php,java实现组合模式

public abstract class AbsPart {

public abstract void getInfo();
}

public class Leaf extends AbsPart {
@Override
public void getInfo() {

}
}

public class ConcretePart extends AbsPart {

private List<AbsPart> list = new ArrayList<>();

public void addPart(AbsPart absPart){
this.list.add(absPart);
}

@Override
public void getInfo() {

}
}

abstract class AbsPart
{
public abstract function getInfo();
}

class Leaf extends AbsPart
{
public function getInfo()
{
echo 'Leaf';
}
}

class ConcretePart extends AbsPart
{
private $arrPart;

public function __construct()
{
$arrPart = array();
}

public function addPart(AbsPart $part)
{
$this->array[] = $part;
}

public function getInfo()
{
echo 'ConcretePart';
}
}