Java Programming - Language Fundamentals - Discussion

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"Time and tide wait for none."

- Alexander Pope

Which is a valid keyword in java?

[A].	interface	[B].	string
[C].	Float	[D].	unsigned

Answer: Option E

Explanation:

interface is a valid keyword.

Option B is wrong because although "String" is a class type in Java, "string" is not a keyword.

Option C is wrong because "Float" is a class type. The keyword for the Java primitive is float.

Option D is wrong because "unsigned" is a keyword in C/C++ but not in Java.

Anand said: (Thu, Nov 18, 2010 10:01:53 AM)

What is a class type? Any example?

Sundar said: (Thu, Nov 18, 2010 10:11:14 AM)

public class Car { ... } Car c = new Car(); Explanation: 'Car' is a class type. 'c' is an object of type 'Car'.

Gaurav said: (Wed, Feb 1, 2012 11:22:11 AM)

Anyone please tell the functionality of the keyword interface i am new to java....

Milanvachhani.Blogspot.Com said: (Thu, Feb 2, 2012 10:33:48 PM)

Interface is one type of class that do not have method implementation. It contains prototype of methods and variables. Variable of interface are final and static by default. You have to implement interface.

Lemky said: (Mon, Mar 5, 2012 12:39:17 PM)

Float comes under the keywords list in Java. In this question why only interface is the answer ?