testjdbc.java

来自「一些介绍JAVA语言特性的 作用 的例子」· Java 代码 · 共 33 行

import java.io.*;
public class TestJDBC {
	public static void main(String[] args) throws Exception{
		FileReader fr=new FileReader("dbConfig.txt");
		BufferedReader in=new BufferedReader(fr);
		String name=in.readLine();
		Driver d=getDriver(name);
		d.connect();
	}
	public static Driver getDriver(String name) throws Exception{
		Class c=Class.forName(name);
		return (Driver)c.newInstance();
	}
}

interface Driver{
	void connect();
}
class OracleDriver implements Driver{
	public void connect(){
		System.out.println("Connect Oracle");
	}
}
class SqlServerDriver implements Driver{
	public void connect(){
		System.out.println("Connect SqlServer");
	}
}
class MySqlDriver implements Driver{
	public void connect(){
		System.out.println("Connect MySql");
	}
}