4. compareUnsigned(arr 1, arr 2): compareUnsigned method would compare two arrays that are passed as parameters in a lexicographical style and treating them as unsigned.This method of Integer class would compare two integer values treating them as unsigned and then returning … A reference to an array can be returned from a method, look at the following program : /** * This program demonstrates how a reference to an * array can be returned from a method. Then return the array. That’s all for this article. Two things must be kept in mind while returning an array from a method: (i).return type of method must be array of appropriate type. The example below shows 2 methods. Your problem isn't with the "return", it's with the earlier declaration of variable "a" and the declaration of the method. When passing a two dimensional array to a method, the reference of the array is passed to the method. You can pass a two dimensional array to a method just as you pass a one dimensional array. Make sure to declare a method’s return type in its method declaration. You declare a method's return type in its method declaration. The toArray() method returns an array of Objects (Object[]) that can't even be cast explicitly to a double[]. Apart from integer, float double etc types that a method can return, a method can also return arrays. Autoboxing is a meager implementation of generic types. You can also return an array from a method. Within the body of the method, you use the return statement to return the value. A method returns to the code that invoked it when it: Completes all the statements in the method; Reaches a return statement; or Throws an exception (covered later) Whichever occurs first between the last two. The third method is to use the function java.util.Collections.reverse(List list) method.This method reverses the elements in the specified list. When we pass an array to a method as an argument, actually the address of the array in the memory is passed (reference). As per Java Language Specification, the methods in Java can return only one value at a time. Returning Arrays in Java – Umair Mubeen Jan 13 at 6:31 Create an int[] the length of the ArrayList then put each element of the ArrayList into the new array. Returning an Array from a Method An array can be returned from a method just like any other data type. Please share the article if you like it. As we saw it is very simple to pass or return multidimensional array to/from the method. Hence, we convert the array into a list first by using java.util.Arrays.asList(array) and then reverse the list. In both cases, you declared it as "int", but it is [a reference to] an array… In the above program, we returned a two-dimensional array from a method. Double[]. 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