Varargs (variable arguments) is a new feature in Java 1.5 which allows us to pass multiple values in a single variable name when calling a method. Of course, it can be done easily using array but the varargs add another power to the language.
The varargs can be created by using three periods (...) after the parameter type. If a method accept others parameter than the varargs, the varargs parameter should be the last parameter to the method. And please be aware that overloading a varargs method can make harder to figure out which method is called in the code.
package org.kodejava.lang;
import java.util.Arrays;
public class VarArgsExample {
public static void main(String[] args) {
VarArgsExample e = new VarArgsExample();
e.printParams(1, 2, 3);
e.printParams(10, 20, 30, 40, 50);
e.printParams(100, 200, 300, 400, 500);
}
public void printParams(int... numbers) {
System.out.println(Arrays.toString(numbers));
}
}
Running the code snippet give you the following output:
[1, 2, 3]
[10, 20, 30, 40, 50]
[100, 200, 300, 400, 500]
Founder at Kode Java Org
A programmer, runner and recreational diver, lives on the island of Bali, Indonesia. Programming in Java, Spring, Hibernate / JPA. You can support me working on this project, buy me a cup of coffee ☕, every little bit helps. Thank you 🙏
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