//super class(出力系クラス群の共通クラス)
public abstract class Write {
    protected String data;
    public abstract void write(); 
    public Write(){ }
    public Write(String data) {
        this.data = data;
    }
}

//basic write class(基本出力系クラス)
public class ConsoleWrite extends Write{
    public void write() {
       System.out.println(super.data);
    } 
    ConsoleWrite(){ }
    ConsoleWrite(String data){
        super(data);
    }
}

//filter write class(機能拡張出力系クラス)
public class BufferedWrite extends Write{
    private ConsoleWrite cw;
    public void write() {
        for(int i=0; i<10; i++){
            cw.write(); 
        }       
     } 
    BufferedWrite(){ }
    BufferedWrite(ConsoleWrite cw){
        super();
        this.cw = cw;
    }
}
 
//---------------------------------------------------------------
public class Test{
	public static void main(String[] args) {
        	ConsoleWrite cw = new ConsoleWrite("出力データ内容");
        	cw.write();
        	System.out.println("---------------------------");
        	BufferedWrite bfw = new BufferedWrite(cw);
        	bfw.write();
    	} 
}//end