Topics

• Collections
• Lambda Expressions
• Maps
• Concurrent Programming (Threads)
• BigInteger
• Comparable and Comparator
• The Classpath
• XML Parsing using the JAXP APIs
• Java Pitfalls - Performance Issues
• Concurrent Collections

Examples

• Using Lambda Expressions to Sort a Collection
• Removing items from a List within a loop
• Introduction to Java lambdas
• Check if key exists
• BigInteger Mathematical Operations Examples
• Concurrent Collections
• Sorting a List using Comparable<T> or a Comparator<T>
• Parsing and navigating a document using the DOM API
• Parsing a document using the StAX API
• Load a resource from the classpath
• Sorting Map entries
• Pitfall - String concatenation in a loop does not scale
• Pitfall - Iterating a Map's keys can be inefficient
• Pitfall - Using size() to test if a collection is empty is inefficient.