JAVA CONCEPTS

Important Java Mcq 1

Which of the following are true about flowlayout?

a. The default layout manager for an Applet is FlowLayout

b. The default layout manager for an application is FlowLayout

c. A layout manager must be assigned to an Applet before the setSize method is called

d. The FlowLayout manager attempts to honor the preferred size of any components

Answer:

a. The default layout manager for an Applet is FlowLayout.

Explanation:

For Panels, including Applets, the default layout manager belongs to the class FlowLayout. For Windows, the default layout manager is a borderLayout. You can change thelayout manager of a container using its setLayout(LayoutManager) method.

Which of the following is not a type of repetition statement in java?

A. while statement B. do…while statement C. for statement D. loop statement Answer: D. loop statement Explanation: Repetition statement in java are while loop ,

How to format date from one form to another?

a) SimpleDateFormat b) DateFormat c) SimpleFormat d) DateConverte Answer: a) SimpleDateFormat Explanation: We can use the SimpleDateFormat function in java to do this! So, option

The mechanism of designing a new class based on one or more existing classes is called?

a. Polymorphism b. Inheritance c. Abstraction d. Encapsulation Answer: b. Inheritance Explanation Inheritance in Java is a mechanism in which one object acquires all the

The expression (int)(76.0252175 * 100) / 100 evaluates to

a. 76 b. 76.0252175 c. 76.03 d. 76.02 Answer: a. 76 Explanation: Firstly, 76.0252175 is multiplied by 100 we get the result as 7602.52175. Now