Cannot create a generic array in Java

Question

I try to create a generic array but I'm taking the error of the title.

 ByteConverter<Product> byteconverter = new ByteConverter<Product>();

 //into an inner class I have to declare a final field 
 final ByteConverter<Product>[] byteconverter2 = {byteconverter};

So, I searched at the Stackoverflow for a possible solution. I found something similar here: Cannot create an array of LinkedLists in Java...? , so I canged my code to the following:

 final ByteConverter<Product>[] byteconverter2 = {(ByteConverter<Product>[])byteconverter};

but I still take the same error. I can't understand why..Any help please?

Read through stackoverflow.com/questions/529085/…. You should find your answer. — Georgian
– Georgian, Commented Dec 12, 2012 at 15:11
@Rohit Jain: Cannot create a generic array of ByteConverter<Product> — Nick Robertson
– Nick Robertson, Commented Dec 12, 2012 at 15:11

Ilya · Accepted Answer · 2012-12-12 15:14:09Z

2

final ByteConverter<Product>[] byteconverter2 = 
   new ByteConverter[]
   {
      byteconverter   
   };

this works well

edited Dec 12, 2012 at 15:14

answered Dec 12, 2012 at 15:07

Ilya

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2 Comments

Rohit Jain Over a year ago

You don't need to give type on RHS, while initializing array at the time of declaration.

Nandkumar Tekale Over a year ago

and it is applicable for java 7 only

Evgeniy Dorofeev · Accepted Answer · 2012-12-12 15:18:16Z

1

This compiles, though with a warning

    ByteConverter<Product> byteconverter = new ByteConverter<Product>();
    ByteConverter<Product>[] byteconverter2 = new ByteConverter[] { byteconverter };

Read here http://docs.oracle.com/javase/tutorial/java/generics/restrictions.html about restrictions for generics

answered Dec 12, 2012 at 15:18

Evgeniy Dorofeev

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