My distinguished wall by Hu Go https://padlet.com/mavi1982/gfa9ps8gz3pp Made with the best of intentions en-us 2019-11-06 02:32:56 UTC 2025-09-24 22:39:46 UTC hello@padlet.com Casting mavi1982 https://padlet.com/mavi1982/gfa9ps8gz3pp/wish/409261728 Explicitly changes by user. ]]> 2019-11-11 00:50:20 UTC https://padlet.com/mavi1982/gfa9ps8gz3pp/wish/409261728 Casting mavi1982 https://padlet.com/mavi1982/gfa9ps8gz3pp/wish/409261816 implicitly mean automatically ]]> 2019-11-11 00:50:47 UTC https://padlet.com/mavi1982/gfa9ps8gz3pp/wish/409261816 casting mavi1982 https://padlet.com/mavi1982/gfa9ps8gz3pp/wish/412432592 Casting is converting one data type and storing into different data type.
For example 10 is and int and it can be stored in double variable. 

This called type widening.]]> 2019-11-17 21:19:38 UTC https://padlet.com/mavi1982/gfa9ps8gz3pp/wish/412432592 mavi1982 https://padlet.com/mavi1982/gfa9ps8gz3pp/wish/412432933 12.99 is a double and it can not be implicitly stored inside int variable.Because bigger data type can not be fit into smaller data type. We have to explicitly change the data type to make it fit.]]> 2019-11-17 21:21:52 UTC https://padlet.com/mavi1982/gfa9ps8gz3pp/wish/412432933 mavi1982 https://padlet.com/mavi1982/gfa9ps8gz3pp/wish/412433506 2019-11-17 21:25:06 UTC https://padlet.com/mavi1982/gfa9ps8gz3pp/wish/412433506 mavi1982 https://padlet.com/mavi1982/gfa9ps8gz3pp/wish/412442034 When you add space with string eventhough string hold a numerical value whole thing becomes a string. " "+lettterA becomes a1]]> 2019-11-17 22:16:31 UTC https://padlet.com/mavi1982/gfa9ps8gz3pp/wish/412442034 mavi1982 https://padlet.com/mavi1982/gfa9ps8gz3pp/wish/413096000 Dow-casting if opposite of casting]]> 2019-11-19 00:10:57 UTC https://padlet.com/mavi1982/gfa9ps8gz3pp/wish/413096000 mavi1982 https://padlet.com/mavi1982/gfa9ps8gz3pp/wish/413097039 You can't fit bigger data type to smaller one.]]> 2019-11-19 00:14:37 UTC https://padlet.com/mavi1982/gfa9ps8gz3pp/wish/413097039 mavi1982 https://padlet.com/mavi1982/gfa9ps8gz3pp/wish/413107347 2019-11-19 00:47:44 UTC https://padlet.com/mavi1982/gfa9ps8gz3pp/wish/413107347 mavi1982 https://padlet.com/mavi1982/gfa9ps8gz3pp/wish/413767386 All the variables must have initial value before they being used.
int num:
sout won't work

int num= 0;
works]]> 2019-11-20 01:39:00 UTC https://padlet.com/mavi1982/gfa9ps8gz3pp/wish/413767386 mavi1982 https://padlet.com/mavi1982/gfa9ps8gz3pp/wish/414404179 You can put byte short int char and string data type in a switch]]> 2019-11-21 00:56:54 UTC https://padlet.com/mavi1982/gfa9ps8gz3pp/wish/414404179 mavi1982 https://padlet.com/mavi1982/gfa9ps8gz3pp/wish/415687168 2019-11-23 17:49:53 UTC https://padlet.com/mavi1982/gfa9ps8gz3pp/wish/415687168 mavi1982 https://padlet.com/mavi1982/gfa9ps8gz3pp/wish/415708143 || checks first one if it's true won't check second whereas | check both regardless of first statement's state.]]> 2019-11-23 20:20:15 UTC https://padlet.com/mavi1982/gfa9ps8gz3pp/wish/415708143 Don't ever use = to check equality of strings. use .equals function. mavi1982 https://padlet.com/mavi1982/gfa9ps8gz3pp/wish/415725069 2019-11-23 22:33:03 UTC https://padlet.com/mavi1982/gfa9ps8gz3pp/wish/415725069 mavi1982 https://padlet.com/mavi1982/gfa9ps8gz3pp/wish/415849347 take out invalid conditions first in coding to make more efficient.]]> 2019-11-24 16:45:06 UTC https://padlet.com/mavi1982/gfa9ps8gz3pp/wish/415849347