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primarykey
Id
4687136
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0
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0
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2011-01-14T01:18:34.403
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2011-01-14T01:25:35.727
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2011-01-14T01:25:35.727
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547122
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2
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text
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Not being an expert on the Java VM, I'll still try to answer your question: <ol> <li>Your problem is actually not one that concerns the compiler - the compiler only turns your readable Java code into binary instructions. The problem of having uninitialized variables would occur at runtime, unless the compiler was "smart" enough to find circular dependencies in your code.</li> <li>None of your values are constants - they would have to be declared <code>final</code>, and you would not be able to set <code>anotherConstant</code> like that if you had it declared that way. They are both variables.</li> <li>At first, your class will be loaded into memory. So the basic memory layout of <code>SomeClass</code> will be known, and so will the functionality of <code>someMethod()</code>. If you had static variables declared, they would also be initialized now, but you couldn't call an instance method like <code>someMethod</code> to do so.</li> <li>When you instantiate an object of type <code>SomeClass</code>, all the member variables will be set first, so <code>someConstant</code> will no longer be unknown. Since the functionality of <code>someMethod</code> is also known, this should not be a problem. Were you referring to an undeclared variable at some point in <code>someMethod</code>, a <code>NullPointerException</code> would be thrown.</li> <li>Finally, the constructor is called. At this point, all the member variables are available, so it all will run smoothly. Again - were there any undeclared variables, a <code>NullPointerException</code> would be thrown. In your example, there should not be any, though.</li> </ol>
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1. POQuestion about class members in Java
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1. PTAnswer
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1. USweltraumpirat
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1. USweltraumpirat
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