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 http://stackoverflow.com/questions/529085/java-how-to-generic-array-creation. You should find your answer. — GGrec, Dec 12 '12 at 15:11

Ilya · Accepted Answer · 2012-12-12T15:14:09.970

2

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

this works well

edited Dec 12 '12 at 15:14

answered Dec 12 '12 at 15:07

Ilya

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You don't need to give type on RHS, while initializing array at the time of declaration. – Rohit Jain Dec 12 '12 at 15:08
and it is applicable for java 7 only – Nandkumar Tekale Dec 12 '12 at 15:09

score 1 · Answer 2 · answered Dec 12 '12 at 15:18

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

Cannot create a generic array in Java

2 Answers2