2. First Java Program in Command Line Using Text Editor

Table of content:
1. Editor vs IDE.
2. Java class vs java file.
3. Class and file names.
4. Multiple classes in a single file.
5. Meaning of the terms in a class.
6. Main method use.
7. Meaning of compile, source code, byte code, object code.
8. Java file extension.
9. Location and full path of the file.
10. Java vs javac commands.

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