JDBC连接Oracle数据库及List 的遍历

package com.lliu.JDBC;

public class AAA {
public AAA(){

}
public AAA(int ID, String name, String dept){
this.setID(ID);
this.setName(name);
this.setDept(dept);
}
public int ID;
public String name;
public String dept;
public int getID() {
return ID;
}
public void setID(int iD) {
ID = iD;
}
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
public String getDept() {
return dept;
}
public void setDept(String dept) {
this.dept = dept;
}

}

package com.lliu.JDBC;

import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.PreparedStatement;
import java.sql.ResultSet;
import java.sql.SQLException;
import java.util.ArrayList;
import java.util.Iterator;
import java.util.List;

public class JDBCConnection {
public static void main(String[] args){
Connection conn = null;
PreparedStatement stmt = null;
ResultSet rs = null;
List<AAA> list =new ArrayList<AAA>();
AAA a = new AAA();
try{
Class.forName("oracle.jdbc.driver.OracleDriver");
conn = DriverManager.getConnection(
"jdbc:oracle:thin:@127.0.0.1:1521:xe",
"system",
"12345");
stmt = conn.prepareStatement("select ID,NAME,DEPT from AAA");
rs = stmt.executeQuery();
while(rs.next()){
list.add(new AAA(rs.getInt(1),rs.getString(2),rs.getString(3)));
System.out.println(rs.getString(2));
}
}catch(Exception e){
e.printStackTrace();
}
finally{
if(rs != null){
try {
rs.close();
} catch (SQLException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
if(stmt != null){
try {
stmt.close();
} catch (SQLException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
if(conn != null){
try {
conn.close();
} catch (SQLException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
}
Iterator<AAA> it = list.iterator();
while(it.hasNext()){
System.out.println(it.next().ID);
}
}
}