What is the output of the following code?
(Hint: CharSequence is an interface.)
Created by Nancy K.A.N.
@12:10 05-Jul-2025
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Saturday, July 5, 2025
Friday, July 4, 2025
Java Behavioral Design Patterns
Behavioral patterns in Java address object communication. Using behavioral patterns, you can define the interaction and communication among objects as well as between objects and the user. For example, you can use behavioral design patterns to distribute responsibilities or a chain of command. Which of the following are behavioral patterns?
a) Command pattern
b) Observer pattern
c) Singleton pattern
d) Factory pattern
e) Facade pattern
Created by Nancy K.A.N.
@14:14 04-Jul-2025
Wednesday, July 2, 2025
Java Variables - 1
Which of the following are invalid variable names in Java?
a) !
b) $
c) _$
d) _
Created by Nancy K.A.N.
@23:09 02-Jul-2025
Tuesday, July 1, 2025
Java String API - 1
Which of the following methods is used to convert a Java String to an array of characters?
a) split()
b) getChars()
c) getBytes()
d) toCharArray()
Created by Nancy K.A.N.
@23:05 01-Jul-2025
Monday, June 30, 2025
Java Variables - 1
Which of the following are not local variables?
a) Variables declared in a method
b) Variables declared in a block inside a method
c) Non-static variables declared in a class
d) Variables as method arguments
e) Static variables declared in a class
Created by Nancy K.A.N.
@21:29 30-Jun-2025
Sunday, June 29, 2025
Java Exceptions - 1
Which of the following keywords are not related to Java exceptions?
a) try
b) throw
c) catch
d) final
e) finally
f) catches
g) throws
Created by Nancy K.A.N.
@22:24 29-Jun-2025
Saturday, June 28, 2025
Java Unchecked Exceptions
Which of the following are Java unchecked exceptions?
a) InterruptedException
b) ArithmeticException
c) NullPointerException
d) SQLException
e) ClassNotFoundException
Created by Nancy K.A.N.
@22:14 28-Jun-2025
https://kannancy.blogspot.com/
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