Here are the collections of solved MCQ questions for Java proficiency test includes the collection of MCQ questions on fundamentals of Java programming language. It includes interview questions for Java proficiency test on Java classes, uses of jdb, and the prepared Statement object in JDBC.
1. All java classes are derived from
A) java.lang.Class
B) java.util.Name
C) java.lang.Object
D) java.awt.Window
2. The jdb is used to
A) Create a jar archive
B) Debug a java program
C) Create C header file
D) Generate java documentation
3. What would happen if “String[]args” is not
included as an argument in the main method.
A) No error
B) Compilation error
C) The program won’t run
D) Program exit
4. For the execution of DELETE SQL query in JDBC, ………….
the method must be used.
A) executeQuery()
B) executeDeleteQuery()
C) executeUpdate()
D) executeDelete()
5. Which method will a web browser call on a new applet?
A) main method
B) destroy method
C) execute method
D) init method
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6. Which of the following is not mandatory in a variable declaration?
A) a semicolon
B) an identifier
C) an assignment
D) a data type
7. When a programming class implements an interface, it must provide behavior for
A) two methods defined in that interface
B) any methods in a class
C) only certain methods in that interface
D) all methods defined in that interface
8. In order to run JSP ……………….. is required.
A) Mail Server
B) Applet viewer
C) Java Web Server
D) Database connection
9. State true or false.
i) AWT is an extended version of swing
ii) Paint( ) of Applet class cannot be overridden
A) i-false, ii-false
B) i-false,ii-true
C) i-true, ii-false
D) i-true, ii-true
10. Prepared Statement object in JDBC used to execute……….. queries.
A) Executable
B) Simple
C) High level
D) Parameterized
Answers:
1. C) java.lang.Object
2. B) Debug a java program
3. C) The program won’t run
4. C) executeUpdate()
5. D) init method
6. C) an assignment
7. D) all methods … interface
8. C) Java Web Server
9. A) i-false, ii-false
10.D) Parameterized
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