syntax - What's the difference between and

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I've seen the wildcard used before to mean any object - but recently saw a use of: <? extends Object> Since all objects extend Object, are these two usages synonymous?
syntax - What's the difference between <?> and <? extends Object
Implementing a type-safe object builder in TypeScript, by Anton Kravchenko, Geek Culture
syntax - What's the difference between <?> and <? extends Object
CRD generation using abstract syntax trees.
syntax - What's the difference between <?> and <? extends Object
generics - Difference between and in Java - Stack Overflow
syntax - What's the difference between <?> and <? extends Object
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syntax - What's the difference between <?> and <? extends Object
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syntax - What's the difference between <?> and <? extends Object
The syntax of the actual extend and include relationships, as they
syntax - What's the difference between <?> and <? extends Object
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syntax - What's the difference between <?> and <? extends Object
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syntax - What's the difference between <?> and <? extends Object
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syntax - What's the difference between <?> and <? extends Object
Inheritance and Composition in Python - GeeksforGeeks
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