What this error is "+[NSTimer scheduledTimerWithInterval:target:selector:userInfo:repeats:]: unrecognized selector sent to class 0x1c864a0' "?

I am writing a simple code that is using NSTimer, but getting error as followed

"+[NSTimer scheduledTimerWithInterval:target:selector:userInfo:repeats:]: unrecognized selector sent to class 0x1c864a0'"

my Code is

-(void)myTimerMethod {

    NSLog(@"myTimerMethod is Called");
    
  myTimer = [NSTimer scheduledTimerWithInterval: 1.0 target:self selector:@selector(targetMethod:) userInfo:nil repeats: YES];
}


-(void)开发者_Python百科 targetMethod:(NSTimer*) theTimer {
    NSLog(@"Me is here at 1 minute delay");
}

and I am making object of of Timer class in my appDelegate.m like as following

Timer *myTimer = [[Timer alloc] init];
[myTimer myTimerMethod]; 

What is the problem in it?

the method is misnamed as declared. it is:

+ (NSTimer *)scheduledTimerWithTimeInterval:(NSTimeInterval)seconds target:(id)target selector:(SEL)aSelector userInfo:(id)userInfo repeats:(BOOL)repeats

This code perfectly working, check it out, just copy and paste the code.

@implementation Timer

-(void)myTimerMethod { NSLog(@"myTimerMethod is Called"); [NSTimer scheduledTimerWithTimeInterval: 1.0 target:self selector:@selector(targetMethod:) userInfo:nil repeats: YES]; }

-(void) targetMethod:(NSTimer*) theTimer { NSLog(@"Me is here at 1 minute delay"); }

@end

In app delegate call

Timer *myTimer = [[Timer alloc] init];

[myTimer myTimerMethod];