PrepareStatement

import java.sql.DriverManager;
import java.sql.Connection;
import java.sql.PreparedStatement;
import java.sql.ResultSet;


public class PrepareStatementTest {
	public static void main(String[] args) throws Exception{
		Class.forName("com.mysql.jdbc.Driver");
		String url = "jdbc:mysql://localhost:3306/test";
		Connection cnn = DriverManager.getConnection(url,"root","123");
		String sql = "insert user values(null,?,'123@163.com','123')";
		String sql2 = "select * from user";
		try
		(
			PreparedStatement pst = cnn.prepareStatement(sql);
			PreparedStatement pst2 = cnn.prepareStatement(sql2);
		)
		{
			pst.setString(1, "xiaowang");
			pst.executeUpdate();
			ResultSet rs = pst2.executeQuery();
			while(rs.next())
			{
				System.out.println(rs.getString(1)+"\t"+rs.getString(2)+"\t"
						+rs.getString(3)+"\t"+rs.getString(4));
			}
		}
	}
}