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Download Complete Java 2 certification: study guide by Philip Heller PDF

By Philip Heller

Here's a revised and improved version of the main respected Java certification advisor, with in-depth assurance of the newest types of the Java Programmer and Developer assessments. Written by way of the folks who really created the checks for solar, this insider's advisor will organize you to take those scorching tests with self belief. Sybex learn courses are filled with remarkable examine tools--hundreds of demanding evaluate questions and digital flashcards that support strengthen key themes, and real-world eventualities that supply views and insights from pro pros. The CD contains a sophisticated checking out engine with hundreds and hundreds of pattern examination questions and the complete e-book in PDF.

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Suppose a source file contains a large number of import statements. How do the imports affect the time required to compile the source file? A. Compilation takes no additional time. B. Compilation takes slightly more time. C. Compilation takes significantly more time. 12. Suppose a source file contains a large number of import statements and one class definition. How do the imports affect the time required to load the class? A. Class loading takes no additional time. B. Class loading takes slightly more time.

If (d >= 0) { 4. sqrt(d)); 5. } 6. return result; 7. } Here the result is initialized on line 4, but the initialization takes place within the curly braces of lines 3 and 5. ” A common solution is to initialize result to some reasonable default as soon as it is declared: 1. public double fourthRoot(double d) { 2. 0; // Initialize 3. if (d >= 0) { 4. sqrt(d)); 5. } 6. return result; 7. } Now result is satisfactorily initialized. Line 2 demonstrates that an automatic variable may be initialized in its declaration line.

1 C. 100 D. 101 7. Consider the following application: 1. 2. 3. 4. 5. 6. 7. 8. 9. 10. 11. 12. 13. 14. 0; } } Review Questions 31 What value is printed out at line 6? A. 0 B. 0 C. 3 D. 3 8. How can you force garbage collection of an object? A. Garbage collection cannot be forced. B. gc(). C. gc(), passing in a reference to the object to be garbage-collected. D. gc(). E. Set all references to the object to new values (null, for example). 9. What is the range of values that can be assigned to a variable of type short?

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