java: how can i create a function that supports any number of parameters?

java variadic-functions
ufk picture ufk · Nov 18, 2010 · Viewed 11.1k times · Source

is it possible to create a function in java that supports any number of parameters and then to be able to iterate through each of the parameter provided to the function ?

thanks

kfir

Answer

wkl picture wkl · Nov 18, 2010

Java has had varargs since Java 1.5 (released September 2004).

A simple example looks like this...

public void func(String ... strings) {
    for (String s : strings)
         System.out.println(s);
}

Note that if you wanted to require that some minimal number of arguments has to be passed to a function, while still allowing for variable arguments, you should do something like this. For example, if you had a function that needed at least one string, and then a variable length argument list:

public void func2(String s1, String ... strings) {

}

Related questions

What do 3 dots next to a parameter type mean in Java?

What do the 3 dots following String in the following method mean? public void myMethod(String... strings){ // method body }

Read More
Can I pass an array as arguments to a method with variable arguments in Java?

I'd like to be able to create a function like: class A { private String extraVar; public String myFormat(String format, Object ... args){ return String.format(format, extraVar, args); } } The problem here is that args is treated as Object[] in the …

Read More
Java variable number or arguments for a method

Is it possible to declare a method that will allow a variable number of parameters ? What is the symbolism used in the definition that indicate that the method should allow a variable number of parameters? Answer: varargs

Read More