php，java实现策略模式

public interface IStrategy {

public void doSomething();
}

public class ConcreteStrategy implements IStrategy {

@Override
public void doSomething() {

}
}

public class Context {

private IStrategy strategy = null;

public Context(IStrategy strategy){
this.strategy = strategy;
}

public void doAnything(){
strategy.doSomething();
}
}

interface IStrategy
{
public function doSomething();
}

class ConcreteStrategy implements IStrategy
{
public function doSomething()
{
echo 'doSomething';
}
}

class Context
{
private $strategy;

public function __construct(IStrategy $strategy)
{
$this->strategy = $strategy;
}

public function doAnything()
{
$this->strategy->doSomething();
}
}

$context = new Context(new ConcreteStrategy());
$context->doAnything();