question Which collection class is synchronized in Java

Programming

Which collection class is synchronized in Java?

A. ArrayList
B. HashSet
C. HashMap
D. Vector

'Vector' is a synchronized collection class in Java.

What is the purpose of the 'union' keyword in C?

A. Combine two arrays
B. Combine two structures
C. Combine two functions
D. Combine two variables

What is the purpose of the 'volatile' keyword in C?

A. Declare a volatile variable
B. Indicate an unstable function
C. Declare a constant variable
D. Indicate a variable that can change unexpectedly

What is the purpose of the 'rand' function in C?

A. Generate a random float
B. Generate a random integer
C. Return a fixed value
D. Find the square root

What is the entry point for the execution of a Java program?

A. main() method
B. start() method
C. execute() method
D. run() method

How do you achieve multiple inheritance in Java?

A. Using interfaces
B. Using abstract classes
C. Using multiple extends keyword
D. Java doesn't support multiple inheritance

Which method is called automatically when an object is garbage collected?

A. finalize()
B. dispose()
C. clean()
D. destroy()

What is Java?

A. A scripting language
B. A markup language
C. A programming language
D. A database language

How do you declare a constant pointer in C?

A. const *ptr;
B. *const ptr;
C. const ptr;
D. const int *ptr;

How is a single-line comment written in C?

A. // Comment
B. /* Comment */
C. # Comment
D. -- Comment

What is the purpose of the 'this' keyword in Java?

A. Refer to the current object
B. Refer to the parent class
C. Refer to the child class
D. Refer to the global scope