java BufferWriterºÍPrintWriterЧÂÊ
ΪʲôÎÒÓÃBufferWriter±È²»Óû¨·ÑµÄʱ¼ä»¹Òª¶à£¿
¶øÓÃBufferOutputStreamʱ±È²»ÓÃЧÂÊÒª¸ßÊ®¼¸±¶
ÊDz»ÊÇÎҵĴúÂëÓÐÎÊÌâ
Çë¸ßÊÖ¸ø¸ö½âÊÍ
Java code:
import java.io.*;
public class BufferChar
{
public static void main(String[] args)
{
try
{
//Using BufferedWriter
long start=System.currentTimeMillis();
FileWriter fw_out=new FileWriter("file1.txt");
//BufferedWriter bfw_out=new BufferedWriter(fw_out);
PrintWriter out=new PrintWriter(new BufferedWriter(fw_out));
for(int i=0;i<10000;i++)
out.println((int)(Math.random()*10));
out.close();
long stop=System.currentTimeMillis();
//Using PrintWriter
long start1=System.currentTimeMillis();
FileWriter fw_out1=new FileWriter("file2.txt");
PrintWriter out1=new PrintWriter(fw_out1);
for(int i=0;i<10000;i++)
out1.println((int)(Math.random()*10));
out1.close();
long stop1=System.currentTimeMillis();
System.out.println("Time passed(Using BufferedWriter):"+(stop-start));
System.out.println("Time passed(Using PrintWriter):"+(stop1-start1));
Ïà¹ØÎÊ´ð£º
ÏÖÔÚ»¹ÓкܶàÈ˸㲻¶®PHPºÍJAVA¿ª·¢µÄÐͬOAµ½µ×ÓÐʲô²»Í¬£¬¶Ô×Ô¼ºµ½µ×ÓÐʲôӰÏ죬ÒÔÖÁÓÚ×ö³öÁË´íÎóµÄÑ¡Ôñ¶øêݺ¦ÎÞÇî¡£±ÊÕ߸ù¾ÝÁ½ÖÖ¼¼ÊõµÄÌØµãÖØÐÂÕûÀíÁËÒ»¸ö¶Ô±È£¬¸ø¹ØÐÄÐͬOA¼¼ÊõµÄ¶ÁÕß×ö¸ö²Î¿¼¡£
»ªÌ춯Á¦Ð ......
ÎÒÔÚjspÒ³Ãæ´æÉÏÒ»¸ösession,±¾Ò³Ã滹¿ÉÒÔÈ¡³öÖµÀ´.
µ«ÊÇһˢÐÂ,»òÕß´ò¿ªÐµÄÒ³Ãæ¾ÍÈ¡²»³öÖµÀ´ÁË.
Ææ¹ÖµÄÊÇ,ÎÒ²âÊÔÁíÒ»¸ö³ÌÐòʱºò
ÔÚjspÒ³Ãæ´æÉÏÒ»¸ösession,±¾Ò³Ãæ¿ÉÒÔÈ¡³öÖµÀ´,ˢлò´ò¿ªÐÂÒ³ÃæÖµÄÜÈ¡³öÀ´ÁË.
......
²éAPI£¬¿´µ½FeatrueFactoryÓÐÕâ¸ö·½·¨
public Feature createPolyLine(double[][] thePoints,
R ......
ÎÒÏëʹÓÃLuceneµÄ´úÂ룬·¢ÏÖÒªimportÒ»ÅúÎļþ£º
============
import org.apache.lucene.analysis.standard.StandardAnalyzer;
import org.apache.lucene.document.Document;
¡¡¡¡¡¡
===== ......
import java.io.*;
class FileTest
{
public static void main(String [] args) throws Exception
{
File fDir=new File(File.separator);
String strFile="javaÔ´´úÂë²âÊÔ"+File.separato ......