310-056 Sun - Braindumps.com.ua: question list for "Sun Certified Programmer for J2SE 5.0 Upgrade Exam", page: 11

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Sun 310-056: Sun Certified Programmer for J2SE 5.0 Upgrade Exam

#101. Given:

 1. public class Base { 
 2. public static final String FOO = “foo”; 
 3. public static void main(String[] args) { 
 4. Base b = new Base(); 
 5. Sub s = new Sub(); 
 6. System.out.print(Base.FOO); 
 7. System.out.print(Sub.FOO); 
 8. Systemout.print(b.FOO); 
 9. System.out.print(s.FOO); 
 10. System.out.print(((Base)s).FOO); 
 11. } }  
 12. class Sub extends Base {public static final String FOO=”bar”;}

What is the result?

#102. Given:

 1. package geometry; 
 2. public class Hypotenuse { 
 3. public lnnerTriangle it = new lnnerTriangle(); 
 4. class lnnerTriangle { 
 5. public mt base; 
 6. public mt height

Which statement is true about the class of an object that can reference the variable base?

#103. Which three statements are true? (Choose three.)

#104. Given:

 11. class ClassA {} 
 12. class ClassB extends ClassA (} 
 13. class ClassC extends ClassA {)

and:

 21. ClassA p0 = new ClassA(); 
 22. ClassB p1 = new ClassB(); 
 23. ClassC p2 = new ClassC(); 
 24. ClassA p3 = new ClassB(); 
 25. ClassA p4 = new ClassC();

Which three are valid? (Choose three.)

#105. Given:

 10: public class Hello { 
 11: String title; 
 12: int value; 
 13: public Hello() { 
 14: title += “ World”; 
 15: } 
 16: public Hello(int value) { 
 17: this.value = value; 
 18: title = “Hello”; 
 19: Hello(); 
 20: } 
 21: }

and:

 30: Hello c = new Hello(5); 
 31: System .out.println(c.title);

What is the result?

#106. Given:

 1. public class Target { 
 2. private int i = 0; 
 3. public int addOne(){ 
 4. return ++i; 
 5 . } 
 6. }

And:

 1. public class Client { 
 2. public static void main(String[] args){ 
 3. System.out.println(new Target().addone()); 
 4. } 
 5. }

Which change can you make to Target without affecting Client?

#107. Given:

 11. class Animal  
 { public String noise() { return “peep”; } } 
 12. class Dog extends Animal { 
 13. public String noise() { return “bark”; } 
 14. } 
 15. class Cat extends Animal { 
 16. public String noise() { return “meow”; } 
 17. } 
 … 
 30. Animal animal = new Dog(); 
 31. Cat cat = (Cat)animal; 
 32. System.out.println(cat.noise());

What is the result?

#108. Given:

 11. public class Bootchy { 
 12. int bootch; 
 13. String snootch; 
 14. 
 15. public Bootchy() { 
 16. this(”snootchy”); 
 17. System.out.print(“first “); 
 18. } 
 19. 
 20. public Bootchy(String snootch) { 
 21. this(420, “snootchy”); 
 22. System.out.print(”second “); 
 23. } 
 24. 
 25. public Bootchy(int botch, String snootch) { 
 26. this.bootch = bootch; 
 27. this.snootch = snootch; 
 28. System.out .print(”third “); 
 29. } 
 30. 
 31. public static void raain(String[] args) 
 { 
 32. Bootchy b = new Bootchy(); 
 33. System.out.print(b.snootch + “ “ +b.bootch); 
 34. } 
 35. }

What is the result?

#109. A programmer needs to create a logging method that can accept an arbitrary number of arguments. For example, it may be called in these ways:
loglt(”Iog message1 “);
loglt(”Iog message2”,log message3”);
Ioglt(”log message4”,”log message5”,”log message6”);
Which declaration satisfies this requirement?

#110. Given:

 1. interlace TestA { String toString(); } 
 2. public class Test { 
 3. public static void main(String[] args) { 
 4. System.out.println(new TestA() { 
 5. public String toString() { return “test”; } 
 6. }); 
 7. } 
 8. }

What is the result?

[1] ... [11] [12]

gen. 0.294

Server date 06:05 10-01-2009

Sun 310-056

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