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Q101. Given the code fragment:
Which three code fragments can be independently inserted at line nl to enable the code to print one?
A. Byte x = 1;
B. short x = 1;
C. String x = "1";
D. Long x = 1;
E. Double x = 1;
F. Integer x = new Integer ("1");
Answer: A,B,F
Q102. Given:
Which code fragment, when inserted at line 14, enables the code to print Mike Found?
A. int f = ps.indexOf {new patient (“Mike”)};
B. int f = ps.indexOf (patient(“Mike”));
C. patient p = new Patient (“Mike”); int f = pas.indexOf(P)
D. int f = ps.indexOf(p2);
Answer: C
Q103. Given:
What is the result?
A. Initialized Started
B. Initialized Started Initialized
C. Compilation fails
D. An exception is thrown at runtime
Answer: B
Q104. Given the code fragment:
String[] cartoons = {"tom","jerry","micky","tom"};
int counter =0;
if ("tom".equals(cartoons[0])) {
counter++;
} else if ("tom".equals(cartoons[1])) {
counter++;
} else if ("tom".equals(cartoons[2])) {
counter++;
} else if ("tom".equals(cartoons[3])) {
counter++;
}
System.out.print(counter);
What is the result?
A. 1
B. 2
C. 4
D. 0
Answer: A
Explanation: Counter++ will be executed only once because of the else if constructs.
Q105. Given the code fragment:
System.out.println(2 + 4 * 9 - 3); //Line 21
System.out.println((2 + 4) * 9 - 3); // Line 22
System.out.println(2 + (4 * 9) - 3); // Line 23
System.out.println(2 + 4 * (9 - 3)); // Line 24
System.out.println((2 + 4 * 9) - 3); // Line 25
Which line of codes prints the highest number?
A. Line 21
B. Line 22
C. Line 23
D. Line 24
E. Line 25
Answer: B
Explanation: The following is printed: 35 51
35
26
35
Q106. Given: class Base {
public static void main(String[] args) {
System.out.println("Base " + args[2]);
}
}
public class Sub extends Base{
public static void main(String[] args) {
System.out.println("Overriden " + args[1]);
}
}
And the commands:
javac Sub.java
java Sub 10 20 30
What is the result?
A. Base 30
B. Overridden 20
C. Overridden 20 Base 30
D. Base 30 Overridden 20
Answer: B
Q107. Given the following four Java file definitions:
// Foo.java
package facades;
public interface Foo { }
// Boo.java
package facades;
public interface Boo extends Foo { }
// Woofy.java
package org.domain
// line n1
public class Woofy implements Boo, Foo { }
// Test.java
package.org;
public class Test {
public static void main(String[] args) {
Foo obj=new Woofy();
Which set modifications enable the code to compile and run?
A. At line n1, Insert: import facades;At line n2, insert:import facades;import org.domain;
B. At line n1, Insert: import facades.*;At line n2, insert:import facades;import org.*;
C. At line n1, Insert: import facades.*;At line n2, insert:import facades.Boo;import org.*;
D. At line n1, Insert: import facades.Foo, Boo;At line n2, insert:import org.domain.Woofy;
E. At line n1, Insert: import facades.*;At line n2, insert:import facades;import org.domain.Woofy;
Answer: E
Q108. Given the code fragment:
What is the result?
A. 100
B. 101
C. 102
D. 103
E. Compilation fails
Answer: E
Q109. Given:
What is the result?
A. 0 Done
B. First Exception Done
C. Second Exception
D. Done Third Exception
E. Third Exception
Answer: B
Q110. Given:
What is the output?
A. 1Z0
B. 1Z0-808
C. An exception will be thrown.
D. Compilation fails due to error at line 3.
E. Compilation tails due to error at line 4.
Answer: E
Explanation:
Option E is the correct answer. Code fails to compile because there is no method called concert in StringBuilder class. The concert method is in String class. Hence option E is correct Here we should have used append method of StringBuilder class, in that case option B would be correct. https://docs.oracle.com/javase/tutorial/java/data/buffers.html
