java数据库连接及测试(sqlserver)
package com.test.util;
import java.sql.*;
public class ConnectDB {
private Connection conn=null;
private PreparedStatement pt=null;
private ResultSet rs=null;
private String uname="sa";
private String upwd="sa";
private String url="jdbc:microsoft:sqlserver://localhost:1433;databaseName=vsktest";
public Connection getConnection() throws Exception{
Class.forName("com.microsoft.jdbc.sqlserver.SQLServerDriver");
conn=DriverManager.getConnection(url, uname, upwd);
return conn;
}
public void closeDB() throws Exception{
if(rs!=null){
rs.close();
}
if(pt!=null){
pt.close();
}
if(conn!=null){
conn.close();
}
}
public static void main(String[] args) throws Exception {
Connection conn=new ConnectDB().getConnection();
PreparedStatement pt=conn.prepareStatement("select * from test");
ResultSet rs=pt.executeQuery();
while(rs.next())
{
System.out.println(rs.getString("testname"));
}
}//end main
}
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很智慧，颇有数学中无穷分析的意味
真爱死java了
public class FunnyNumbers {
public static void main(String[] args) {
double largeNum = (int)Math.exp(4000.0);
//int 不能除0
//Exception in thread "main" java.lang.ArithmeticException: / by zer oat FunnyNumbers.main(FunnyNumbers.j ......
//传递参数，和c中传地址有点像
public class ArrayParameters {
public static void changeOrNot (int i, double[] x) {
i =-1;
x[0] = -2.0;
double[] y = x;
y[1] = -3.0;
double[] z = {4.0, 4.0, 4.0};
x = z;
}
public static void main (String[] args) {
String s1 = ......
/**
* 获取服务器的web地址
* @return
*/
private String getWebPath(){
String _tempStr = Thread.currentThread().getContextClassLoader().getResource("").toString();
_tempStr=_tempStr.substring ......
最近项目中有需要用到股价，于是在网上找了一番，没有一个直接就能用的。自己摸索了一下，终于搞定一个顾大家参考。
package test;
import java.util.Arrays;
import javax.xml.namespace.QName;
import org.apache.axis.client.Call;
import org.apache.axis.client.Service;
/**
*
* 功能概述：<br>
* ......
