This is my DrawSomethingCmd:

#import "Command.h";

@interface DrawSomethingCmd : Command {
}
-(void)doSomething;
-(void)execute;
@end

and the DrawSomethingCmd.m's doSomething method is:

-(void)doSomething{
    NSLog(@"did");
}

The Command.h:

#import <Foundation/Foundation.h>

@interface Command : NSObject {

}
-(void)execute;

And Command.m:

#import "Command.h"

@implementation Command
-(id)init{
    return self;
}

-(void)execute{

}
@end

And I have a method like this:

    DrawSomethingCmd *tempCmd = [[DrawSomethingCmd alloc] init];

    [tempCmd doSomething];

But my console didn't show anything. What's going on?