Confused About Something - Topic

Member

Posts: 31,390

Joined: Mar 25 2009

Gold: 99.00

Mar 14 2019 05:37pm

Code

btnPrint.setOnClickListener(new Button.OnClickListener() {
@Override
public void onClick(String title) {
System.out.println(title + " was clicked");

}
});

I'm curious why ) is at the end:

);

^that part.....

Shouldn't it be:

Code

btnPrint.setOnClickListener(new Button.OnClickListener()) {
@Override
public void onClick(String title) {
System.out.println(title + " was clicked");

}
};

A few different changes, hopefully you can see them. Thanks!

drwl

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Posts: 75

Joined: Feb 10 2019

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Mar 14 2019 09:08pm

Quote (ferf @ Mar 14 2019 03:37pm)

Code

btnPrint.setOnClickListener(new Button.OnClickListener() {
@Override
public void onClick(String title) {
System.out.println(title + " was clicked");

}
});

I'm curious why ) is at the end:

);

^that part.....

Shouldn't it be:

Code

btnPrint.setOnClickListener(new Button.OnClickListener()) {
@Override
public void onClick(String title) {
System.out.println(title + " was clicked");

}
};

A few different changes, hopefully you can see them. Thanks!

cause of

Code

btnPrint.setOnClickListener(

notice the parenthesis

pzold

Member

Posts: 8,992

Joined: Mar 24 2013

Gold: 18,115.00

Mar 16 2019 01:26pm

The syntax you are looking for is an anonymous inner class.

More: https://stackoverflow.com/questions/355167/how-are-anonymous-inner-classes-used-in-java

ferf

Member

Posts: 31,390

Joined: Mar 25 2009

Gold: 99.00

Mar 16 2019 01:33pm

Quote (drwl @ Mar 14 2019 11:08pm)

cause of

Code

btnPrint.setOnClickListener(

notice the parenthesis

Yes, but wouldn't usually the parenthesis go here?

btnPrint.setOnClickListener(new Button.OnClickListener()) {
@Override
public void onClick(String title) {
System.out.println(title + " was clicked");

}
};

pzold

Member

Posts: 8,992

Joined: Mar 24 2013

Gold: 18,115.00

Mar 16 2019 01:43pm

Quote (ferf @ Mar 16 2019 08:33pm)

Did you even look at my post?

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