This is the java programming questions and answers section on "Applets" with explanation for various interview, competitive examination and entrance test. Solved examples with detailed answer description, explanation are given and it would be easy to understand.
1. Which of these functions is called to display the output of an applet?
- A. display()
- B. print()
- C. displayApplet()
- D. PrintApplet()
Answer: Option B
Explanation:
Whenever the applet requires to redraw its output, it is done by using method paint().
2. Which of these methods can be used to output a sting in an applet?
- A. display()
- B. print()
- C. drawString()
- D. transient()
Answer: Option C
Explanation:
drawString() method is defined in Graphics class, it is used to output a string in an applet.
3. What does AWT stands for?
- A. All Window Tools
- B. All Writing Tools
- C. Abstract Window Toolkit
- D. Abstract Writing Toolkit
Answer: Option C
Explanation:
AWT stands for Abstract Window Toolkit, it is used by applets to interact with the user.
4. Which of these methods is a part of Abstract Window Toolkit (AWT) ?
- A. display()
- B. print()
- C. drawString()
- D. transient()
Answer: Option B
Explanation:
paint() is an abstract method defined in AWT.
5. Which of these modifiers can be used for a variable so that it can be accessed from any thread or parts of a program?
- A. transient
- B. volatile
- C. global
- D. No modifier is needed
Answer: Option B
Explanation:
The volatile modifier tells the compiler that the variable modified by volatile can be changed unexpectedly by other part of the program. Specially used in situations involving multithreading.
