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Q41. Given:
And the commands:
Javac Jump.java
Java Jump crazy elephant is always
What is the result?
A. Lazy lion is jumping
B. Lion is always jumping
C. Crazy elephant is jumping
D. Elephant is always jumping
E. Compilation fails
Answer: B
Q42. Given the code fragment:
public class ForTest {
public static void main(String[] args) {
int[] array = {1, 2, 3};
for ( foo ) {
}
}
Which three code fragments, when replaced individually for foo, enables the program to compile?
A. int i : array
B. int i = 0; i < 1;
C. ; ;
D. ; i < 1; i++
E. i = 0; i<1;
Answer: A,B,C
Q43. Given the code fragment:
int b = 3;
if ( !(b > 3)) {
System.out.println("square ");
}{
System.out.println("circle ");
}
System.out.println("...");
What is the result?
A. square...
B. circle...
C. squarecircle...
D. Compilation fails.
Answer: C
Q44. Given the fragment:
String[][] arra = new String[3][];
arra[0] = new String[]{"rose", "lily"};
arra[1] = new String[]{"apple", "berry","cherry","grapes"};
arra[0] = new String[]{"beans", "carrot","potato"};
// insert code fragment here
Which code fragment when inserted at line '// insert code fragment here', enables the code to successfully change arra elements to uppercase?
A. String[][] arra = new String[3][];
arra[0] = new String[]{"rose", "lily"};
arra[1] = new String[]{"apple", "berry","cherry","grapes"};
arra[0] = new String[]{"beans", "carrot","potato"};
for (int i = 0; i < arra.length; i++) {
for (int j=0; j < arra[i].length; j++) {
arra[i][j] = arra[i][j].toUpperCase();
}
}
B. for (int i = 0; i < 3; i++) {
for (int j=0; j < 4; j++) {
arra[i][j] = arra[i][j].toUpperCase();
}
}
C. for (String a[]:arra[][]) {
for (String x:a[]) {
D. toUpperCase();
}
}
E. for (int i:arra.length) {
for (String x:arra) {
arra[i].toUpperCase();
}
}
Answer: C
Explanation:
Incorrect:
not A: arra.length is 3, but the subarrays have 2, 3 and 4 elements. Index will be out of
bound.
not B: The subarrys are of different lengths. Index will be out of bound.
not D: Compile error.
Q45. 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: C
Q46. Given the code fragment:
Which modification enables the code fragment to print TrueDone?
A. Replace line 5 With String result = "true"; Replace line 7 with case "true":
B. Replace line 5 with boolean opt = l; Replace line 7 with case 1=
C. At line 9, remove the break statement.
D. Remove the default section.
Answer: A
Q47. Given the code fragment:
for (int ii = 0; ii < 3;ii++) {
int count = 0;
for (int jj = 3; jj > 0; jj--) {
if (ii == jj) {
++count;
break;
}
}
System.out.print(count); continue; }
What is the result?
A. 011
B. 012
C. 123
D. 000
Answer: A
Q48. Given:
Which is true?
A. Sum for 0 to 0 = 55
B. Sum for 0 to 10 = 55
C. Compilation fails due to error on line 6.
D. Compilation fails due to error on line 7.
E. An Exception is thrown at the runtime.
Answer: D
Explanation:
Loop variables scope limited to that enclosing loop. So in this case, the scope of the loop variable x declared at line 5, limited to that for loop. Trying to access that variable at line 7, which is out of scope of the variable x, causes a compile time error. So compilation fails
due to error at line 7. Hence option D is correct.
Options A and B are incorrect, since code fails to compile.
Reference: httpsy/docs.oracle.com/javase/tutorial/java/nutsandbolts/variables.html
Q49. Given:
What is the result?
A. True false
B. True null
C. Compilation fails
D. A NullPointerException is thrown at runtime
Answer: A
Q50. Given the following array:
Which two code fragments, independently, print each element in this array?
A. Option A
B. Option B
C. Option C
D. Option D
E. Option E
F. Option F
Answer: B,E
Explanation: All the remaining options have syntax errors
