Java Interview Guide : 200+ Interview Questions and Answers - Variable Arguments

The video tutorial explains variable arguments in Java, highlighting their flexibility in accepting multiple parameters. It details how Java implements them similarly to arrays, allowing looping and summing of values. Key rules include ensuring variable arguments are the last parameter in a method. The tutorial also covers using complex types as variable arguments and concludes with a recommendation to practice with examples.

What is a key advantage of using variable arguments in Java?

• They allow methods to accept a fixed number of parameters.

• They make methods run faster.

• They enable methods to accept any number of parameters.

• They restrict methods to only primitive data types.

How are variable arguments represented in Java?

• As a list of strings.

• As a boolean value.

• As a single integer.

• As an array-like structure.

Where should variable arguments be placed in a method's parameter list?

• At the beginning of the parameter list.

• As the last parameter in the list.

• They can be placed anywhere in the list.

• In the middle of the parameter list.

Can variable arguments be used with complex data types?

• Only with arrays.

• No, they can only be used with primitive types.

• Only with strings.

• Yes, they can be used with both simple and complex types.

What should you do to become more comfortable with variable arguments?

• Avoid using them in your code.

• Only read about them without practicing.

• Use them only in complex projects.

• Play around with examples and practice using them.