📄 switch.java
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package com.javapatterns.command.lightandfan;
public class Switch
{
private Command upCommand;
private Command downCommand;
public Switch(Command up, Command down)
{
upCommand = up;
downCommand = down;
}
void flipUp()
{
// invoker calls back concrete Command, which executes the Command on the receiver
upCommand.execute();
}
void flipDown()
{
downCommand.execute();
}
}
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