Fundamentals Of Object-Oriented Programming: Java and IntelliJ - Type Casting

The video tutorial explains type casting in Java, covering both implicit and explicit methods. Implicit casting, or widening, is automatic and safe, while explicit casting, or narrowing, requires manual intervention. Examples demonstrate converting between data types, including integer to string and string to integer conversions, using Java's built-in methods.

What is another name for widening type casting?

• Casting up

• Implicit conversion

• Explicit conversion

• Narrowing conversion

What must a programmer do to perform explicit type casting?

• Rely on the compiler to automatically convert types

• Use a built-in method without specifying types

• Explicitly mention the data type to be converted

• Avoid using any type casting

What happens if explicit type casting is not performed when required?

• The program ignores the type mismatch

• The program runs with default values

• The compiler reports a compile-time error

• The program automatically converts the types

Which method is used to convert an integer to a string in Java?

• Integer.toString()

• String.valueOf()

• Integer.parseInt()

• String.toInteger()

What is the result of converting an integer to a string?

• The integer value is lost

• The data type changes but the value remains the same

• The value changes but the data type remains the same

• Both the value and data type change

Which method is used to convert a string to an integer in Java?

• Integer.parseInt()

• String.valueOf()

• String.toInteger()

• Integer.toString()

What is the outcome of performing arithmetic operations on a string and an integer?

• The operations result in concatenation for strings

• The string is automatically converted to an integer

• The integer is automatically converted to a string

• The operations are not allowed