JavaDb入门（1）

package org.hank;

import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.Statement;

public class JavaDBDemo {
	static Connection conn;

	public static void main(String[] args) {
		String driver = "org.apache.derby.jdbc.EmbeddedDriver";
		String connectionURL = "jdbc:derby:myDatabase;create=true";
		String createString = "CREATE TABLE Employee (NAME VARCHAR(32) NOT NULL, ADDRESS VARCHAR(50) NOT NULL)";
//		String dropTableStr = "Drop table CONTACTS";
		try {
			Class.forName(driver);
		} catch (java.lang.ClassNotFoundException e) {
			e.printStackTrace();
		}
		try {
			conn = DriverManager.getConnection(connectionURL);
			// 执行创建数据库
			Statement stmt = conn.createStatement();
			stmt.executeUpdate(createString);
			// 新增表记录
//			PreparedStatement psInsert = conn.prepareStatement("insert into Employee values (?,?)");
//			psInsert.setString(1, "hank");
//			psInsert.setString(2, "123");
////		psInsert.executeUpdate();
//          // 查询表记录
//			Statement stmt2 = conn.createStatement();
//			ResultSet rs = stmt2.executeQuery("select * from Employee");
//			int num = 0;
//			while (rs.next()) {
//				System.out.println(++num + ": Name: " + rs.getString(1)
//						+ "\n Address:" + rs.getString(2));
//			}
//			// 删除表记录
//			PreparedStatement del = conn.prepareStatement("Delete from Employee");
//			del.executeUpdate();
			
//			rs.close();
		} catch (Exception e) {
			e.printStackTrace();
		}
	}
}