Java Programming - MCQ Practice Questions

Which of the following is the correct syntax to declare a variable in Java?

Which keyword is used to create a constant variable in Java?

What will be the output of the following code? int x = 5; x += 3; System.out.println(x);

What will be the output of: boolean flag = true; System.out.println(!flag);

What will be the output of: System.out.println($\frac{5}{2}$);

Which keyword is used to prevent a class from being inherited?

Which of the following is a valid variable name in Java?

What will be printed? float f = 5.5f; System.out.println(f);

Which of the following is the correct syntax for a multi-line comment in Java?

What will be the output: String s = "Hello"; System.out.println(s.charAt(1));

What will be the output of: System.out.println(Math.max(5, 10) - Math.min(3, 8));

Which of the following is NOT a valid Java identifier?

Which keyword is used to prevent method overriding in Java?

Which of the following statements about Java packages is correct?

What is the correct way to declare a constant in Java?

Which of the following is a valid variable declaration?

What does the 'super' keyword do in Java?

What is the purpose of the 'instanceof' operator?

What will be the output of: System.out.println($\frac{10}{3}$);

Consider the code: int x = 5; x += 3; What is the value of x?