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Q21. Given the following code for the classes MyException and Test:
What is the result?
A. A
B. B
C. Either A or B
D. A B
E. A compile time error occurs at line n1
Answer: B
Q22. Given:
package p1;
public class Test {
static double dvalue;
static Test ref;
public static void main(String[] args) {
System.out.println(ref);
System.out.println(dvalue);
}
}
What is the result?
A. p1.Test.class
0.0
B. <the summary address refrenced by ref> 0.000000
C. Null
0.0
D. Compilation fails
E. A NullPointerException is thrown at runtime
Answer: C
Q23. Given:
public class Natural {
private int i;
void disp() {
while (i <= 5) {
for (int i=1; i <=5;) {
System.out.print(i + " ");
i++;
}
i++;
}
}
public static void main(String[] args) {
new Natural().disp();
}
}
What is the result?
A. Prints 1 2 3 4 5 once
B. Prints 1 3 5 once
C. Prints 1 2 3 4 5 five times
D. Prints 1 2 3 4 5 six times
E. Compilation fails
Answer: D
Explanation: 1 2 3 4 5 1 2 3 4 5 1 2 3 4 5 1 2 3 4 5 1 2 3 4 5 1 2 3 4 5
Q24. Given the code fragment:
Assume that the system date is June 20, 2014. What is the result?
A. Option A
B. Option B
C. Option C
D. Option D
Answer: A
Q25. Given the code fragment:
What is the result if the integer aVar is 9?
A. 10 Hello world!
B. 10 Hello universe!
C. 9 Hello world!
D. Compilation fails.
Answer: A
Q26. Given:
public class ColorTest {
public static void main(String[] args) {
String[] colors = {"red", "blue","green","yellow","maroon","cyan"};
int count = 0;
for (String c : colors) {
if (count >= 4) {
break;
}
else {
continue;
}
if (c.length() >= 4) {
colors[count] = c.substring(0,3);
}
count++;
}
System.out.println(colors[count]);
}
}
What is the result?
A. Yellow
B. Maroon
C. Compilation fails
D. A StringIndexOutOfBoundsException is thrown at runtime.
Answer: C
Explanation: The line, if (c.length() >= 4) {, is never reached. This causes a compilation error.
Note: The continue statement skips the current iteration of a for, while , or do-while loop. An unlabeled.break.statement terminates the innermost.switch,.for,.while, or.do-while.statement, but a labeled.break.terminates an outer statement.
Q27. Given the code fragment:
What is the result?
A. A B C
B. A B C D E
C. A B D E
D. Compilation fails.
Answer: C
Q28. Given the code fragment:
What is the result?
A. May 04, 2014T00:00:00.000
B. 2014-05-04T00:00: 00. 000
C. 5/4/14T00:00:00.000
D. An exception is thrown at runtime.
Answer: D
Explanation:
java.time.temporal.UnsupportedTemporalTypeException: Unsupported field: HourOfDay
Q29. Given the code fragment:
public static void main(String[] args) {
int iArray[] = {65, 68, 69};
iArray[2] = iArray[0];
iArray[0] = iArray[1];
iArray[1] = iArray[2];
for (int element : iArray) {
System.out.print(element + " ");
}
A. 68, 65, 69
B. 68, 65, 65
C. 65, 68, 65
D. 65, 68, 69
E. Compilation fails
Answer: B
Q30. Given:
What is the result?
A. simaple A
B. Capital A
C. simaple A default Capital A
D. simaple A default
E. Compilation fails.
Answer: C
Explanation:
Here we have to use two ternary operators combined. SO first we can use to check first
condition which is x > 10, as follows;
x>10?">": (when condition false) Now we have to use another to check if x<10 as follows;
x<10?V:"=" We can combine these two by putting last ternary statement in the false
position of first ternary statement as follows;
x>10?">":x<10?'<':"="
https;//docs.oraclexom/javase/tutorial/java/nutsandbolts/if.html
