KwickClips Java · 41 sec · free
Why will my program not compile?
Short answer. Often a missing closing brace or semicolon, or a class name that does not match the file name.
Where does a Java program start?
At the main method.
Every program's skeleton
| Part | Looks like |
|---|---|
| Class | class Hello{} |
| main method | main(String[]) |
| Statement | ends with ; |
Remember
| Class name = file name |
| main is the start |
| Each { needs a } |
One missing brace breaks the whole program. Here is the skeleton. A class with braces. Inside it, the main method. Inside main, statements ending in semicolons. Class name matches the file. Main is the start. Close every brace.
This clip is from the full lesson: Introduction to Java: Features, JVM, Bytecode and Your First Program — 8 minutes, with the tables, the quick answers and the whole lesson in text.
Useful for: CBSE Class 11 Information Technology (802), CBSE Class 12 Information Technology (802), ICSE Class 9 Computer Applications, ICSE Class 9 Computer Applications
More KwickClips from this lesson
Is Java still used?43 sec
What does javac produce?39 sec
Which contains which?47 sec
What are the BlueJ steps?40 secDisclaimer. KwickAcademy is free study material for general learning and revision. Parts of it, including the voice-over, are produced with the help of AI tools and may contain errors; if you spot one, please tell us and we will correct it. Syllabus, marks and exam details follow the latest official board publications available to us, and boards can change them at any time, so always confirm against your board's official website and your school. Using this material does not guarantee any marks or result. Board names and trademarks belong to their owners; Kwickprep is not affiliated with or endorsed by any examination board. We never ask for passwords, OTPs or ID numbers. Your progress is saved only in this browser. Full disclaimer · Privacy