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Award-Winning Java Tutors

Lorenzo

Certified Tutor

2+ years

Lorenzo

BOE
Lorenzo's other Tutor Subjects
AP Calculus AB
Pre-Calculus
Middle School Math
Geometry

I'm Lorenzo! I'm a rising senior at the University of Pennsylvania studying engineering and education. Teaching has been a lifelong passion and in school I am a part of multiple tutoring organizations in the Philadelphia area. I am passionate about math and science (especially computer science), as ...

Education

University of Pennsylvania

BOE

Simon

Certified Tutor

2+ years

Simon

MS
Simon's other Tutor Subjects
Probability
Calculus 1
AP Physics 1
AP Physics C: Mechanics

I have a PhD in computational physics from the University Of Pennsylvania, as well as a degree in physics and computer science from the University Of British Columbia. I have years of experience as a teaching assistant and have been an instructor at a college level. I've taught hundreds of students ...

Education

University of Pennsylvania

MS

University of British Columbia

MS

Alex

Certified Tutor

2+ years

Alex

BS
Alex's other Tutor Subjects
AP Calculus AB
College Algebra
Pre-Calculus
Geometry

Studying Computer Science at Rice, Alex writes Java regularly for coursework and projects, so he's deeply familiar with the sticking points: object-oriented design, inheritance hierarchies, and debugging cryptic NullPointerExceptions. He walks through each concept by building small, working programs...

Education

Rice University

BS

Alliyah

Certified Tutor

2+ years

Alliyah

BS
Alliyah's other Tutor Subjects
AP Calculus AB
College Algebra
Trigonometry
Statistics

Object-oriented programming in Java trips students up when abstract concepts like inheritance, polymorphism, and interface design collide with unfamiliar syntax all at once. Alliyah untangles these layers separately, building intuition for how classes interact before layering on implementation detai...

Education

Harvard University

BS

Anita

Certified Tutor

2+ years

Anita

AM
Anita's other Tutor Subjects
Java
College Computer Science
JavaScript
HTML

I am a professional web developer with 15+ years experience with back-end development (Java, PHP, C#, .Net, REST API), database design/development (SQL, MYSQL, SQL Server) as well as front end development (CSS, HTML, XML, JavaScript, JQuery). I double majored in English and Computer Science and ha...

Education

Cornell University

AM

University of Pennsylvania

AM

Nicholas

Certified Tutor

2+ years

Nicholas

Bachelor's
Nicholas's other Tutor Subjects
Trigonometry
Pre-Calculus
Geometry
Algebra

Hi, I'm Nic :) I have a Masters in philosophy and a Bachelors in computer science. I've worked as an educator for over a decade, thoroughly enjoy tutoring high school students, and can't wait to start working with you (or your student) towards persistent academic success! Feel free to reach out with...

Education

University

Bachelor's

Carlos

Certified Tutor

2+ years

Carlos

Bachelor's
Carlos's other Tutor Subjects
Competition Math
Middle School Math
Geometry
Algebra

I've helped several hundred students in a wide variety of subjects, from executive functioning to computer science to standardized testing. I also help students with general support in math and English. Most of my students are around 9-17, but I work well with students who are older and a little you...

Education

University

Bachelor's

Samuel

Certified Tutor

2+ years

Samuel

BS
Samuel's other Tutor Subjects
Pre-Calculus
Middle School Math
Geometry
Calculus 3

Object-oriented programming trips up a lot of students when inheritance hierarchies and polymorphism stop being abstract definitions and start showing up in actual code. Samuel studied computer science at UMBC and taught at a coding summer camp, so he's used to walking someone through why an interfa...

Education

University of Maryland-Baltimore County

BS

Alison

Certified Tutor

2+ years

Alison

Bachelor's
Alison's other Tutor Subjects
Middle School Math
Java
High School Computer Science
College Computer Science

As experienced and passionated educator with a Bachelor's degree in Computer Science from Rice University, I am passionate about empowering students to achieve their academic goals. With over 3 years of tutoring experience in subjects such as AP Computer Science A, Machine Learning, and SAT Math, I ...

Education

Rice University

Bachelor's

Parampal

Certified Tutor

2+ years

Parampal

MS
Parampal's other Tutor Subjects
Pre-Algebra
Linear Algebra
Pre-Calculus
Middle School Math

I am an experienced Mathematics teacher and have been teaching for the past 5 years. I am a certified Microsoft Developer and did my Master's (Computer Science) at Dalhousie University Canada. I love to work with individuals and explain problems by breaking them into smaller ones. I am an enthusias...

Education

Dalhousie University

MS

Meet Our Expert Tutors

Connect with highly-rated educators ready to help you succeed.

Yvan

AP Statistics Tutor • +55 Subjects

I'm patient, personable, and have an incredible gift for explaining things in a way that makes sense. I majored in Math Education (with a minor in Computer Science), and I have more than eight years of experience teaching math and other STEM subjects.

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Srdjan

AP Statistics Tutor • +41 Subjects

I am a Georgia Tech graduate in Electrical Engineering. I am able to tutor advanced math and physics for high school students and beyond.

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Mark

AP Statistics Tutor • +27 Subjects

I am a graduate from Rochester Institute of Technology with a master's in Game Design and Development. My passions lie in everything related to games and mathematics. In the past, I have tutored various subjects in mathematics throughout high school and college, including but not limited to Algebra, Algebra II, Trigonometry, Calculus, Discrete Mathematics, Mathematics of Graphical Simulation, and Linear Algebra. As for technology, I am more than happy to reach out for help in Web Development (HTML, CSS, Javascript) or C# programming. I believe that every person can learn any topic. While every individual has different tastes, strengths, and weaknesses, there is no such thing as an "incapability" to know a subject. Education often possesses a guise of anti-fun, but I can promise you that all topics can be engaging, and I am willing to show you how engaging mathematics and technology can be. As a Game Designer, I have a deep interest in both playing games and making games. This includes games of all kinds: video games, board games, tabletop role-playing games, trading card games, miniatures, and even some sports like tennis or ping pong. Games act as a fantastic teaching tool. They teach by design without users recognizing. It is always a satisfying moment when somebody says "I learned that word from Magic" or "D&D taught me that." Remember: you can succeed. If something is important to you, then it's always worthwhile.

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Sky

AP Statistics Tutor • +30 Subjects

I am a graduate student at George Mason University studying Computer Science. I also graduated at Vanderbilt University, with Bachelors Degrees in Computer Science, Mathematics, and Philosophy. When a student does not understand a topic or concept, I believe the best way to teach it is to meet students where they are at, exploring the aspects of a student's lack of understanding and finding a way to explain the concept in a way that resonates with and makes sense to the student.

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Chris

Applied Mathematics Tutor • +48 Subjects

I am a Masters student in Physics at the University of Washington and have over 10 years of teaching and tutoring experience. Most recently, I worked as a teacher at the Yellow Wood Academy, a private high school that offers students a specialized one-on-one classroom environment. At YWA, I taught all high school science classes (including AP, Computer Programming, and Environmental Science) and all levels of high school math. In addition to my teaching and tutoring duties, I designed individualized lesson plans, curricula, homework assignments, and tests. Subjects I have successfully tutored Physics: all levels Chemistry: all levels high school, plus P-Chem, O-Chem Biology: all levels high school Math: all levels high school, plus Differential Equations, Statistics, some Group Theory. Standardized test preparation (incl. SAT, ACT, GRE, MCAT) Need help in another area? Just ask! While math and science are the subjects I am most passionate about, I am well-versed in many academic areas, and I may be able to help you.

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Robert

Statistics Tutor • +21 Subjects

Hi, my name is Bob Gannon. I am a retired Electrical Engineer with over 35 years of experience teaching other engineers and helping them understand difficult subjects. I have a bachelor's degree in Electrical Engineering from the University of Maryland and a Master's degree from Johns Hopkins University. I am passionate about learning and I am continuously working to improve my skills. While working with you, if there is a topic that I am not very familiar with, I will research it and come up with the best way to present it to you. I look forward to working with you to help you understand your subject matter and enjoy learning. When we work together, we are a team, and I will do whatever I can to help you excel in whatever subject we apply ourselves to.

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Clifford

AP Statistics Tutor • +30 Subjects

I'm a graduate student in Applied Statistics with experience in general math and computer programming to boot. I currently have a PhD in Applied Statistics with experience in data analytics. I've had the opportunity to do some math and statistics work for hospitals and research facilities, and I enjoy getting to share my passion for math with others to assist them in their education.

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Isaiah

Applied Mathematics Tutor • +35 Subjects

I have been coaching students to their best performance in math for seven years. I am fluent in all levels of math, primary, secondary, and freshman/sophomore university level. I am also fluent with the mathematics which one may find on the ACT, SAT, GRE, ASVAB, CLEP test and most standardized test. My background in Engineering also gives me a level of confidence with computer science and general sciences such as physics and chemistry. I have over a year of study in each myself. Overall, I have had much success working with students in various languages and levels of computer programming.

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Mithily

Trigonometry Tutor • +42 Subjects

I am a dedicated teacher committed to facilitating students in achieving their goals and in helping them stretch beyond what they think they can achieve.

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Megha

AP Statistics Tutor • +13 Subjects

Teaching is something that's always come naturally to me. Learning, however, wasn't. A few years ago, I was the kind of student who would need tutoring; now, here I am. From coding and math to writing and SAT-prep, I've gone through it all: now, I'm here to help students get through their own academic hurdles, whether it be study habits or terrifying AP's. I've been tutoring since 2017, working to get many students performing above grade level, and most recently worked at Fingertip Learning as a biology and engineering teacher whilst leading scratch and python workshops. Volunteering last year at Lockdown Learning allowed me to discover that I am most passionate at working with students for writing, SAT Math, and coding. I pride myself in my interpersonal, adaptational, empathetic, and organizational skills teaching students K-12 from various backgrounds. I'm a big believer that progress is correlated with time: there's no better time to start learning than now.

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Frequently Asked Questions

Students often find object-oriented programming principles—particularly inheritance, polymorphism, and encapsulation—challenging to grasp beyond memorizing definitions. Exception handling and understanding stack traces is another major pain point; many students panic when they see a NullPointerException or ClassNotFoundException without knowing how to read the error message. Additionally, working with collections (ArrayLists, HashMaps, etc.) and understanding when to use each data structure trips up many learners, as does the difference between pass-by-value and pass-by-reference behavior in Java.

A tutor can teach you systematic debugging techniques like using print statements strategically, leveraging the Java debugger to set breakpoints and step through code, and most importantly, how to read and interpret error messages rather than just seeing them as obstacles. They'll show you how to isolate problems by testing small code segments in isolation, use the call stack to trace where errors originate, and develop the habit of thinking through your logic before running code. This approach transforms debugging from frustrating guesswork into a methodical problem-solving skill.

Syntax is the rules of how to write Java code—knowing that you use curly braces, semicolons, and proper method declarations. Algorithmic thinking is understanding the logic of *what* your code should do and *how* to solve a problem step-by-step, which is language-independent. Many students can write syntactically correct Java but struggle to design an algorithm to solve a problem. A tutor helps you develop algorithmic thinking by working through problems like sorting, searching, and data manipulation before you even write code, then translating that logic into Java syntax.

Rather than memorizing the differences between ArrayList, LinkedList, HashMap, and HashSet, it's more effective to understand the underlying concepts: when you need fast access by index (ArrayList), when you need efficient insertion/deletion (LinkedList), or when you need key-value pairs (HashMap). A tutor can guide you through building simple projects that naturally require different data structures, so you learn *why* you'd choose each one through hands-on experience. This contextual learning sticks much better than abstract comparisons.

OOP is best learned by designing and building actual objects, not by reading definitions of inheritance or polymorphism. A tutor can guide you through creating class hierarchies (like Animal → Dog → GoldenRetriever) and seeing how polymorphism lets you write flexible code, or designing interfaces to solve real problems. Working through code reviews where a tutor explains why a particular OOP design is better than another helps cement these concepts. The key is moving from "I can define encapsulation" to "I can design classes that are maintainable and extensible."

Building real projects—whether a simple to-do list application, a game, or a data analysis tool—forces you to integrate multiple concepts (classes, loops, collections, file I/O, exception handling) in ways that isolated exercises don't. Projects also expose you to practical challenges like managing state, handling edge cases, and writing readable code. A tutor can help you scope projects appropriately for your level, guide you through design decisions, and provide code review feedback that teaches you why certain approaches are better than others.

Absolutely. If you're interested in web development, you'd focus on frameworks like Spring and databases; for data science, you'd emphasize working with libraries and handling large datasets; for game development, you'd explore game engines and graphics libraries. While core Java fundamentals (OOP, collections, exception handling) apply everywhere, a tutor familiar with your specific goals can prioritize which advanced topics matter most and show you real examples in your area of interest. This keeps learning focused and motivating rather than abstract.

Beyond knowing Java syntax and libraries, an effective Java tutor should be able to explain *why* code works the way it does, not just show you examples. They should have real-world coding experience so they understand practical challenges, be comfortable reviewing your code and explaining design trade-offs, and most importantly, be able to meet you at your level—whether you're struggling with loops or designing complex class hierarchies. They should also help you develop debugging intuition and problem-solving approaches that transfer to new situations, rather than just solving problems for you.

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