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Section 1: Declarations and Access Control
Write code that declares, constructs and initializes arrays of any base type
using any of the permitted forms both for declaraand for initialization.
Declare classes, nested classes, methods, instance variables, static variables
and automatic (method local) variables making appropriate use of all permitted
modifiers (such as public, final, static, abstract, etc.). 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.
Write code that declares, constructs and initializes arrays of any base type
using any of the permitted forms both for declaraand for initialization.
Identify legal return types for any method given the declarations of all related
methods in this or parent classes.
Section 2: Flow control, Assertions, and Exception Handling
Write code using if and switch statements and identify legal argument types for
these statements
Write code that declares, constructs and initializes arrays of any base type
using any of the permitted forms both for declaraand for initialization.
Write code that makes proper use of exceptions and exception handling clauses
(try, catch, finally) and declares methods and overriding methods that throw
exceptions.
Recognize the effect of an exception arising at a specified point in a code
fragment. Note: The exception may be a runtime exception, a checked exception,
or an error (the code may include try, catch, or finally clauses in any
legitimate combination).
Write code that declares, constructs and initializes arrays of any base type
using any of the permitted forms both for declaraand for initialization.
Section 3: Garbage Collection
State the behavior that is guaranteed by the garbage collection system.
Write code that explicitly makes objects eligible for garbage collection.
Recognize the point in a piece of source code at which an object becomes
eligible for garbage collection.
Section 4: Language Fundamentals
Identify correctly constructed package declarations, import statements, class
declarations (of all forms including inner classes) interface declarations,
method declarations (including the main method that is used to start execution
of a class), variable declarations, and identifiers.
Identify classes that correctly implement an interface where that interface is
either java.lang.Runnable or a fully specified interface in the question
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. Note: There will not be any
questions regarding esoteric distinctions between keywords and manifest
constants.
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 formats, data types and declare literal values
for String and all primitive types using all permitted formats bases and
representations.
Section 5: Operators and Assignments
Determine the result of applying any operator (including assignment operators
and instance of) 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.
Section 6: 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 and nested classes
Section 7: 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 and notifyAll to protect against
concurrent access problems and to communicate between threads.
Define the interaction among threads and object locks when executing
synchronized wait, notify or notifyAll
Section 8: Fundamental Classes in 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, sqrt.
Describe the significance of the immutability of String objects.
Describe the significance of wrapper classes, including making appropriate
selections in the wrapper classes to suit specified behavior requirements,
stating the result of executing a fragment of code that includes an instance of
one of the wrapper classes, and writing code using the following methods of the
wrapper classes (e.g., Integer, Double, etc.):
doubleValue
floatValue
intValue
longValue
parseXxx
getXxx
toString
toHexString
Section 9: The Collections Framework
Make appropriate selection of collection classes/interfaces to suit specified
behavior requirements.
Distinguish between correct and incorrect implementations of hashcode methods.
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350 Mock Questions on SCJP 1.5 - JUST Rs.200 or 7 USD
Send us mail to sales@javabeat.net
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