Rupa Pandit solutions for कंप्युटर एपलीकेशंस [अंग्रेजी] कक्षा १० आईसीएसई chapter 2 - Class as the Basis of all Computation [Latest edition]

Putting all relevant data and methods in one boundary is called:

It can be called an object factory:

Two objects of the same class:

Java has ______ primitive data types.

Identify the correct statement.

Identify the incorrect statement.

Which of the following is implicit typecasting?

Keyword that helps in allocating memory to an objects is ______.

Identify the true statement.

Identify the false statement.

Name the feature of java depicted in the above picture.

A mechanism where one class acquires the properties of another class:

Method which is a part of a class rather than an instance of the class is termed as ______.

State True or False.

Variables attached to an object define their state.

State True or False.

Member methods or functions that are attached to an object define their state.

State True or False.

Composite type of data is readily available for programmer's use.

State True or False.

‘int’ is a type of primitive data.

State True or False.

Arrays are primitive type of data.

Identify, given that.

This datatype can store values.

Identify, given that.

The datatype that is identified by the compiler.

Identify, given that.

These members of an object define their behaviour.

Identify, given that.

This can be called an object factory.

Identify, given that.

It is the concept of hiding the background details of a process.

Given below is a real-life case.

Class name: Airport

Name two objects of this class.

Given below is a real-life case.

Class name: School

Name two methods of this class.

Given below is a real-life case.

Class name: Hospital

Name two member data of this class.

Given below is a real-life case.

Class name: City

Name two objects of this class. Also name two data and two methods of this class.

Given below is a real-life case.

Class name: Monument

Name two objects of this class. Also name two data and two methods of this class.

Given below is a partial program code. Identify any error, if present. Also find the following in it:

[Class name, Object name, Array, member data, data type]

Customer ct = new Customer ();
ct.fnInput();
ct.fnOutput();

Given below is a partial program code. Identify any error, if present. Also find the following in it:

[Class name, Object name, Array, member data, data type]

int p = 4.5;

Given below is a partial program code. Identify any error, if present. Also find the following in it:

[Class name, Object name, Array, member data, data type]

boolean bp = 'True';

Given below is a partial program code. Identify any error, if present. Also find the following in it:

[Class name, Object name, Array, member data, data type]

class Banker
{
   short c_id;
   double balance;
   long phone_num;
}

Given below is a partial program code. Identify any error, if present. Also find the following in it:

[Class name, Object name, Array, member data, data type]

int RM [] = new RM[12];

Given below is a program. Identify the following:

class Student
{
    String Name;int Age ; double Marks;
    void fnInput ()
    {
       Scanner sc = new Scanner(System.in);
       System.out.println("Enter Name:");
       Name = sc.nextLine ();
       System.out.println("Enter Age:");
       Age = sc.nextInt ();
       System.out.println("Enter Marks:");
       Marks = sc.nextDouble ();
    }
    void fnDisplay()
    {
       System.out.println("Name is:"+Name);
       System.out.println("Age is:"+Age);
       System.out.println("Marks is:"+Marks );
       if (Marks >=80)
       System.out.println(“Grade is A");
       else if (Marks >=60)
          System.out.println("Grade is B");
       else if (Marks >=40)
          System.out.println("Grade is C");
       else
          System.out.println(“Grade is F");
    }
    void main()
    {
       Student obSt1 = new Student ();
       obSt1.fnInput ();
       obSt1.fnDisplay ();
       Student obSt2 = new Student ();
       obSt2.fnInput ();
       obSt2.fnDisplay ();
    }
}

Name the following:

What is an instance of the class called?

Name the following:

The method which has same name as that of the class name.