Testing objectives for SCJP

答案：Testing Objectives
Testing objectives for the Programmer for Java 2 Platform include:

DECLARATIONS AND ACCESS CONTROL
  Write code that declares, constructs, and initializes arrays of any base type using any of the permitted forms
both for declaration and for initialization
  Declare classes, inner classes, methods, instance variables, static variables, and automatic (method local)
variables 易做图 appropriate use of all permitted modifiers (such as public, final, static, abstract,
and so forth)
  State the significance of each of these modifiers both singly and in combination, and state the effect of
package relationships on declared items qualified by these modifiers
  For a given class, determine if a default constructor will be created, and if so, state the prototype of
that constructor
  State the legal return types for any method given the declarations of all related methods in this or parent
classes

FLOW CONTROL AND EXCEPTION HANDLING
  Write code using if and switch statements and identify legal argument types for these statements
  Write code using all forms of loops including labeled and unlabeled use of break and continue, and state the
values taken by loop control variables during and after loop execution
  Write code that makes proper use of exceptions and exception handling clauses (try, catch, finally) and
declares methods and overriding methods that throw exceptions
GARBAGE COLLECTION
  State the behavior that is guaranteed by the garbage collection system, and write code that explicitly makes
objects eligible for collection

LANGUAGE FUNDAMENTALS
  Identify correctly constructed source files, package declarations, import statements, class declarations (of all
forms including inner classes), inte易做图ce declarations and implementations (for java.lang.Runnable or other
inte易做图ce described in the test), method declarations (including the main method that is used to start
execution of a class), variable declarations and identifiers
  State the correspondence between index values in the argument array passed to a main method and
command line arguments
  Identify all Java programming language keywords and correctly constructed identifiers
  State the effect of using a variable or array element of any kind when no explicit assignment has been
made to it
  State the range of all primitive data types and declare literal values for String and all primitive types using
all permitted formats, bases, and representations

OPERATORS AND ASSIGNMENTS
  Determine the result of applying any operator, including assignment operators, instance of, and casts to
operands of any type, class, scope, or accessibility, or any combination of these
  Determine the result of applying the boolean equals (Object) method to objects of any combination of the
classes java.lang.String, java.lang.Boolean, and java.lang.Object
  In an expression involving the operators &, |, &&, ||, and variables of known values, state which operands
are evaluated and the value of the expression
  Determine the effect upon objects and primitive values of passing variables into methods and performing
assignments or other modifying operations in that method

OVERLOADING, OVERRIDING, RUNTIME TYPE, AND OBJECT ORIENTATION
  State the benefits of encapsulation in object oriented design and write code that implements tightly
encapsulated classes and the relationships "is a" and "has a"
  Write code to invoke overridden or overloaded methods and parental or overloaded constructors, and
describe the effect of invoking these methods
  Write code to construct instances of any concrete class including normal top level classes, inner classes,
static inner classes, and anonymous inner classes

THREADS
  Write code to define, instantiate, and start new threads using both java.lang.Thread and java.lang.Runnable
  Recognize conditions that might prevent a thread from executing
  Write code using synchronized, wait, notify, or notifyAll, to protect against concurrent access problems and
to communicate between threads.
  Define the interaction between threads and between threads and object locks when executing synchronized,
wait, notify, or notifyAll

THE JAVA.AWT PACKAGE
  Write code using component, container, and LayoutManager classes of the java.awt package to present a
Graphical User Inte易做图ce with specified appearance and resize behavior, and distinguish the responsibilities
of layout managers from those of containers
  Write code to implement listener classes and methods, and in listener methods, extract information from
the event to determine the affected component, mouse position, nature, and time of the event
  State the event classname for any specified event listener inte易做图ce in the java.awt.event package

THE JAVA.LANG PACKAGE
  Write code using the following methods of the java.lang.Math class: abs, ceil, floor, max, min, random,
round, sin, cos, tan, and sqrt
  Describe the significance of the immutability of string objects

THE JAVA.UTIL PACKAGE
  Make appropriate selection of collection classes/inte易做图ces to suit specified behavior requirements

THE JAVA.IO PACKAGE
  Write code that uses objects of the file class to navigate a file system
  Write code that uses objects of the classes InputStreamReader and outputStreamWriter to translate
between Unicode and either platform default or ISO 8859-1 character encoding and Distinguish between
conditions under which platform default encoding conversion should be used and conditions under which a
specific conversion should be used
  Select valid constructor arguments for FilterInputStream and FilterOutputStream subclasses from a list of
classes in the java.io.package
  Write appropriate code to read, write and update files using FileInputStream, FileOutputStream, and
RandomAccessFile objects
  Describe the permanent effects on the file system of constructing and using FileInputStream,
FileOutputStream, and RandomAccessFile objects

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