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310-025 |
| Active |
| 120 min. |
| 85 min. |
| 61% |
| 59 |
| Form-based |
| 3 |
| CJP |
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| Exam
Objectives |
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| Section 1:
Declarations and Access Control
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- 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 making 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.
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| Section 2: Flow
Control and Exception Handling
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- 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.
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| Section 3: Garbage
Collection
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- State the behavior that is guaranteed by the
garbage collection system, and write code that explicitly
makes objects eligible for collection.
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| Section 4:
Language Fundamentals
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- Identify correctly constructed source files,
package declarations, import statements, class declarations
(of all forms including inner classes), interface declarations
and implementations (for java.lang.Runnable or other interface
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.
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| Section 5:
Operators and Assignments
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- 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.
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| Section 6:
Overloading, Overriding, Runtime Type, and Object
Orientation
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- 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.
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| Section 7:
Threads
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- 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.
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| Section 8: The
java.awt Package
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- Write code using component, container, and
LayoutManager classes of the java.awt package to present a
Graphical User Interface 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 interface in the java.awt.event package.
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| Section 9: The
java.lang Package
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- 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.
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| Section 10: The
java.util Package
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- Make appropriate selection of collection
classes/interfaces to suit specified behavior requirements.
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| Section 11: The
java.io Package
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- 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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