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javaÖÐStringÀàµÄ¹¹Ô캯Êý

StringÀàÖеĹ¹Ô캯Êý
String(); ¹¹ÔìÒ»¸ö¿Õ×Ö·û´®¶ÔÏó
String(byte[] bytes); ͨ¹ýbyteÊý×é¹¹Ôì×Ö·û´®¶ÔÏó
String(byte[] bytes,int offset,int length);ͨ¹ýbyteÊý×飬´Óoffset¿ªÊ¼£¬×ܹ²length³¤µÄ×Ö½Ú¹¹Ôì×Ö·û´®¶ÔÏó
String(char[] value); ͨ¹ýcharÊý×é¹¹Ôì×Ö·û´®¶ÔÏó
String(byte[] char,int offset,int length);ͨ¹ýcharÊý×飬´Óoffset¿ªÊ¼£¬×ܹ²length³¤µÄ×Ö½Ú¹¹Ôì×Ö·û´®¶ÔÏó
String(String original); ¹¹ÔìÒ»¸öoriginalµÄ¸±±¾£¬¿½±´Ò»¸öoriginal
String(StringBuffer buffer);ͨ¹ýStringBufferÊý×é¹¹Ôì×Ö·û´®¶ÔÏó
public class StringClassTest {
    public static void main(String[] args) {
        // ×Ö½ÚÊý×é
        byte[] bArray = { 'a', 'b', 'c', 'd', 'e', 'f', 'g', 'h' };
        // ×Ö·ûÊý×é
        char[] cArray = { 'a', 'b', 'c', 'd', 'e', 'f', 'g', 'h' };
        //ÉùÃ÷Ò»¸öStringBuffer
        StringBuffer strbuf = new StringBuffer("strbuf");
        // ʵÀýÒ»¸öString¶ÔÏó
        String str = new String("str abcd");
        //ʵÀýÒ»¸öString¶ÔÏó ͨ¹ýÒ»¸öbtyeÊý×é¹¹Ôì×Ö·û´®¶ÔÏó£¨×Ö½ÚÊý×飩
        String strb = new String(bArray);
        //ʵÀýÒ»¸öString¶ÔÏó ͨ¹ýÒ»¸öcharÊý×é¹¹Ôì×Ö·û´®¶ÔÏó£¨×Ö·ûÊý×飩
        String strc = new String(cArray);
        //ʵÀýÒ»¸öString¶ÔÏó ͨ¹ýÒ»¸öcharÊý×é¹¹Ôì×Ö·û´®¶ÔÏó(×Ö½ÚÊý×飬¿ªÊ¼µÄÊý¾Ý£¬½ØµÃÊý¾Ý³¤¶È)
        String strbIndex = new String(bArray, 1, 5);
        //ʵÀýÒ»¸öString¶ÔÏó ͨ¹ýÒ»¸öcharÊý×é¹¹Ôì×Ö·û´®¶ÔÏó£¨×Ö·ûÊý×飬¿ªÊ¼µÄÊý¾Ý£¬½ØµÃÊý¾Ý³¤¶È£©
        String strcIndex = new String(cArray, 1, 2);
        //ʵÀýÒ»¸ö


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Javaͬ²½»úÖÆ£ºsychronized¶Ô´úÂëÓ°Ïì

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Java¶Ô¶àÏ̵߳ÄÖ§³ÖÓëͬ²½»úÖÆÉîÊÜ´ó¼ÒµÄϲ°®£¬Ëƺõ¿´ÆðÀ´Ê¹ÓÃÁËsynchronized¹Ø¼ü×־ͿÉÒÔÇáËɵؽâ¾ö¶àÏ̹߳²ÏíÊý¾Ýͬ²½ÎÊÌâ¡£µ½µ×ÈçºÎ£¿¨D¨D»¹µÃ¶Ôsynchronized¹Ø¼ü×ÖµÄ×÷ÓýøÐÐÉîÈëÁ˽â²Å¿É¶¨ÂÛ¡£ ×ܵÄ˵À´£¬synchronized¹Ø¼ü×Ö¿ÉÒÔ×÷Ϊº¯ÊýµÄÐÞÊηû£¬Ò²¿É×÷Ϊº¯ÊýÄÚµÄÓï¾ä£¬Ò ......

javaʵÏÖµÄFTPÉÏ´«ÏÂÔØ¿Í»§¶Ë

org.apache.commons.net.ftp.*ÖеÄFTPClientÀàʵÏÖµÄFTPÉÏ´«ÏÂÔØ¹¦ÄÜ£º
Ðèµ¼ÈëApacheµÄcommos-netµÄjar°ü£¬Èôµ¼ÈëµÄÊÇ1.4°æ±¾µÄ°ü£¬ÔòFTPFile[] fileList = ftpClient.listFiles()µÄÖ´Ðйý³ÌÖпÉÄܻᱨ´í£¬´Ëʱ¸ü»»µ¼Èë2.0°æ±¾µÄjar°ü£¬ÎÊÌâ¼´¿É½â¾ö¡£
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package com.java.ftp;
import java.io.File;
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³ÌÐòÖеıàÂë·ç¸ñÈÃÎÒÃǵıà³Ì¹¤×÷±äµÃÇáËÉ£¬ÌرðÊdzÌÐòά»¤Ô±£¬ËûÃÇÒª¾­³£ÔĶÁÆäËûÈ˱àдµÄ³ÌÐò±àÂ룬ÕâÒ»µãÓÈÆäÍ»³ö¡£±àÂë¹æ·¶´Ó¸ù±¾ÉϽâ¾öÁ˳ÌÐòά»¤Ô±µÄÄÑÌ⣻¹æ·¶µÄ±àÂëÔĶÁºÍÀí½âÆðÀ´¸üÈÝÒ×£¬Ò²¿ÉÒÔ¿ìËٵIJ»·ÑÁ¦ÆøµÄ½è¼ø±ðÈ˵ıàÂë¡£¶Ô½«À´Î¬»¤Äã±àÂëµÄÈËÀ´Ëµ£¬ÄãµÄ±àÂëÔ½ÓÅ»¯£¬ËûÃǾÍԽϲ»¶ÄãµÄ±àÂ룬Àí½âÆðÀ´Ò²¾ÍÔ½ ......

×ܽἸÖÖJava×Ö·û´®·´×ªµÄʵÏÖ·½·¨

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/**
* @(#)ReverseString.java
*
* ReverseString application
*
* @author
* @version 1.00 2010/4/20
*/
import java.util.*;
import java.io.*;

public class ReverseString {


public static void main(String[] args) throws IOException{
......

JAVAðÅÝÅÅÐòËã·¨µÄ¼¸ÖÖʵÏÖ·½·¨

±¾Îijö×Ô “ÌÆ´óÀÏʦ” ²©¿Í£¬ÇëÎñ±Ø±£Áô´Ë³ö´¦http://tscjsj.blog.51cto.com/412451/84561
public class Bubble {
// ðÅÝÅÅÐòº¯Êý1
public static void bubbleSort1(Comparable []data){

int position,scan;
Comparable temp;
for(position = data.length-1;position>=0;position--){
......
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