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ICSE Class 10 User-Defined Methods and Constructors — practice questions — page 2

Explore 96 free User-Defined Methods and Constructors questions in ICSE Class 10 Computer Applications. Open each question or exercise to read its content, reference answers and available explanation.

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User-Defined Methods and Constructors questions and exercises with answers

Showing questions 31–60 of 96.

Where does the compiler-inserted default constructor reside?Read the answer and worked solution →What default value do boolean fields receive upon construction?Read the answer and worked solution →What initial value do reference fields receive by default?Read the answer and worked solution →What parameter type does a copy constructor require?Read the answer and worked solution →What purpose does a copy constructor serve in a program?Read the answer and worked solution →Does Java generate a default copy constructor automatically?Read the answer and worked solution →Which call invokes another constructor within the same class?Read the answer and worked solution →Where must a this() call be placed inside a constructor?Read the answer and worked solution →Which keyword accesses a superclass constructor in Java?Read the answer and worked solution →What term denotes a constructor accepting zero arguments?Read the answer and worked solution →Where does a Java constructor allocate reference objects?Read the answer and worked solution →Which modifiers should not be applied to Java constructors?Read the answer and worked solution →What is the final task executed by a Java constructor?Read the answer and worked solution →What distinguishes overloaded constructors in the same class?Read the answer and worked solution →How must overloaded methods differ in formal signature?Read the answer and worked solution →Where must immutable objects be initialized in OOP?Read the answer and worked solution →What can constructor overloading enforce for object creation?Read the answer and worked solution →What state does a properly written constructor leave in an object?Read the answer and worked solution →Match method roles: 1. Read: p. Accessor 2. Change: q. Mutator 3. Manage: r. ManagerRead the answer and worked solution →Match param terms: 1. Value: p. By value 2. Formal: q. Declared 3. Actual: r. Pass argRead the answer and worked solution →Match return kinds: 1. Void: p. No return 2. Value: q. Yield sum 3. Object: r. Ref sumRead the answer and worked solution →Match method scopes: 1. Static: p. Class 2. Inst: q. Per object 3. Priv: r. Local callRead the answer and worked solution →Match call mechanics: 1. Copy: p. Value pass 2. Link: q. Reference 3. Ret: r. Back jumpRead the answer and worked solution →Match method parts: 1. Name: p. Identifier 2. In: q. Input list 3. Body: r. StatementsRead the answer and worked solution →Match header terms: 1. Mod: p. Specifier 2. Ret: q. Type tag 3. Sig: r. Name paramsRead the answer and worked solution →Match state changes: 1. Pure: p. No side fx 2. Impure: q. Mutates 3. Query: r. InspectRead the answer and worked solution →Match overload rules: 1. Name: p. Identical 2. Param: q. Different 3. Ret: r. No effectRead the answer and worked solution →Match param traits: 1. Count: p. Arity 2. Order: q. Sequence 3. Type: r. DatatypeRead the answer and worked solution →Match eval styles: 1. Val: p. Eager eval 2. Ref: q. Alias pass 3. Share: r. Obj refRead the answer and worked solution →Match mutator roles: 1. Set: p. Update val 2. Check: q. Validate 3. Hide: r. EncapsuleRead the answer and worked solution →

Worked practice questions

Where does the compiler-inserted default constructor reside?

  1. In the .class file
  2. In the .java file
  3. In the .html file
  4. In the .json file
Show answer and solution

Correct answer: A. In the .class file

The compiler-generated default constructor exists inside the compiled .class file.

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What default value do boolean fields receive upon construction?

  1. null
  2. true
  3. zero
  4. false
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Correct answer: D. false

Default initialization sets boolean fields to false in a class.

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What initial value do reference fields receive by default?

  1. zero
  2. null
  3. void
  4. true
Show answer and solution

Correct answer: B. null

Uninitialized reference type variables default to a null value in Java.

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