Blocks

When does an instance block execute in Java?

• When the class is loaded

• When an object is created

• When the main method is called

• After the constructor runs

What is the purpose of a static block?

• To initialize instance variables

• To initialize local variables

• To initialize static variables

• To define class-level methods

What is the output of this code?

• Static Block Instance Block Constructor
  Instance Block Constructor

• Instance Block Constructor
  Static Block Instance Block Constructor

• Static Block Constructor
  Static Block Constructor

• Instance Block Constructor
  Instance Block Constructor

What is the main purpose of an instance initializer block?

• Initialize local variables

• Initialize static variables

• Execute code common to all constructors

• Declare methods

Which of the following is NOT true about instance blocks?

• They run before constructors

• They can access instance variables

• They can take parameters

• They are executed each time an object is created

Where is a local block declared?

• Inside a method

• Outside any method

• Inside the constructor only

• Inside the class but outside methods

Which of the following can access this keyword?

• Static block

• Instance block

• Local block

• None of the above

Can a class have multiple static blocks?

• No

• Yes, and they run in declaration order

• Yes, but only one will execute

• Yes, but only if declared after the constructor

Choose the correct order of execution when creating an object:

• Constructor → Instance Block → Static Block

• Static Block → Instance Block → Constructor

• Instance Block → Static Block → Constructor

• Static Block → Constructor → Instance Block

What is the output of the following code?

• Static Block 1

  Main Method

  Static Block 2

• Main Method

  Static Block 1

  Static Block 2

• Static Block 1

  Static Block 2

  Main Method

• Static Block 2

  Static Block 1

  Main Method