javageneric-programming
Need help about wildcard generic types in Java
I am learning generic programming in java. I saw these charts in Core Java (Edition 9):
And I saw these charts in Introduction to Java Programming Comprehensive Version Tenth Edition:
But I believe it should be this instead:
Could someone tell me whether I am right?
Solution
Yes, you are correct. The mistake is listed in the Errata for this edition (which might be useful for similar confirmations in the future):
Chapter 19
Page 749, Figure 19.6, change the last "A<B' subclass>" to "A<B' superclass>".
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