Thread: Help with passing arrays as arguments

Hello, I have come across a small dilemma. I am having trouble passing an array as an argument without first assigning it to a variable. I have a constructor that takes one of argument of a String array. I am successfully able to get it to work properly by doing this:

public static String lev1a[] = {
"1111111111111111111111",
"1000000000100000000001",
"1000710000020202020201",
"1000011111002020202021",
"1000000000000000000001",
"1111111111111111111111",
};
Level level = new Level(lev1a);

however, I can't find a way to pass a string array as an argument in a way that I don't need to name it/ assign first. I wanted to be able to do something along the lines of this:

Level level = new Level(
"1111111111111111111111",
"1000000000100000000001",
"1000710000020202020201",
"1000011111002020202021",
"1000000000000000000001",
"1111111111111111111111",);

but I can't get this to work. Is there a way to do this/ what is the proper syntax for it?

Originally Posted by Jumbosize

...
however, I can't find a way to pass a string array as an argument in a way that I don't need to name it/ assign first. ...

//
// Z.java
//
// How to initialize an anonymous array as an argument to a method.
//
//  Zaphod_b
//
public class Z {
 
    private String [] strArray;
 
    public static void main(String [] args) {
 
        Z z = new Z(new String[]{"123","456"}); // The argument is an anonymous String array.
 
        System.out.printf("strArray.length = %d\n", z.getStrArray().length);
 
        for (int i = 0; i < z.getStrArray().length; i++) {
            System.out.printf("strArray[%d]: %s\n", i, z.getStrArray()[i]);
        }
 
    } // End main
 
    public Z(String [] sA) {
        strArray = sA;
    }
 
    public String [] getStrArray()
    {
        return strArray;
    }
 
} // End class definition

Output:

strArray.length = 2
strArray[0]: 123
strArray[1]: 456




Cheers!

Z

Thank you! I don't think I would have guessed that on my own, I appreciate it.

There's also a variant. (not necessarily better, just different):

Z z = new Z("123", "456");
 
//...
 
public Z(String... sA) {
    strArray = sA;
}

Originally Posted by pbrockway2

There's also a variant...

Thanks for pointing that out. I like it!


Cheers!

Z