Topics

• Collections
• Strings
• Regular Expressions
• Recursion
• Common Java Pitfalls
• Process

Examples

• Comparing Strings
• StackOverflowError & recursion to loop
• Pitfall: memory leaks
• Pitfall: concurrent modification exceptions
• Pitfall: using == to compare strings
• Pitfall: testing a file before attempting to open it.
• Pitfall: Runtime.exec, Process and ProcessBuilder don't understand shell syntax
• Pitfall: thinking of variables as objects
• Matching a backslash