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Q121. Given the code in a file Traveler.java: 

And the commands: 

Javac Traveler.java 

Java Traveler Java Duke What is the result? 

A. Happy Journey! Duke 

B. Happy Journey! Java 

C. An exception is thrown at runtime 

D. The program fails to execute due to a runtime error 

Answer:


Q122. 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:

Explanation: The following is printed: 35 51 

35 

26 

35 


Q123. Given: 

How many objects have been created when the line / / do complex stuff is reached? 

A. Two 

B. Three 

C. Four 

D. Six 

Answer:


Q124. Given: 

What is the result? 

A. 100 210 

B. Compilation fails due to an error in line n1 

C. Compilation fails due to an error at line n2 

D. Compilation fails due to an error at line n3 

Answer:


Q125. Given the code fragment: 

Which code fragment prints red: blue: small: medium? 

A. Option A 

B. Option B 

C. Option C 

D. Option D 

Answer:


Q126. Given: 

public class MyClass { 

public static void main(String[] args) { 

while (int ii = 0; ii < 2) { 

ii++; 

System.out.println("ii = " + ii); 

What is the result? 

A. ii = 1 ii = 2 

B. Compilation fails 

C. The program prints nothing 

D. The program goes into an infinite loop with no output 

E. The program goes to an infinite loop outputting: ii = 1 ii = 1 

Answer:

Explanation: The while statement is incorrect. It has the syntax of a for statement. 

The while statement continually executes a block of statements while a particular condition is true. Its syntax can be expressed as: 

while (expression) { statement(s) } The while statement evaluates expression, which must return a boolean value. If the expression evaluates to true, the while statement executes the statement(s) in the while block. The while statement continues testing the expression and executing its block until the expression evaluates to false. 

Reference: The while and do-while Statements 


Q127. 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:


Q128. Given the code format: 

Which code fragment must be inserted at line 6 to enable the code to compile? 

A. DBConfiguration f; return f; 

B. Return DBConfiguration; 

C. Return new DBConfiguration; 

D. Retutn 0; 

Answer:


Q129. Given the following classes: 

Which two options fail to compile when placed at line n1 of the main method? 

A. employee.salary = 50_000; 

B. director.salary = 80_000; 

C. employee.budget = 200_000; 

D. manager.budget = 1_000_000; 

E. manager.stockOption = 500; 

F. director.stockOptions = 1_000; 

Answer: C,E 


Q130. Given the code fragment

Which code fragments, inserted independently, enable the code compile? 

A. t.fvar = 200; 

B. cvar = 400; 

C. fvar = 200; cvar = 400; 

D. this.fvar = 200; this.cvar = 400; 

E. t.fvar = 200; Test2.cvar = 400; 

F. this.fvar = 200; Test2.cvar = 400; 

Answer: