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Typically command pattern is implemented using

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interfaces and concrete classes. Refactor the
code to use the same
This commit is contained in:
Rakesh Venkatesh 2020-08-03 16:51:30 +02:00
parent 9ff5b9e7c0
commit 3ae7466647
3 changed files with 7 additions and 8 deletions
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11
command/src/main/java/com/iluwatar/command/Command.java
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@ -26,15 +26,14 @@ package com.iluwatar.command;
/**
* Interface for Commands.
*/
public abstract class Command {
public interface Command {
public abstract void execute(Target target);
public void execute(Target target);
public abstract void undo();
public void undo();
public abstract void redo();
public void redo();
@Override
public abstract String toString();
public String toString();
}

2
command/src/main/java/com/iluwatar/command/InvisibilitySpell.java
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@ -26,7 +26,7 @@ package com.iluwatar.command;
/**
* InvisibilitySpell is a concrete command.
*/
public class InvisibilitySpell extends Command {
public class InvisibilitySpell implements Command {
private Target target;

2
command/src/main/java/com/iluwatar/command/ShrinkSpell.java
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@ -26,7 +26,7 @@ package com.iluwatar.command;
/**
* ShrinkSpell is a concrete command.
*/
public class ShrinkSpell extends Command {
public class ShrinkSpell implements Command {
private Size oldSize;
private Target target;