Garbage Collection – OCPJP 6

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3) Which of the following statements are true about the following program? The button object ‘button’ will become a candidate for garbage collection as soon the execution of Line A ends since the object is not used elsewhere. The newly created StringBuilder object as a result of method call in Line C becomes eligible for […]

NavigableMap – OCPJP 6

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NavigableMap is similar to NavigableSet. In NavigableMap we will use key value pairs to reterive the value. see the following code: Look into the following code snippet: In tha bove code NavigableMap API is used for reteriving the less than and greater than value based on key. The output would be like this: 2) What will be the output of the […]

NavigableSet – OCPJP 6

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NavigableSet API is included in the ocpjp 6 certification exam. This article explains few important methods with simple example program.NavigableSet is the subinterface of SortedSet. This interface defines methods for finding the element in a list. For example lower() method used for finding the element which is less than the given value. Look into the following example: In the […]

OCPJP 6 / SCJP 1.6 Syllabus

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Section 1: Declarations, Initialization and Scoping Develop code that declares classes (including abstract and all forms of nested classes), interfaces, and enums, and includes the appropriate use of package and import statements (including static imports). Develop code that declares an interface. Develop code that implements or extends one or more interfaces. Develop code that declares […]

OCMJEA Mock Exam -1

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1 . Which of the following are true about Active Replication? It is a fault-tolerance mechanism It is achieved by taking cold back ups Each replica attempts to process each request but extra calls may be intercepted via an interceptor State changes are logged and periodically flushed to the replicas State is synchronized only when […]

OCPJP 6 Exam

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The Oracle Certified Professional for Java Platform, Standard Edition 6 certification exam is for programmers experienced using the Java programming language. Achieving this certification provides clear evidence that a programmer understands the basic syntax and structure of the Java programming language and can create Java technology applications that run on server and desktop systems using […]

OCPJP 6 Mock Exam – 21

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1 . Given: Which two construct an anonymous inner class? Choose the two below: AnAdapter1 aa = new AnAdapter1 () {} AnAdapter0 aa = new AnAdapter0 () {} AnAdapter0 aa = new AnAdapter0 (5) {} AnAdapter1 aa = new AnAdapter1 (5) {} AnInterface ai = new Anlnterface (5)) { 2 . What will be the […]

OCPJP 6 Mock Exam – 20

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1 . Which of the following are valid array construction? int a[] = new int[]; int a[] = new int[10]; int a[10] = new int[]; int a[] = new a[10]; 2 . Which of the following are valid array initialization? new int[] = {1,2,3,4}; new int[10] = {1,2,3,4}; new int[] = 1,2,3,4; new int[] = […]

OCPJP 6 Mock Exam -19

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1 . What will be the output? Choose the one below: 10 0 Nothing is printed Compiler error 2 . which of the following modifiers are applied to the nested classes class? private protected public static All the above 3 . which of the following modifiers are applied to the top level classes? static private […]

OCPJP 6 Mock Exam -18

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1 . What will be the output? Choose the one below: Base(){} Base(long l){} Base(float f){} It will compile properly 2 . What will be the output? Choose the one below: 2 4 Compiler Error It will compile if we add super(2) in Test2() 3 . which of the following keywords can be applied to […]