Problem scenario
You are trying to print out a multi-dimensional array in Java. When you try to compile your program, you get this:

error: no suitable method found for toString(String)
System.out.println(Arrays.toString(Arrays.toString(var1)));
^
method Arrays.toString(long[]) is not applicable
(argument mismatch; String cannot be converted to long[])

What should you do?

Solution
You need to pass a one-dimensional array to Arrays.toString in the System.out.println statement.

…

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Problem scenario
You have a public static void main (String[] args) portion of your Java program. You want to have a subroutine such as a function outside of this section. How do you code this?

Solution
In Java methods are components of an object that perform an action on the object themselves. We therefore use the term “method” here and not “function”. Here is an example of a method inside a class that runs from the public static void main(String[] args) section of code:

public class ContClass {
static void contMethod() {
System.out.println(“I just got executed!”); …

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