Throws keyword in Java - Interactive Code Practice

Practice - 5 Tasks

1fill in blank

easy

Complete the code to declare that the method may throw an exception.

Java

public void readFile() [1] IOException { }

Drag options to blanks, or click blank then click option'

Athrow

Bthrows

CthrowsException

DthrowsError

Attempts:

3 left

💡 Hint

Common Mistakes

Using 'throw' instead of 'throws' in method declaration

Misspelling the keyword

Placing the keyword inside the method body

The throws keyword declares that a method might throw an exception.

2fill in blank

medium

Complete the method declaration to indicate it throws multiple exceptions.

Java

public void process() [1] IOException, SQLException { }

Drag options to blanks, or click blank then click option'

Athrow

BthrowsException

Cthrows

DthrowsError

Attempts:

3 left

💡 Hint

Common Mistakes

Using 'throw' instead of 'throws'

Separating exceptions with semicolons instead of commas

Omitting the keyword entirely

The throws keyword can list multiple exceptions separated by commas.

3fill in blank

hard

Fix the error in the method declaration that incorrectly uses the throws keyword.

Java

public void save() [1] IOException { }

Drag options to blanks, or click blank then click option'

Athrows

BthrowsError

CthrowsException

Dthrow

Attempts:

3 left

💡 Hint

Common Mistakes

Using 'throw' instead of 'throws'

Misspelling the keyword

Placing the keyword inside the method body

The correct keyword to declare exceptions is throws, not throw.

4fill in blank

hard

Complete the code to declare a method that throws two exceptions.

Java

public void connect() [1] IOException, SQLException { }

Drag options to blanks, or click blank then click option'

Athrows

B,

C;

Dthrow

Attempts:

3 left

💡 Hint

Common Mistakes

Using 'throw' instead of 'throws'

Separating exceptions with semicolons

Repeating the keyword before each exception

Use throws once, then separate exceptions with a comma.

5fill in blank

hard

Complete the code to declare a method throwing three exceptions correctly.

Java

public void execute() [1] IOException, SQLException, NullPointerException { }

Drag options to blanks, or click blank then click option'

Athrows

B,

C;

Dthrow

Attempts:

3 left

💡 Hint

Common Mistakes

Using multiple 'throws' keywords

Separating exceptions with semicolons

Using 'throw' instead of 'throws'

Use throws once, then separate all exceptions with commas.