Why do we use variable length arguments in Java?

1.	Why do we use variable length arguments in Java?
Answer» The variable length arguments come into picture when you do not initially know the number of arguments PASSED to the method. The variable length arguments can be zero or more. An example is shown below: public class Demo { public static void Varargs(String... str) { System.out.println("Arguments... "); for (String s : str) System.out.println(s); System.out.println("Count = " + str.length ); } public static void main(String ARGS[]) { Varargs("ARG1", "arg2"); } } The above program displays the following output: Arguments... arg1 arg2 Count = 2

Answer»

The variable length arguments come into picture when you do not initially know the number of arguments PASSED to the method.

The variable length arguments can be zero or more. An example is shown below:

public class Demo { public static void Varargs(String... str) { System.out.println("Arguments... "); for (String s : str) System.out.println(s); System.out.println("Count = " + str.length ); } public static void main(String ARGS[]) { Varargs("ARG1", "arg2"); } }

The above program displays the following output:

Arguments... arg1 arg2 Count = 2

Discussion

No Comment Found

Related InterviewSolutions

Does order of specifiers matter in Java? Will static public void work for main() method?
Can the main method be declared final?
Why do we call System.gc() in Java
Best practices related to Java Collections Framework?
What is a Static Nested Class in Java?
C++ supports Pointers, while Java does not. Why?
Why do we use variable length arguments in Java?
What are the types of Base64 encoding in Java?
What enhancements Java 9 brought to Process API?
Constructor vs Method in Java