Ans: Individuals, who focus on developing solutions that benefit the society, are called social entrepreneurs. They develop, fund and implement solutions that are directed towards society, culture and environment.

Ans:
i-Self-doubt comes when we do not have confidence in ourselves and our abilities
ii. Forming a team /team work -Finding suitable people and training them to put in their best

Ans: Areas for green jobs in building and construction include landscape, gardening, maintenance of green components, water management developing new green building, rating programmes, certification services.

Ans: The National Action Plan on Climate Change deals with adverse impacts of climate change on environment, forests, habitat, water resources and agriculture.

Ans: The attitudes that make a successful entrepreneur are
1. Decisiveness
2. Initiative
3. Interpersonal Skills
4. Perseverance
5. Organisational Skill

Ans: Ways to minimise waste and pollution
1. Reusing scrap material.
2. Ensuring quality control
3. Waste exchange
4. Managing e-waste
5. Use of eco-friendly material

Ans: A Java compiler instead of translating Java code to machine language code, translates it into Java Bytecode. A Java interpreter, called the Java Virtual Machine (JVM), translates the bytecode into machine code and then executes it.
The bytecode can be run on any platform as long as it has a JVM running on it. This makes Java programs platform independent and highly portable.  

Ans: Education, banking, railways, telecommunication, hotels, air lines, ecommerce, companies, government sector

Ans: Beginning a comment line with two consecutive forward slashes (//)
Writing the comment between the symbols /* and */

Ans: To make a data member or method of a class visible only within the class. add keyword private before its declaration. 

Ans: Main is a special method that every Java application must have. When you run a program, the statements in the main method are the first to be executed.

Ans: 5 times

Ans: double [] percentage = {78.3, 89.6, 90, 78 ,67};

Ans: A class is a physical or logical entity that has certain attributes. A class is a template from which objects are created. Object is an instance of a class .
Class book can have title, author, publisher, price as the data members. To display the details of class book you would call the method member display().
Method members of a class are invoked through the object like book1 to perform the action associated with that method.

Ans: This loop will run forever since number never changes – it remains at 1.
Correct code
int number = 1;
while (number <= 5)
{System.out.print(“Square of ” + number);
System.out.println(” = ” + number*number);
number++; } 

Ans:

while loop
1.A while loop is an entry controlled loop
2.Body of loop may never be executed
3. The variables in the test condition must be initialized prior to entering the loop structure.

do while loop
1.A do-while loop is an exit control loop.
2. Body of loop is executed at least once
3. It is not necessary to initialize the variables in the test condition prior to entering the loop structure.

Ans: A special method member called the constructor method is used to initialize the data members of the class.

Feature
The constructor has the same name as the class, has no return type, and may or may not have a parameter list.

Ans: n=5

Ans:

13
True
22

Ans: rem=10
case 2 will be executed and rem will become 9 but because of absence of break statement the control will move down(fall through) and case 3 will be executed which will make rem as 10 now break will terminate the switch case statement .

Ans: for(int count = 1; count <= 10; count = count +2)
{System.out.println(count);}

Ans: To enable assertions at runtime, you can enable them from the command line by using the –ea option

Ans: In Java, threads can be created in two ways
1. By extending the Thread class
2. By implementing the Runnable interface

Ans: intValue()

Ans: A method in Java is a block of statements grouped together to perform a specific task. A method has a name, a return type, an optional list of parameters, and a body.

static double product (double number1, double number2)
{return (number1 * number2);}

Ans: An error situation that is unexpected in the program execution and causes it to terminate unexpectedly is called an exception.

For example Division by zero exception:
try
{
int quotient = divide(10,0);
System.out.println(quotient);
}
catch (Exception e)
{
System.out.println(e.getMessage());
}

Ans: Database management concepts are helpful in Government sector for storing details of electoral roll, all types of taxes, criminal records, PAN cards, AADHAR cards, vehicle registration, birth/death certificate registration.

Ans: 

Patient Table

Schema:- Patient (pid, pname,phone,disease)