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[W6.4f][W15-B1]Yang Yuqing #741

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[W6.4f][W15-B1]Yang Yuqing #741

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5 changes: 2 additions & 3 deletions src/seedu/addressbook/commands/Command.java
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Original file line number Diff line number Diff line change
Expand Up @@ -38,10 +38,9 @@ public static String getMessageForPersonListShownSummary(List<? extends ReadOnly

/**
* Executes the command and returns the result.
* This is an abstract method, should override in subclasses.
*/
public CommandResult execute(){
throw new UnsupportedOperationException("This method should be implement in child classes");
}
public abstract CommandResult execute();

//Note: it is better to make the execute() method abstract, by replacing the above method with the line below:
//public abstract CommandResult execute();
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