Java / Java Identifiers
1.
Java Identifiers.
2.
Is null a keyword?
3.
Can a digit form the first character of an identifier?
4.
Explain var keyword in Java.
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1. Java Identifiers.
Identifiers are the names of variables, methods, classes, packages and interfaces. In the below example, MyClass, MyInterface, method_name, packagename and intVariable are identifiers.
2. Is null a keyword?
The null is not a keyword. null is a literal as true or false.
3. Can a digit form the first character of an identifier?
No. Only characters are allowed.
4. Explain var keyword in Java.
var keyword is introduced in Java 10 to enhance the Java Language to extend type inference to declarations of local variables with initializers. var map = new HashMap < String, Integer > (); var is not a keyword in Java,...
