Variable Length Argument Rules in Java
Java included a feature that simplifies the creation of methods that require variable number of arguments. This is known as vararg. vararg is the short for of Variable Length Arguments.
5 Facts about Variable Length Argument Rules in Java
1. A variable-length argument is specified by three periods (…).
Eg:
static void TestVariableArgument(int ... v) {
}
This syntax tells the compiler that TestVariableArgument( ) can be called with zero or more arguments.
2. In the case of no arguments, the length of the array is zero.
3. A method can have “normal” parameters along with a variable-length parameter and the variable-length parameter must be the last parameter declared by the method.
4. Overloading a method that takes a variable-length argument is possible.
5. If a method call conflicts with two methods that implements variable argument or other leads to error.
