What is meant by methodName(Params... params) in Java

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What is it called when you use object… as a parameter?

I'm seeing this kind of pattern a lot in Java. My question is, what is the ... for, and what's it called?

Duplicate of: http://stackoverflow.com/questions/1397895/what-is-it-called-when-you-use-object-as-a-parameter — superluminary, Jul 09 '12 at 09:20

score 4 · Accepted Answer · answered Jun 29 '12 at 12:34

4

It's called "varargs":

http://docs.oracle.com/javase/1.5.0/docs/guide/language/varargs.html

It's a feature of Java 1.5+ and has been around for nearly a decade.

answered Jun 29 '12 at 12:34

Dave Newton

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It's also called "variable arity" in the Java Language Specification: http://docs.oracle.com/javase/specs/jls/se7/html/jls-8.html#jls-8.4.1 – Joseph Ottinger Jun 29 '12 at 13:13

score 1 · Answer 2 · answered Jun 29 '12 at 12:37

1

OK...

(Params... params)

"..." means variable length of parameters.

Moreover doInBackground a method to do the process intensive work in non-ui thread, present in SwingWorker class Java, and in AsyncTask<> in Android.

answered Jun 29 '12 at 12:37

Kumar Vivek Mitra

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What is meant by methodName(Params... params) in Java

2 Answers2