Why is primitive type int changed to object Integer automatically when i put primitve type int to ArrayList in java?
Why is primitive type int changed to object Integer automatically when i put primitve
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Why is primitive type int changed to object Integer automatically when i put primitve type int to ArrayList in java?
Autoboxingautomatically convertsprimitivetypes to their appropriatewrapperobject. The reason behind it is that you can’t put a primitive into a collection. Before Java 5 came along you had to do this yourself but now this is handled automatically for you.See this link here for more details: http://docs.oracle.com/javase/1.5.0/docs/guide/language/autoboxing.html