Usage of Methods in Java

The video tutorial explains the difference between printing strings and variables in Java, introduces methods and their return types, and discusses access modifiers. It highlights the benefits of using methods for code reuse and organization, and demonstrates how to execute methods using objects.

What happens if you try to print a variable in Java without using double quotes and the variable is not defined?

• The program prints 'null'.

• The program prints an empty string.

• The program throws an error.

• The program prints the variable name.

What is the return type of a method that does not return any value in Java?

• boolean

• int

• void

• String

If a method in Java is supposed to return an integer but returns a string, what will happen?

• The method will throw a type mismatch error.

• The method will return the string as an integer.

• The method will execute without errors.

• The method will return null.

Why are methods used in Java programming?

• To encapsulate repeated code blocks and reduce duplication.

• To duplicate code across multiple pages.

• To make the code run slower.

• To increase the size of the code.

What is the benefit of using methods to encapsulate code blocks?

• It allows for code reuse and reduces duplication.

• It increases the number of lines in the program.

• It makes debugging more difficult.

• It makes the code harder to read.

Where should methods be placed in a Java class?

• Anywhere in the program.

• Inside the class but outside the main method.

• Outside the class.

• Inside the main method.

How can you access methods and variables defined in a Java class?

• By directly calling them from the main method.

• By creating an object of the class.

• By using a static import.

• By defining them as public.