AP® Computer Science A glossary

NullPointerException

Course: AP® Computer Science A Shows up in: Unit 1: Using Objects and Methods

The exception thrown when a method is called on a null reference.

Appears in the course and exam description (CED): 1.14.A.2

The code compiles, but when the call runs there is no object, so the program stops with a NullPointerException.

Related terms

• null
• Exception
• Instance method