Chapter 4. Concurrency

Chapter 4. Concurrency
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Write code to define, instantiate, and start new threads using both `java.lang.Thread` and `java.lang.Runnable`.

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Write code that uses standard J2SE APIs in the java.util and java.util.regex packages to format or parse strings or streams. For strings, write code that uses the Pattern and Matcher classes and the String.split(...) method. Recognize and use regular expression patterns for matching (limited to: . (dot), * (star), + (plus), ?, \d, \s, \w, [], ()). The use of *, +, and ? will be limited to greedy quantifiers, and the parenthesis operator will only be used as a grouping mechanism, not for capturing content during matching. For streams, write code using the Formatter and Scanner classes and the PrintWriter.format/printf methods. Recognize and use formatting parameters (limited to: %b, %c, %d, %f, %s) in format strings.	Home	Recognize the states in which a thread can exist, and identify ways in which a thread can transition from one state to another.