Section 2: Flow Control in Java

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APPENDIX C
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Develop code that declares, initializes, and uses primitives, arrays, enums, and objects as static, instance, and local variables Also, use legal identifiers for variable names
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For primitive types, see Section 22, p 28 For arrays, see Section 36, p 69 For enums, see Section 35, p 54 For initialization of static, instance, and local variables, see Section 23, p 31 For initializers, see Section 97, p 406
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Develop code that declares both static and non-static methods and, if appropriate, use method names that adhere to the JavaBeans naming standards Also develop code that declares and uses a variable-length argument list
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For methods, see Section 33, p 44 For JavaBeans naming standard, see Section 32, p 41 For varargs, see Section 38, p 90
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Given a code example, determine if a method is correctly overriding or overloading another method, and identify legal return values (including covariant returns), for the method
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For overloading methods, see Section 33, p 47 For overloaded method resolution, see Section 710, p 324 For overriding methods, see Section 72, p 288 For return values, see Section 64, p 228 For covariant return, see Section 72, p 290
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Given a set of classes and superclasses, develop constructors for one or more of the classes Given a class declaration, determine if a default constructor will be created and, if so, determine the behavior of that constructor Given a nested or non-nested class listing, write code to instantiate the class
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For constructors, see Section 34, p 48 For default constructors, see Section 34, p 49 For constructor chaining, see Section 75, p 302, and Section 911, p 416 For instantiating nested classes, see 8, p 351
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Section 2: Flow Control
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For control flow, see 6, p 203
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21 22
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Develop code that implements an if or switch statement; and identify legal argument types for these statements Develop code that implements all forms of loops and iterators, including the use of
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for, the enhanced for loop (for-each), do, while, labels, break, and continue; and
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explain the values taken by loop counter variables during and after loop execution
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APPENDIX C
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23 24
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Develop code that makes use of assertions, and distinguish appropriate from inappropriate uses of assertions Develop code that makes use of exceptions and exception handling clauses (try, catch, finally), and declares methods and overriding methods that throw exceptions Recognize situations that will result in any of the following being thrown: ArrayIndexOutOfBoundsException, ClassCastException, IllegalArgumentException, IllegalStateException, NullPointerException, NumberFormatException, AssertionError, ExceptionInInitializerError, StackOverflowError or NoClassDefFoundError Understand which of these are thrown by the virtual machine and recognize situations in which others should be thrown programmatically
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Section 3: API Contents
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31 Develop code that uses the primitive wrapper classes (such as Boolean, Character, Double, Integer, and so on), and/or autoboxing & unboxing Discuss the differences between the String, StringBuilder, and StringBuffer classes
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For boxing and unboxing, see Section 51, p 162 For primitive wrapper classes and string handling classes, see 10, p 423
Given a scenario involving navigating file systems, reading from files, writing to files, or interacting with the user, develop the correct solution using the following classes (sometimes in combination), from javaio: BufferedReader, BufferedWriter, File, FileReader, FileWriter, PrintWriter, and Console
For file I/O, see 11, p 467
Develop code that serializes and/or de-serializes objects using the following APIs from javaio: DataInputStream, DataOutputStream, FileInputStream, FileOutputStream, ObjectInputStream, ObjectOutputStream and Serializable
For object serialization, see Section 116, p 510
Use standard J2SE APIs in the javatext package to correctly format or parse dates, numbers, and currency values for a specific locale; and, given a scenario, determine the appropriate methods to use if you want to use the default locale or a specific locale Describe the purpose and use of the javautilLocale class
For using locales, and formatting dates, numbers, and concurrency values, see 12, p 531
Write code that uses standard J2SE APIs in the javautil and javautilregex packages to format or parse strings or streams For strings, write code that uses the Pattern and Matcher classes and the Stringsplit 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