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What is a default constructor in Java?

easy📝 Conceptual Q11 of 15
Java - Constructors
What is a default constructor in Java?
AA method that returns the default value of a class.
BA constructor with no parameters that Java provides automatically if none is written.
CA constructor that must always be written by the programmer.
DA special method that runs only when a program ends.
Step-by-Step Solution
Solution:

  1. Step 1: Understand what a constructor is

    A constructor is a special method used to create objects of a class.

  2. Step 2: Identify the default constructor

    If no constructor is written, Java automatically provides a constructor with no parameters called the default constructor.

  3. Final Answer:

    A constructor with no parameters that Java provides automatically if none is written. -> Option B

  4. Quick Check:

    Default constructor = automatic no-parameter constructor [OK]
Quick Trick: Default constructor has no parameters and is auto-created if missing [OK]
Common Mistakes:
  • Thinking default constructor must be written manually
  • Confusing default constructor with methods returning default values
  • Believing default constructor runs at program end

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