Dec 15, 2017 · I want to be able to write an array directly as a parameter for my method, instead of storing the array values inside a separate variable. Example: public void myMethod(myObject[] objParam, String[] strParam, Integer[] intParam) { // do stuff }

Nov 23, 2015 · As mention above you can't mix primitive array and Object array, you have to use wrapper class . If function is going to except variable arguments then one the way to write that is using vargs notion. public static <T> void process(T...args) { System.out.println(Arrays.toString(args)); } this notion is used in java internal API

Check out the Java Language Specification, Third Edition, Chapter 8 (Classes). Buried in there is this nugget: If the last formal parameter is a variable arity parameter of type T, it is considered to define a formal parameter of type T[]. The method is then a variable arity method. Otherwise, it is a fixed arity method.

The last formal parameter in a list is special; it may be a variable arity parameter, indicated by an elipsis following the type. If the last formal parameter is a variable arity parameter of type T, it is considered to define a formal parameter of type T[]. The method is then a variable arity method. Otherwise, it is a fixed arity method ...

Oct 29, 2011 · This is a "valid Java way" (as in, it compiles and does what you want): foo(new String[] {"String1", "String2"}); If you have the opportunity to change this method, then you can also consider to change the method to take a varargs argument:

Aug 14, 2022 · If the maximum number of arguments a method could take was large or/and unknown then the approach was to put those arguments in an array and pass them to a method which takes array as a parameter. These 2 approaches were error-prone - constructing an array of parameters every time and difficult to maintain - as the addition of new argument may ...

Jan 26, 2012 · To pass an array as parameter to a method you can use: public void X(int[] array) { } If you want to access an array from two different methods of the same class, you can make the array a member of the class: public class MyClass { int[] array = new int[10]; public void X() { } public void Y() { } }

Apr 5, 2017 · As some others have mentioned, there is now way to do this if you want to be able to accept arrays of primitive types as well (unless you are doing something like in Elliott's solution where you only need and Object and can get by only using methods like Array.getLength(Object) that takes an Object as input).

Jul 7, 2020 · My problem is that Java wants me to first make up a Int[] (e.g. array_of_numbers1 = {1, 2, 3}) before allowing me to pass that Int[] as a parameter in the function that creates the HashMap. Is there any way for me to do this directly, wihtout the need to pass to first create a Int[] variable before passing that into the function?

Feb 28, 2016 · array("blah", "hey", "yo") with the type automatically inferred. I have been working on a useful API for augmenting the Java language to allow for inline arrays and collection types. For more details google project Espresso4J or check it out here