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Q1. Given the code fragment: 

System.out.printIn("Result: " + 2 + 3 + 5); 

System.out.printIn("Result: " + 2 + 3 * 5); 

What is the result? 

A. Result: 10 

Result: 30 

Result: 10 

Result: 25 

C. Result: 235 

Result: 215 

D. Result: 215 

Result: 215 

E. Compilation fails 

Answer:


Q2. Given the code fragment: 

What could expression1 and expression2 be, respectively, in order to produce output –8, 16? 

A. + +a, - -b 

B. + +a, b- 

C. A+ +, - - b 

D. A + +, b - 

Answer:


Q3. Given: 

What is the reference type of myZ and what is the type of the object it references? 

A. Reference type is Z; object type is Z. 

B. Reference type is Y; object type is Y. 

C. Reference type is Z; object type is Y. 

D. Reference type is X; object type is Z. 

Answer:


Q4. given: 

A. ns = 50 S = 125 

ns = 125 S = 125 

ns = 100 S = 125 

B. ns = 50 S = 125 

ns = 125 S = 125 

ns = 0 S = 125 

C. ns = 50 S = 50 

ns = 125 S = 125 

ns = 100 S = 100 

D. ns = 50 S = 50 

ns = 125 S = 125 

ns = 0 S = 125 

Answer:


Q5. Given the code fragment: 


Q6. Given: 

What is the result? 

A. One 

B. Two 

C. Three 

D. Compilation fails 

Answer:


Q7. The catch clause argument is always of type__________. 

A. Exception 

B. Exception but NOT including RuntimeException 

C. Throwable 

D. RuntimeException 

E. CheckedException 

F. Error 

Answer:


Q8. 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 

What is the result? 

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

Answer:


Q9. What is the result? 

A. They match They really match 

B. They really match 

C. They match 

D. Nothing Prints 

E. They really match They really match 

Answer:


Q10. Which two are valid declarations of a two-dimensional array? 

A. int [] [] array2D; 

B. int [2] [2] array2D; 

C. int array2D []; 

D. int [] array2D []; 

E. int [] [] array2D []; 

Answer: AD