I'm not a pro at Java, but I do know a thing or two.  This semester, I've been told two things by professors that are 
not true, but I can see how they could be misunderstood or just unknown.  So here they are, as of Java 1.5:
Java does not initialize integers to 0 automatically.Consider the following:
int foo;
System.out.println(foo);
Not only does this not print 0, it doesn't run.  Variable foo needs to be initialized by the programmer.
Java has a goto keyword, it is reserved, but it can not be used!Java does not let you use goto, although if you're using eclipse or netBeans, it will be highlighted as a keyword.
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