Java Core Java - Technical Questions and Answers

111.	Can a method be overloaded based on different return type but same argument type ?
	Answer: No, because the methods can be called without using their return type in which case there is ambiquity for the compiler. Workspace Report errors ... Name : Email: View Answer

112.	What happens to a static variable that is defined within a method of a class ?
	Answer: Can't do it. You'll get a compilation error. Workspace Report errors ... Name : Email: View Answer

113.	How many static initializers can you have ?
	Answer: As many as you want, but the static initializers and class variable initializers are executed in textual order and may not refer to class variables declared in the class whose declarations appear textually after the use, even though these class variables are in scope. Workspace Report errors ... Name : Email: View Answer

114.	What is the difference between method overriding and overloading?
	Answer: Overriding is a method with the same name and arguments as in a parent, whereas overloading is the same method name but different arguments Workspace Report errors ... Name : Email: View Answer

115.	What is constructor chaining and how is it achieved in Java ?
	Answer: A child object constructor always first needs to construct its parent (which in turn calls its parent constructor.). In Java it is done via an implicit call to the no-args constructor as the first statement. Workspace Report errors ... Name : Email: View Answer

116.

What is the difference between the Boolean & operator and the && operator?

117.	Which Java operator is right associative?
	Answer: The = operator is right associative. Workspace Report errors ... Name : Email: View Answer

118.	Can a double value be cast to a byte?
	Answer: Yes, a double value can be cast to a byte. Workspace Report errors ... Name : Email: View Answer

119.	What is the difference between a break statement and a continue statement?
	Answer: A break statement results in the termination of the statement to which it applies (switch, for, do, or while). A continue statement is used to end the current loop iteration and return control to the loop statement. Workspace Report errors ... Name : Email: View Answer

120.	Can a for statement loop indefinitely?
	Answer: Yes, a for statement can loop indefinitely. For example, consider the following: for(;;); Workspace Report errors ... Name : Email: View Answer