊÇÏß³Ì ......
Ò»¡¢Ï̸߳ÅÊö
Ïß³ÌÊdzÌÐòÔËÐеĻù±¾Ö´Ðе¥Ôª¡£µ±²Ù×÷ϵͳ(²»°üÀ¨µ¥Ï̵߳IJÙ×÷ϵͳ£¬Èç΢ÈíÔçÆÚµÄDOS)ÔÚÖ´ÐÐÒ»¸ö³ÌÐòʱ£¬»áÔÚϵͳÖн¨Á¢Ò»¸ö½ø³Ì£¬¶øÔÚÕâ¸ö½ø³ÌÖУ¬±ØÐëÖÁÉÙ½¨Á¢Ò»¸öỊ̈߳¨Õâ¸öÏ̱߳»³ÆÎªÖ÷Ị̈߳©À´×÷ΪÕâ¸ö³ÌÐòÔËÐеÄÈë¿Úµã¡£Òò´Ë£¬ÔÚ²Ù×÷ϵͳÖÐÔËÐеÄÈκγÌÐò¶¼ÖÁÉÙÓÐÒ»¸öÖ÷Ï̡߳£
½ø³ÌºÍÏß³ÌÊÇÏÖ´ú²Ù× ......
¡ñÒÑÖªÔ²µÄÃæ»ýArea=π*r*r£¬Çó°ë¾¶r¡£
import javax.swing.JOptionPane;
public class T6 {
public static void main(String args[]) {
String s = JOptionPane.showInputDialog("ÇëÊäÈëÔ²Ãæ»ý£º");
double Area = Double.parseDouble(s);
double r;
r = Math.sqrt(Area / M ......
Main.cpp (Win/*nix)
#include "FlexSecurityBox.h"
int main(int argc, char ** argv) {
char * address;
short port;
if (argc == 2)
{
address = "0.0.0.0";
port = atoi(argv[1]);
} else if (argc == 3)
{
address = argv[1];
port = atoi(argv[2]);
} else
{
printf("Y ......