Command Pattern - object dispatching

Java

by techbard 2016. 7. 18. 14:53

# ICommand.java

public interface ICommand {
public abstract void execute();
}

# Invoker.java

public class Invoker {
public void execute(ICommand command) {
command.execute();
}
}

# ToggleCommand.java

public class ToggleCommand implements ICommand {
private boolean isOn;

public ToggleCommand() {
this.isOn = false;
}

@Override
public void execute() {
if (isOn) {
isOn = false;
System.out.println("boolean: " + this.isOn);
} else {
isOn = true;
System.out.println("boolean: " + this.isOn);
}
}
}

# Main.java

public class Main {
public static void main(String[] args) {
ToggleCommand toggleCommand = new ToggleCommand();
Invoker invoker = new Invoker();

invoker.execute(toggleCommand);
invoker.execute(toggleCommand);
invoker.execute(toggleCommand);
}
}