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Why Java does not use default value which it should?
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JavaFAQ Home » General Java
It looks that Java does not follow its own standards!
Why do I get compile error in my function when do this:
| Code: |
public byte[] getBytes(){
byte[] bytes;
return bytes;
}
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JLS (Java Language Specifation) says: "For all reference types (§4.3), the default value is null." JLS
Why can not I simply get null by return statement?
If you read more carefully the same paragraph you can find this: "A local variable (§14.4, §14.13) must be explicitly given a value before it is used"
So if you declare (even without initialization) the same variable on a class level, outside of function it will be Ok!
Look here - it works:
| Code: |
public class MyClass{
byte[] bytes;
.......
public byte[] getBytes(){
return bytes;
}
}
|
No compile error...
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