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JavaBean Properties initialization

 
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When i use an istance of a javabean iit will be inizialized to default value based on their type, what are this values?

And, it' s right to initialize manually the variable in the javabean body to a default value?
 
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Default values are spelled out the language specification .. I may leave out a few, but here it goes:

boolean = false
numbers = 0
references = null
 
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