What is variable arguments in Java?

Table of Contents

Varargs is a short name for variable arguments. In Java, an argument of a method can accept arbitrary number of values. This argument that can accept variable number of values is called varargs.

What is a variable length argument list?

Variable-length argument lists, makes it possible to write a method that accepts any number of arguments when it is called. For example, suppose we need to write a method named sum that can accept any number of int values and then return the sum of those values.

Is it good to use varargs in Java?

Varargs are useful for any method that needs to deal with an indeterminate number of objects. One good example is String. format . The format string can accept any number of parameters, so you need a mechanism to pass in any number of objects.

What are different types of arguments in Java?

Parameter Types We can use any data type such as primitive data types including int, float, double, char, short, byte, String, and object reference variables for a parameter of a method and constructor. There is no standard limit to specify the number of parameters in the definition of a method.

How do you use variable arguments in Java?

Simple Example of Varargs in java:

class VarargsExample1{
static void display(String… values){
System. out. println(“display method invoked “);
}
public static void main(String args[]){
display();//zero argument.
display(“my”,”name”,”is”,”varargs”);//four arguments.
}

How do you use an argument in Java?

Simple example of command-line argument in java

class CommandLineExample{
public static void main(String args[]){
System.out.println(“Your first argument is: “+args[0]);
}
}

What is variable length argument list explain with example in Java?

A method with variable length arguments(Varargs) in Java can have zero or multiple arguments. Variable length arguments are most useful when the number of arguments to be passed to the method is not known beforehand. They also reduce the code as overloaded methods are not required.

What is argument variable?

Variable Arguments (Varargs) in Java is a method that takes a variable number of arguments. Variable Arguments in Java simplifies the creation of methods that need to take a variable number of arguments.

Is Varargs an array?

Every time we use varargs, the Java compiler creates an array to hold the given parameters. In this case, the compiler creates an array with generic type components to hold the arguments. The varargs usage is safe if and only if: We don’t store anything in the implicitly created array.

What are variable arguments or Varargs?

What is parameter list in Java?

The parameter list of a function describes the number and types of the arguments that the function accepts, and the number and types of the values it returns. The parameter list of a generic function is used to define the overall protocol of the generic function.

What is an argument in Java example?

When a parameter is passed to the method, it is called an argument. So, from the example above: fname is a parameter, while Liam , Jenny and Anja are arguments.