Java Objective Questions Answers -Chapter 1 Online Quiz Test

• 1. Package of drawstring() method is

  1. java.applet
  2. java.io
  3. javax.swing
  4. java.awt

• 2. Which method executes only once

  1. start() method
  2. init() method
  3. stop() method
  4. destroy() method

• 3. Object which can store group of other objects is called

  1. Collection object
  2. Java object
  3. Package
  4. Wrapper

• 4. All collection classes are available in

  1. java.io package
  2. java.lang package
  3. java.awt package
  4. java.util package

• 5. Thread class is available in

  1. java.io package
  2. java.lang package
  3. java.awt package
  4. java.util package

• 6. Minimum threads in a program are

  1. 1
  2. 2
  3. 5
  4. Many

• 7. JIT meaning

  1. java in time
  2. just in time
  3. join in time
  4. none of above

• 8. After the compilation of the java source code, which file is created by the JVM
  
  

  1. .class
  2. .java
  3. .cdr
  4. .doc

• 9. pow () is associated with which class

  1. Math class
  2. Input stream class
  3. Object class
  4. None of above

• 10. Constructor has return type

  1. True
  2. False

• 11. x=x+1 is equivalent to

  1. ++x
  2. x++
  3. x=x-1
  4. None of these

• 12. If method have same name as class name and method don’t have any return type then it is known as

  1. Destructors
  2. Object
  3. Variable
  4. Constructor

• 13. Methods that have same name, but different Parameter list and different definition known as

  1. Overriding
  2. Constructor
  3. Overloading
  4. none of these

• 14. Inheritance means

  1. Sub class extends super class
  2. Sub class extends Base class
  3. Sub class create object of super class
  4. All of the above

• 15. Which type of inheritance is not supported by java

  1. Single
  2. Multiple
  3. Mulilevel
  4. Hirarchical

• 16. String is the predefined

  1. Method
  2. Class
  3. Variable
  4. Object

• 17. Super is the predefined

  1. Keyword
  2. Method
  3. Keyword and Method
  4. None of above

• 18. Execution of the program is always begins with

  1. Main method
  2. class contain main method
  3. parent class
  4. default package

• 19. All methods of interface are public and abstract

  1. True
  2. False

• 20. In java, gc() method is available in which package

  1. java.lang package
  2. java.util package
  3. java.awt package
  4. java.io package