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| public interface Implementor { void implOperator(); }
public class ConcreteImplementorA implements Implementor{ @Override public void implOperator() { System.out.println("实现A"); } }
public class ConcreteImplementorB implements Implementor{ @Override public void implOperator() { System.out.println("实现B"); } }
public abstract class Abstraction {
private Implementor impl;
public Abstraction(Implementor impl) { this.impl = impl; }
public void operator(){ impl.implOperator(); } }
public class RefinedAbstraction extends Abstraction{
public RefinedAbstraction(Implementor impl){ super(impl); }
public void otherOperator(){ operator(); } }
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