KwickClips Java · 43 sec · free
Can you name a variable int?
Short answer. No. int is a keyword with a fixed meaning.
Are true and false keywords?
No, they are literals, but they still cannot be used as names.
Reserved words
| Keywords have fixed meanings |
| All lowercase: class, if |
| goto, const: reserved, unused |
| true, false, null: literals |
Remember
| Never use a keyword as a name |
| Keywords are lowercase |
Try naming a variable int. Java refuses. Why? Keywords already mean something. They are lowercase. Goto and const are reserved but unused. True, false and null are literals. Never use a keyword as a name. Keywords are lowercase.
This clip is from the full lesson: Java Tokens: Keywords, Identifiers, Literals, Separators and Comments — 8 minutes, with the tables, the quick answers and the whole lesson in text.
Useful for: CBSE Class 12 Information Technology (802), GSEB Std 12 Computer Studies, Programming All levels Java, Programming All levels Java
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