Java Class Design Use access modifiers: private, protected, and public Override methods Overload constructors and methods Use the instanceof operator and casting Use virtual method invocation Override the hashCode, equals, and toString methods from the Object class to improve the functionality of your class. Use package and import statements Advanced Class Design Identify when and …
OCPJP
Finalize Method – OCPJP 6
2) What will be the output of the following program? The program will output ‘finalize’. It is unsure that the finalize() method will be called by the Garbage Collector. As soon the object reference ‘object’ is set to null, there is a possibility that the method ‘finalize()’ will be called. The program will cause compile-time …
Console API – OCPJP 6
5) What will be the output of the following program? The program will output ‘100.000000 – 100’. The program will output ‘100 – 100.000000’. The program will throw a IllegalFormatConversionException at run-time. The program will output ‘100 – 100’. Get more questions on Console Answer 5) b. Here the ordering of the arguments (anInt and …
NavigableMap – OCPJP 6
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
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 8 / OCPJP 7 Exam Details
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
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
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[] = …