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Q31. What is result? 

A. Successful 

B. Unsuccessful 

C. Compilation fails 

D. An exception is thrown at runtime 

Answer:


Q32. Given: 

What is the result? 

A. Compilation fails 

B. The code compiles, but does not execute. 

C. Paildrome 

D. Wow 

E. Mom 

Answer:


Q33. Given: 

public class MainMethod { 

void main() { 

System.out.println("one"); 

static void main(String args) { 

System.out.println("two"); 

public static void main(String[] args) { 

System.out.println("three"); 

void mina(Object[] args) { 

System.out.println("four"); 

What is printed out when the program is excuted? 

A. one 

B. two 

C. three 

D. four 

Answer:


Q34. What is the result? 

A. Initialized 

Started 

B. Initialized 

Started 

Initialized 

C. Compilation fails 

D. An exception is thrown at runtime 

Answer:


Q35. Given: 

What three modifications are necessary to ensure that the class is being properly encapsulated? 

This class is poorly encapsulated. You need to change the circle class to compute and return the area instead. 

A. Change the access modifier of the setradius () method to private 

B. Change the getArea () method public double getArea () { return area; } 

C. When the radius is set in the Circle constructor and the setRadius () method, recomputed the area and store it into the area field 

D. Change the getRadius () method: 

public double getRadius () { 

area = Math.PI * radius * radius; 

return radius; 

Answer: BCD 


Q36. Given the code fragment: 

String name = "Spot"; 

int age = 4; 

String str ="My dog " + name + " is " + age; 

System.out.println(str); 

And 

StringBuilder sb = new StringBuilder(); 

Using StringBuilder, which code fragment is the best potion to build and print the following 

string My dog Spot is 4 

A. sb.append("My dog " + name + " is " + age); System.out.println(sb); 

B. sb.insert("My dog ").append( name + " is " + age); System.out.println(sb); 

C. sb.insert("My dog ").insert( name ).insert(" is " ).insert(age); System.out.println(sb); 

D. sb.append("My dog ").append( name ).append(" is " ).append(age); 

System.out.println(sb); 

Answer: AD 


Q37. public class MyFor { 

public static void main(String[] args) { 

for (int ii = 0; ii < 4; ii++) { 

System.out.println("ii = "+ ii); 

ii = ii +1; 

What is the result? 

A. ii = 0 

ii = 2 

B. ii = 0 

ii = 1 

ii = 2 

ii = 3 

C. ii = 

D. Compilation fails. 

Answer:


Q38. Which two are Java Exception classes? 

A. SercurityException 

B. DuplicatePathException 

C. IllegalArgumentException 

D. TooManyArgumentsException 

Answer: AC 


Q39. The protected modifier on a Field declaration within a public class means that the field 

______________. 

A. Cannot be modified 

B. Can be read but not written from outside the class 

C. Can be read and written from this class and its subclasses only within the same 

package 

D. Can be read and written from this class and its subclasses defined in any package 

Answer:


Q40. What is the result when this program is executed? 

A. Bob's Name: Bob 

B. Bob's Name: Jian 

C. Nothing prints 

D. Bob’s name 

Answer: