java ·ÃÎÊaccess
import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.ResultSet;
import java.sql.SQLException;
import java.sql.Statement;
public class LinkAccess {
/**
* @param args
*/
public static void main(String[] args) {
// TODO Auto-generated method stub
Connection con=null;
Statement stmt=null;
try {
Class.forName("sun.jdbc.odbc.JdbcOdbcDriver");
String url = "jdbc:odbc:driver={Microsoft Access Driver (*.mdb)};DBQ=E://test//jdbc.mdb";
// "jdbc:odbc:driver={Microsoft Access Driver(*.mdb)};DBQ=D://test//jdbc.mdb";
// ÉÙÒ»¸ö¿Õ¸ñ¶¼²»ÐС£¡£¡£
con = DriverManager.getConnection(url,"sa","");
stmt = con.createStatement();
String query = "select * from user";
ResultSet rs = stmt.executeQuery(query);
while(rs.next())
{
System.out.println("connection is ok.");
System.out.println(rs.getInt("id"));
&
Ïà¹ØÎĵµ£º
¹Ø¼ü×Ö: µ×²ãÊý¾Ý Ãû´Ê½âÊÍ£º ²¹Â룺1 ÔÚ¼ÆËã»úϵͳÖУ¬ÊýÖµÒ»ÂÉÓв¹ÂëÀ´±íʾ(´æ´¢). ʹÓò¹Âë,¿ÉÒÔ½«·ûºÅλºÍÆäËûλͳһ´¦Àí;ͬʱ,¼õ·¨Ò²¿É°´¼Ó·¨À´´¦Àí.ÁíÍâ,Á½¸öÓò¹Âë±íʾµÄÊý¾ÝÏà¼Óʱºò,Èç¹û×î¸ßλ(·ûºÅλ)ÓнøÎ»,Ôò½øÎ¥±»ÉáÆú. 2 ²¹ÂëÓëÔÂëµÄת»»¹ý³Ì¼¸ºõÊÇÏàͬµÄ ÊýÖµµÄ²¹Âë±íʾҲ·ÖÁ½ÖÖÇé¿ö£º £¨1£©ÕýÊýµÄ²¹Âë:ÓëÔ ......
»ñµÃmysqlºÍoracleÁ´½ÓµÄÀà
import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.SQLException;
public class ConnectDB {
private static final String MYSQL = "jdbc:mysql://";
private static final String ORACLE = "jdbc:oracle:thin:@";
private ConnectD ......
package stone;
public class PrimerNumber {
public static void main(String[] args) {
int MAX_NUMBER = 100;
boolean[] notPrimer= new boolean[MAX_NUMBER];
for(int i=2;i<=MAX_NUMBER;i++){
if(!notPrimer[i-1]){
for(int j=2*i;j<=MAX_NUMBER;j++){
if(j%i==0) notPrimer[j-1]=tr ......
×î½üÒª¸Äдһ¸öºËÐļÓÃÜÈÏÖ¤À࣬´ÓC#¸Äд³ÉJava¡£
·¢ÏÖÔÚµ÷ÊÔʱ£¬¼ÓÃܵÄÊý¾ÝÎÞÂÛÈçºÎÒ²¶Ô²»ÉÏ¡£
¾¹ý¸ú×Ù£¬·¢ÏÖÎÊÌâ³öÔÚC#ºÍJava byteÀàÐ͵ÄÇø±ðÉÏ£ºÔÚC#Àï byteÀàÐÍÊÇÎÞ·ûºÅµÄ£¬¶øJavaÀïÊÇÓзûºÅµÄ£¬ËùÒÔC#ÀïµÄ129µ½JavaÀï¾Í³ÉÁ˸ºÊý¡£
·¢ÏÖÁËÎÊÌ⣬½â¾ö¾Í±È½ÏÈÝÒ×ÁË£¬Õë¶ÔJavaµÄbyte£¬²ÉÓÃIntÀ´½øÐд洢¡£
ͨ¹ýÈçÏ´ú ......