Core java interview Questions You'll Most Likely Be Asked (Second Edition)

Explain the return keyword with a code sample.
Answer:
The return keyword is used at the end of a method to return a
value which is the result of some computation. The value
returned must match the return type of the method. The following
code demonstrates this:
public int add(int num1, int num2){
int sum = num1+num2;
return sum;
}
This method has an int return type. It returns the sum of addition.
Even if a method does not return anything, the return keyword
may optionally be specified without any value. The following code
demonstrates this:
public void printSum(int a, int b) {
int sum = a+b;
System.out.println(sum);
return;
}

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In this case, the method has a void return type which indicates
that the method does not return anything. However, the return
keyword is still specified.

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080.
a.
b.
c.
d.
081.
CHAPTER
07
Inner Classes
What is an inner class? What are the different types of
inner classes?
Answer:
An inner class is any class defined inside the body of another
class. There are 4 types of inner classes as follows:
Nested class: Class is defined within the body of another
class. It has access to all the members of the outer class.
Static nested class: A nested class that is static is known as
a static nested class. It cannot access non–static members of
the outer class.
Method local inner class: A class that is defined inside a
method of another class is known as a method local inner
class. Such an inner class can only access final members of
the outer class.