310-025 Sun - Braindumps.com.ua: question list for "Sun Certified Java Programmer", page: 7

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Sun 310-025: Sun Certified Java Programmer

#61. Which two statements are true? (Choose Two)

#62. Exhibit:

 1. public class Mycircle { 
 2. public double radius; 
 3. public double diameter; 
 4. 
 5. public void setRadius(double radius) 
 6. this.radius = radius; 
 7. this.diameter= radius * 2; 
 8. } 
 9. 
 10. public double getRadius() { 
 11. return radius; 
 12. } 
 13. }

Which statement is true?

#63. You want to limit access to a method of a public class to members of the same class. Which access modifier accomplishes this objective?

#64. Exhibit: ClassOne.java

 1. package com.abc.pkg1; 
 2. public class ClassOne { 
 3. private char var = ‘a’; 
 4. char getVar() {return var;} 
 5. } 
 ClassTest.java 
 1. package com.abc.pkg2; 
 2. import com.abc.pkg1.ClassOne; 
 3. public class ClassTest extends ClassOne { 
 4. public static void main(String[]args) { 
 5. char a = new ClassOne().getVar(); 
 6. char b = new ClassTest().getVar(); 
 7. } 
 8. }

What is the result?

#65. Given:

 1. public class ArrayTest { 
 2. public static void main (String[]args) { 
 3. float f1[], f2[]; 
 4. f1 = new float [10]; 
 5. f2 = f1; 
 6. System.out.printIn (“f2[0]=” + f2[0]); 
 7. } 
 8.}

What is the result?

#66. Which two statements are true regarding the creation of a default constructor? (Choose Two)

#67. Exhibit:

 1. class super { 
 2. public int getLength() {return 4;} 
 3. } 
 4. 
 5. public class Sub extends Super { 
 6. public long getLength() {return 5;} 
 7. 
 8. public static void main (String[]args) { 
 9. super sooper = new Super (); 
 10. Sub sub = new Sub(); 
 11. System.out.printIn( 
 12. sooper.getLength()+ “,” + sub.getLength() }; 
 13. } 
 14. }

What is the output?

#68. Exhibit

 1. public class SyncTest{ 
 2. public static void main(String[] args) { 
 3. final StringBuffer s1= new StringBuffer(); 
 4. final StringBuffer s2= new StringBuffer(); 
 5. new Thread () { 
 6. public void run() { 
 7. synchronized(s1) { 
 8. s2.append(“A”); 
 9. synchronized(s2) { 
 10. s2.append(“B”); 
 11. System.out.print(s1); 
 12. System.out.print(s2); 
 13. } 
 14. } 
 15. } 
 16. }.start(); 
 17. new Thread() { 
 18. public void run() { 
 19. synchronized(s2) { 
 20. s2.append(“C”); 
 21. synchronized(s1) { 
 22. s1.append(“D”); 
 23. System.out.print(s2); 
 24. System.out.print(s1); 
 25. } 
 26. } 
 27. } 
 28. }.start(); 
 29. } 
 30. }

Which two statements are true? (Choose Two)

#69. Which method in the Thread class is used to create and launch a new thread of execution?

#70. Which code determines the int value foo closest to, but not greater than, a double value bar?

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Server date 05:53 10-01-2009

Sun 310-025

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