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Reversim Summit 2016 - Ja-WAT

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Allon Mureinik
Allon Mureinik

Java prides itself in not allowing you to shoot yourself in the foot, but doesn't always live up to the hype. Recent editions have introduced powerful new syntactic tools which make development much easier, but can often result in "WAT" moments. This lightening talk (given in Reversim Summit 2016), inspired by Gary Bernhardt's famous WAT talk will showcase some of the cases where Java has left me scratching my head and asking "WAT?".

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Ja-WAT?! Reversim Summit 2016 Allon Mureinik Associate Manager, RHV Storage R&D https://www.linkedin.com/in/mureinik 20/09/2016
2 Remember WAT? Great talk by Gary Bernhardt about how broken some languages are https://www.destroyallsoftware.com/talks/wat
3 Remember WAT? But we don’t have such problems in Java. Or do we?
4 We can put strings in lists
5 … and run it $ java FunWithLists_Strings [Reversim, Summit, 2016] $ java FunWithLists_Strings [Reversim, Summit, 2016]
6 We can remove strings from lists
7 … and run it $ java FunWithLists_Strings [Reversim, 2016] $ java FunWithLists_Strings [Reversim, 2016]
8 We can put chars in lists
9 … and run it $ java FunWithLists_Chars [R, S, 2] $ java FunWithLists_Chars [R, S, 2]
10 We can remove chars from lists
11 … and run it $ java FunWithLists_Chars Exception in thread "main" java.lang.IndexOutOfBoundsException: Index: 83, Size: 3 at java.util.ArrayList.rangeCheck(ArrayList.java:653) at java.util.ArrayList.remove(ArrayList.java:492) at FunWithLists_Chars.main(FunWithLists_Chars.java:11) $ java FunWithLists_Chars Exception in thread "main" java.lang.IndexOutOfBoundsException: Index: 83, Size: 3 at java.util.ArrayList.rangeCheck(ArrayList.java:653) at java.util.ArrayList.remove(ArrayList.java:492) at FunWithLists_Chars.main(FunWithLists_Chars.java:11)
12 WAT
13 We can concat strings
14 … and run it $ java FunWithString Reversim16 $ java FunWithString Reversim16
15 We can concat strings with chars
16 … and run it $ java FunWithString Reversim16 $ java FunWithString Reversim16
17 We can concat chars with strings
18 … and run it $ java FunWithString 103Reversim $ java FunWithString 103Reversim
19 WAT
THANK YOU https://github.com/mureinik/ja-wat

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