SUN CERTIFIED PROGRAMMER FOR THE JAVA 2 PLATFORM

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 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 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, ASSERTIONS 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

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 makes proper use of assertions, and distinguish appropriate from inappropriate uses of assertions.

Identify correct statements about the assertion mechanism.

GARBAGE COLLECTION

State the behavior that is guaranteed by the garbage collection system

write code that explicitly makes objects eligible for collection

Recognize the point in a piece of source code at which an object becomes eligible for garbage collection

LANGUAGE FUNDAMENTALS

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

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 ,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.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

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.)

THE COLLECTIONS FRAMEWORK

Make appropriate selection of collection classes/interfaces to suit specified behavior requirements

Distinguish between correct and incorrect implementations of hashcode methods