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type conversion

 
sandeep dhingra
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can some one plz help me
look at this
byte b=2;
b += 10; //1
b = b+10; //2

1. works fine but 2. does not.

i know that we have to explicitly narrow the conversion in 2. by adding byte on RHS but but how come 1. works as both are one and the same thing.
 
Kudret Serin
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Android Eclipse IDE Ubuntu
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hi sandeep,

byte b=2;
b += 10; //1
b = b+10; //2

1 and 2 are not same thing.
1 is identical to b=(byte) b+10; works fine.
2 does not compile because b is converted to int (due to + operator) and after adding 10, the result(int) can not be assigned to byte value.
 
srikanth reddy
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hi Areca ...
b=(byte)b+10;wont work ...will give loss of precision ...i think u mean to say b=(byte)(b+10)..this will work fine .....

thanks & regards

srikanth
 
Kudret Serin
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Android Eclipse IDE Ubuntu
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ha, i meaned b=(byte)(b+10) you are right.
Thanks
 
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