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자격증/OCJP_ExamB2018. 7. 8. 23:11QUESTION 1

QUESTION 1 A company that makes Computer Assisted Design (CAD) software has, within its application, some utility classes that are used to perform 3D rendering tasks. The company's chief scientist has just improved the performance of one of the utility classes' key rendering algorithms, and has assigned a programmer to replace the old algorithm with the new algorithm. When the programmer begins ..

자격증/OCJP_ExamA2018. 7. 8. 22:55QUESTION 59

QUESTION 59 Given: 11. //insert code here 12. private N min, max; 13. public N getMin() { return min; } 14. public N getMax() { return max; } 15. public void add(N added) { 16. if (min == null || added.doubleValue() max.doubleValue()) 19. max = added; 20. } 21. } Which two, inserted at line 11, will allow the code..

자격증/OCJP_ExamA2018. 7. 8. 21:56QUESTION 58

QUESTION 58 Given: import java.util.TreeSet; public class Explorer2 { public static void main(String[] args) { TreeSet s = new TreeSet(); TreeSet subs = new TreeSet(); for(int i = 606; i < 613; i++) if(i%2 == 0) s.add(i); subs = (TreeSet)s.subSet(608, true, 611, true); s.add(629); System.out.println(s + " " + subs); } } What is the result? A. Compilation fails. B. An exception is thrown at runti..

자격증/OCJP_ExamA2018. 7. 8. 21:38QUESTION 57

QUESTION 57 Given: class Foo { public int a = 3; public void addFive() { a += 5; System.out.print("f "); } }class Bar extends Foo { public int a = 8; public void addFive() { this.a += 5; System.out.print("b " ); } } Invoked with: Foo f = new Bar(); f.addFive(); System.out.println(f.a); What is the result? A. b 3 B. b 8 C. b 13 D. f 3 E. f 8 F. f 13 G. Compilation fails. H. An exception is thrown..

자격증/OCJP_ExamA2018. 7. 8. 21:26QUESTION 56

QUESTION 56 Which two classes correctly implement both the java.lang.Runnable and the java.lang. Cloneable interfaces? (Choose two.) A. public class Session implements Runnable, Cloneable { public void run(); public Object clone(); } B. public class Session extends Runnable, Cloneable { public void run() { /* do something */ } public Object clone() { /* make a copy */ } } C. public class Session..

자격증/OCJP_ExamA2018. 7. 8. 21:20QUESTION 55

QUESTION 55 Given: 6. public class Threads2 implements Runnable { 7. 8. public void run() { 9. System.out.println("run."); 10. throw new RuntimeException("Problem"); 11. } 12. public static void main(String[] args) { 13. Thread t = new Thread(new Threads2()); 14. t.start(); 15. System.out.println("End of method."); 16. } 17. } Which two can be results? (Choose two.) A. java.lang.RuntimeException..

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