最简单的框架

框架层代码：

package org.vhow.framework;

abstract class BaseClass
{
	public void callOnDoSth()
	{
		onDoSth();
	}

	abstract void onDoSth();
//	protected void onDoSth();
}

package org.vhow.framework;

public class FrameworkMain
{
	public static void main(String[] args)
	{
		BaseClass base = new ClientClass();
		base.callOnDoSth();
	}
}

应用层代码：

package org.vhow.framework;

class ClientClass extends BaseClass
{
	@Override
	void onDoSth()
	{
		System.out.println("ClientClass : onDoSth()");
	}
}