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How I studied for the Sun Certified Java Programmer [SCJP] 6 Exam
Including an inline review of two SCJP study guides. Disclaimer: This is not a guide to passing the test with zero experience and no preparation. The SCJP exam will quickly expose lack of working knowledge. I have roughly 15 years of experience with programming in C and derivative languages, including about 1 year of Java…
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Boxing of an Integer and conservation of space in Java
Apparently, boxing of an int literal initialization into an Integer class will result in two different objects being assigned the same space in memory if the number is 127 or smaller, but different spaces in memory if the number is 128 or larger. Take BoxTest.java: public class BoxTest { public static void main(String [] args)…