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Teach Yourself Java in 21 Days, Eighth Edition

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Day 7: Threads and Exceptions

Notes and Corrections

• Certification Practice quiz solution.
• Page 192: There's a typo in two code examples on this page. The two statements that create NotInServiceException exceptions should begin with NotInServiceException, not NotInServiceException().

Source Files

• HexRead.class
• HexRead.java
• NegativeNumberException.class
• NewPrimeFinder.class
• NewPrimeFinder.java
• NewPrimeThreads.class
• NewPrimeThreads.java
• PrimeFinder.class
• PrimeFinder.java
• PrimeThreads.class
• PrimeThreads.java

Reader Questions

• None.

Activities

• Solution 1: NewPrimeFinder.java, NewPrimeFinder.class, and NegativeNumberException.class.
• Solution 2: NewPrimeThreads.java and NewPrimeThreads.class.