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Q71. Given the fragments:
Which line causes a compilation error?
A. Line n1
B. Line n2
C. Line n3
D. Line n4
Answer: A
Q72. Given the code fragment:
Boolean b1 = true;
Boolean b2 = false;
int i = 0;
while (foo) { }
Which one is valid as a replacement for foo?
A. b1.compareTo(b2)
B. i = 1
C. i == 2? -1 : 0
D. "foo".equals("bar")
Answer: D
Q73. Which two actions will improve the encapsulation of a class?
A. Changing the access modifier of a field from public to private
B. Removing the public modifier from a class declaration
C. Changing the return type of a method to void
D. Returning a copy of the contents of an array or ArrayList instead of a direct reference
Answer: AD
Q74. Given the code fragments:
What is the result?
A. Super
Sub
Sub
B. Contract
Contract
Super
C. Compilation fails at line n1
D. Compilation fails at line n2
Answer: D
Q75. Which two may precede the word ‘class’ in a class declaration?
A. local
B. public
C. static
D. volatile
E. synchronized
Answer: BC
Q76. for ( expr1 ; expr2 ; expr3 ) {
statement;
}
Which two statements are true?
A. This is not the only valid for loop construct; there exits another form of for loop
constructor.
B. The expression expr1 is optional. it initializes the loop and is evaluated once, as the loop
begin.
C. When expr2 evaluates to false, the loop terminates. It is evaluated only after each
iteration through the loop.
D. The expression expr3 must be present. It is evaluated after each iteration through the
loop.
Answer: BC
Q77. Given:
Given the for loop construct:
Which constructor initializes the variable x3?
A. Only the default constructor of class X
B. Only the no-argument constructor of class Y
C. Only the no-argument constructor of class Z
D. Only the default constructor of object class
Answer: C
Q78. boolean log3 = ( 5.0 != 6.0) && ( 4 != 5);
boolean log4 = (4 != 4) || (4 == 4);
System.out.println("log3:"+ log3 + nlog4" + log4);
What is the result?
A. log3:false log4:true
B. log3:true log4:true
C. log3:true log4:false
D. log3:false log4:false
Answer: B
Q79. Class StaticField {
static int i = 7;
public static void main(String[] args) {
StaticFied obj = new StaticField();
obj.i++;
StaticField.i++;
obj.i++;
System.out.println(StaticField.i + " "+ obj.i);
}
}
What is the result?
A. 10 10
B. 8 9
C. 9 8
D. 7 10
Answer: A
Q80. Given the following code fragment:
What is the result if the integer value is 33?
A. The fox jump lazy …
B. The fox lazy …
C. Quick fox over lazy …
D. Quick fox the ….
Answer: B
