problems using a class extends

Programming Questions

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problems using a class extends

in Programming Questions • 11 months ago

my code is this:

class wavfile extends Minim {
String name=null;
//el constructor
wavfile(String name){
this.name=name;
super();
}

this is a error when make run in main code:

import ddf.minim.*;
wavfile mywav;
setup(){
mywav=new wavfile("piano.wav");
}

any help me?. Thankz in advance.

Replies(11)

Christian..

Re: problems using a class extends

11 months ago

You should post the error message, too. Otherwise we can just guess what's your problem. Maybe your audio file ist not in a data folder within your sketch folder. The structure should be like this: 'sketchFolder/data/piano.wav'

Cheers,
Chris

calsign

Re: problems using a class extends

11 months ago

The constructor Minim() doesn't exist... you have to specify a PApplet.
Try this:

import ddf.minim.*;
class wavfile extends Minim {
String name=null;
wavfile(String name) {
super(parent);
this.name=name;
}
}
PApplet parent;
wavfile mywav;
void setup() {
size(400, 400);
parent = this;
mywav=new wavfile("piano.wav");
}

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Re: problems using a class extends

11 months ago

ok calsign, this it's. but why there is using a PApplet for POO. i don't undestand?

calsign

Re: problems using a class extends

11 months ago

I don't understand your question...
POO? Do you mean OOP? (I don't think so...)

PhiLho

Re: problems using a class extends

11 months ago

As calsign shown, super() must be the first call of the constructor.
Beside, there is probably no interest at all in extending Minim. Better pass the Minim instance as parameter or something like that.

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