Apart from integer, float double etc types that a method can return, a method can also return arrays. Make sure to declare a method’s return type in its method declaration. A method returns to the code that invoked it when it. Hence, we convert the array into a list first by using java.util.Arrays.asList(array) and then reverse the list. As per Java Language Specification, the methods in Java can return only one value at a time. When passing a two dimensional array to a method, the reference of the array is passed to the method. When we pass an array to a method as an argument, actually the address of the array in the memory is passed (reference). Your problem isn't with the "return", it's with the earlier declaration of variable "a" and the declaration of the method. Please share the article if you like it. In both cases, you declared it as "int", but it is [a reference to] an array… Therefore, any changes to this array in the method will affect the array. As we saw it is very simple to pass or return multidimensional array to/from the method. So returning multiple values from a method is theoretically not possible in Java. Double[]. Autoboxing is a meager implementation of generic types. 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. 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. You have to pass an 'exemplar' to the toArray() method and it has to be an array of some type of objects, e.g. That’s all for this article. 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 … You declare a method's return type in its method declaration. 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. In this article, we are going to learn-how to return an array from a method in Java. The example below shows 2 methods. 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. You can also return an array from a method. In the above program, we returned a two-dimensional array from a method. How to Return Object from a Method in JAVA. 7.5 Returning Array from Methods. But the beauty of Java lies in the fact that we can do desired things with some smart workarounds. Returning an Array from a Method An array can be returned from a method just like any other data type. You can pass a two dimensional array to a method just as you pass a one dimensional array. Within the body of the method, you use the return statement to return the value. completes all the statements in the method, reaches a return statement, or; throws an exception (covered later), whichever occurs first. The toArray() method returns an array of Objects (Object[]) that can't even be cast explicitly to a double[]. The third method is to use the function java.util.Collections.reverse(List list) method.This method reverses the elements in the specified list. Then return the array. 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