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Inheritance vs. Composition in Java

Set vs. Set<?>

String is passed by “reference” in Java

HashMap vs. TreeMap vs. Hashtable vs. LinkedHashMap

ArrayList vs. LinkedList vs. Vector

HashSet vs. TreeSet vs. LinkedHashSet

10 minutes Perl tutorial for Java developer

Java vs. Python (2): Data Types

Swing vs. SWT – Side-by-side comparison

Java vs. Python (1): Simple Code Examples

Static Storage vs Heap vs Stack

Comparable vs. Comparator in Java

Syntactic vs. Semantic vs. Runtime Errors

Lucene vs. Database Search

FileOutputStream vs. FileWriter