Comprehensive Android Developer Bootcamp - String is an Object, After all!

The video tutorial explores the concept of primitives in programming, focusing on integers and doubles, and clarifies the misconception about strings being primitives. It explains that strings are objects and belong to a class, inheriting from the object class. The tutorial demonstrates various string methods and operations, encouraging learners to experiment with these methods to understand their functionality better.

What is a key characteristic of primitive types in Java?

• They have methods.

• They are singular types.

• They inherit from the Object class.

• They are objects.

Why is it redundant to use 'new String()' in Java?

• Because it does not compile.

• Because strings are not objects.

• Because it creates unnecessary objects.

• Because it is not allowed in Java.

What does the fact that a string is an object imply?

• It is a primitive type.

• It cannot be modified.

• It has no methods.

• It inherits from the Object class.

Which of the following is a method inherited from the Object class?

• substring()

• equals()

• charAt()

• toUpperCase()

Which method can be used to check if a string is empty?

• isNull()

• isEmpty()

• isBlank()

• isVoid()

What does the 'contains' method in a string do?

• Checks if a string is null.

• Checks if a string is empty.

• Checks if a string contains a sequence of characters.

• Checks if a string starts with a specific character.

What is the result of calling 'isEmpty()' on a non-empty string?

• It returns true.

• It returns false.

• It throws an exception.

• It returns null.