Comments on: How’d this String get into my List<Integer>?! http://blog.anthonychaves.net/2007/03/12/howd-this-string-get-into-my-list/ Life is software and jujitsu Mon, 01 Feb 2010 17:22:12 +0000 http://wordpress.org/?v=2.9.1 hourly 1 By: Ricky Clarkson http://blog.anthonychaves.net/2007/03/12/howd-this-string-get-into-my-list/comment-page-1/#comment-621 Ricky Clarkson Wed, 14 Mar 2007 02:37:24 +0000 http://blog.anthonychaves.net/java/2007/03/12/howd-this-string-get-into-my-list#comment-621 I'm not concerned with developers who ignore warnings, as I don't currently work with any of them. If I did, I'd be concerned with not working with them, or changing their habits, rather than criticising the compiler for giving warnings rather than errors. A good optional typing implementation, whenever we see one, will give warnings, not errors. I’m not concerned with developers who ignore warnings, as I don’t currently work with any of them. If I did, I’d be concerned with not working with them, or changing their habits, rather than criticising the compiler for giving warnings rather than errors.

A good optional typing implementation, whenever we see one, will give warnings, not errors.

]]> By: Anthony Chaves http://blog.anthonychaves.net/2007/03/12/howd-this-string-get-into-my-list/comment-page-1/#comment-620 Anthony Chaves Wed, 14 Mar 2007 01:57:51 +0000 http://blog.anthonychaves.net/java/2007/03/12/howd-this-string-get-into-my-list#comment-620 Hi Ricky, Compiling that program with javac gets this output: javac net\anthonychaves\sandbox\generics\WrongTypePut.java Note: net\anthonychaves\sandbox\generics\WrongTypePut.java uses unchecked or unsafe operations. Note: Recompile with -Xlint:unchecked for details. Obviously a careful developer would then recompile with -Xlint:unchecked and find out what the problem is and fix it. A few concerns are careless developers and using 3rd party libraries to which you don't have access to the source code. A 3rd party library not using Generics can do what was shown in the example and worse and all the warnings in the world won't help you if you depend on that library for major functionality. Thanks for reading and thanks even more for commenting! Anthony Hi Ricky,

Compiling that program with javac gets this output:

javac net\anthonychaves\sandbox\generics\WrongTypePut.java
Note: net\anthonychaves\sandbox\generics\WrongTypePut.java uses unchecked or unsafe operations.
Note: Recompile with -Xlint:unchecked for details.

Obviously a careful developer would then recompile with -Xlint:unchecked and find out what the problem is and fix it. A few concerns are careless developers and using 3rd party libraries to which you don’t have access to the source code. A 3rd party library not using Generics can do what was shown in the example and worse and all the warnings in the world won’t help you if you depend on that library for major functionality.

Thanks for reading and thanks even more for commenting!

Anthony

]]> By: Ricky Clarkson http://blog.anthonychaves.net/2007/03/12/howd-this-string-get-into-my-list/comment-page-1/#comment-618 Ricky Clarkson Tue, 13 Mar 2007 15:15:58 +0000 http://blog.anthonychaves.net/java/2007/03/12/howd-this-string-get-into-my-list#comment-618 Did you have to ignore compile warnings to see this problem? Did you have to ignore compile warnings to see this problem?

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