Skip to content

Learn Practice Plan Tutors Ask AI

⌘K

Sign in Join freeGet started

Courses Lessons Quick lessons Merit Tutors' Videos

Loading

Every AP course and the SAT, with the best lessons, Merit AI, and a plan for every test.

Learn

Courses
Lessons
Quick lessons
Merit Tutors' Videos
Merit AI

Study

Exam Sprint
Quick session
Learning plan
My schedule
Progress

Tutoring

Find a tutor
Become a tutor
Partner with Merit
For teachers

Merit

About
Pricing
For parents
How ranking works
Privacy
Terms

Videos play on YouTube. AP® and SAT® are trademarks of the College Board, which is not affiliated with Merit.

© 2026 Merit

Learn Practice Plan Ask AI

AP Computer Science A›Unit 1: Using Objects and Methods›Calling methods

Calling Instance Methods

Instance methods act on a particular object, called with dot notation. Calling one on null throws a NullPointerException.

Dot notation
Methods that return values
NullPointerException

Master this topicQuick session · about 8 min

Watch the top lessonCodeHS Find a tutor

Search AP CSA

Quiz coming up?Connect your calendar: Merit preps you for every quiz and test.Sign up and connect

3 videos ranked by how well they teach

1

Calling Instance Methods

879 views on YouTube · 1 year ago

AP CSA · Calling Instance Methods

2

AP CSA Unit 5 Writing Methods (Instance Methods)

189 views on YouTube · 5 years ago

AP CSA · Calling Instance Methods

3

2020 AP CSA MCQ Question 24 - Static Variables and Instance Methods

7 views on YouTube · 4 months ago

AP CSA · Calling Instance Methods

More lessons from Unit 1: Using Objects and Methods

The best-ranked videos for the rest of this unit.

substring And length (Java String Methods)

47K views on YouTube · 3 years ago

AP CSA · String Methods

Autograders: Java String Methods

9.3K views on YouTube · 11 years ago

AP CSA · String Methods

Computer Science AP - Magpie - Using other String Methods

3.7K views on YouTube · 8 years ago

AP CSA · String Methods

Intro Python- String Methods

3.6K views on YouTube · 6 years ago

AP CSA · String Methods

2.7: String Methods! AP Computer Science A

3.1K views on YouTube · 4 years ago

AP CSA · String Methods

APCS Java String Methods

2.3K views on YouTube · 13 years ago

AP CSA · String Methods

AP Computer Science String Methods

2.2K views on YouTube · 6 years ago

AP CSA · String Methods

String Methods

2.1K views on YouTube · 6 years ago

AP CSA · String Methods

Variables and Primitive Data Types (Part 1)

1.8K views on YouTube · 1 year ago

AP CSA · Variables and Primitive Data Types

Variables and Primitive Data Types (Part 2)

1.4K views on YouTube · 1 year ago

AP CSA · Variables and Primitive Data Types

AP CSA - Unit 2: Using Objects - Lesson 6: String Methods

822 views on YouTube · 3 years ago

Goldie's Math Emporium

AP CSA · String Methods

Java Strings and String Methods - AP CSA

555 views on YouTube · 6 years ago

AP CSA · String Methods

Quiz on Calling Instance Methods soon?

Connect your class calendar and Merit lines up the lessons for every quiz and test, days before it's due.

Works with Canvas, Schoology, Blackbaud, Google Classroom, and more.

Sign up and connect

1Using Objects and Methods

Algorithms, Programming, and Compilers
Variables and Primitive Data Types
Expressions, Assignment, and Casting
APIs, Libraries, and Documentation
Method Signatures and Class Methods
The Math Class and Wrapper Classes
Objects, Classes, and Constructors
Calling Instance Methods
String Methods

Next topic

String Methods

209daysGet the AP CSA score you want.Free diagnostic, then a day-by-day Exam Sprint to exam day.

Best teachers for this topic

1CodeHS
2Barb Milleson
3zhang sbin

Get a AP CSA tutor

Teacher? Add a lesson or guide for this topic

Also called: instance methods, null pointer exception