import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.ResultSet;
import java.sql.Statement;
public class oracle {
public static final String OracleDriverName="oracle.jdbc.driver.OracleDriver";
public static void main(String []args)
{
try{
Class.forName("oracle.jdbc.driver.OracleDriver");
String oracleUrlToConnect="jdbc:oracle:thin:@localhost:1521:db";
String user="admin";
String password="a126";
Connection myConnection=DriverManager.getConnection(oracleUrlToConnect,user,password);
Statement st=myConnection.createStatement();
ResultSet rs=st.executeQuery("select * from users");
while(rs.next())
{
System.out.println(rs.getString(1));
}
}catch(Exception e){
e.printStackTrace();
System.out.println(e.getStackTrace());
}
}
}
import java.sql.DriverManager;
import java.sql.ResultSet;
import java.sql.Statement;
public class oracle {
public static final String OracleDriverName="oracle.jdbc.driver.OracleDriver";
public static void main(String []args)
{
try{
Class.forName("oracle.jdbc.driver.OracleDriver");
String oracleUrlToConnect="jdbc:oracle:thin:@localhost:1521:db";
String user="admin";
String password="a126";
Connection myConnection=DriverManager.getConnection(oracleUrlToConnect,user,password);
Statement st=myConnection.createStatement();
ResultSet rs=st.executeQuery("select * from users");
while(rs.next())
{
System.out.println(rs.getString(1));
}
}catch(Exception e){
e.printStackTrace();
System.out.println(e.getStackTrace());
}
}
}
本文提供了一个使用Java连接Oracle数据库并查询数据的完整示例。通过加载Oracle JDBC驱动,建立数据库连接,执行SQL查询并将结果打印出来。该示例适用于初学者了解如何在Java中操作Oracle数据库。
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