All java components require names. Names used for classes, variables and methods are called identifiers.
In java there are several points to remember about identifiers. They are as follows:
In java there are several points to remember about identifiers. They are as follows:
- All identifiers should begin with a letter (A to Z or a to z ), currency character ($) or an underscore (-).
- After the first character identifiers can have any combination of characters.
- A key word cannot be used as an identifier.
- Most importantly identifiers are case sensitive.
- Examples of legal identifiers:age, $salary, _value, __1_value
- Examples of illegal identifiers : 123abc, -salary
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