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try (BufferedReader br = new BufferedReader(new InputStreamReader(System.in))) {
Object[] test = Arrays.stream(br.readLine().split(" ")).map(string -> Integer.parseInt(string)).toArray();
System.out.println(Arrays.toString(test));
} catch (IOException E) {
}
So this code works but it returns an array of type Object[]
However, what I want is to make it return an array of type int[].
does anyone have an idea of how I can accomplish that?
717
Print Array in One Line with Java StreamsArrays. toString() and Arrays. toDeepString() just print the contents in a fixed manner and were added as convenience methods that remove the need for you to create a manual for loop.
An array is a fixed size element of the same type. The lambda expressions can also be used to initialize arrays in Java.
To initialize or instantiate an array as we declare it, meaning we assign values as when we create the array, we can use the following shorthand syntax: int[] myArray = {13, 14, 15}; Or, you could generate a stream of values and assign it back to the array: int[] intArray = IntStream.
Use the for Loop to Populate an Array in Java Use the Arrays.copyOf () Method to Fill Element in a Java Array Use the Arrays.fill () Method to Fill Elements in a Java Array Based on the user definition, the array will be primitive, or the object (or non-primitive) references of a class.
Answer: There are several ways to define an int array in Java; let’s take a look at a few examples. 1) Declare a Java int array with initial size; populate it later If you know the desired size of your array, and you’ll be adding elements to your array some time later in your code, you can define a Java int array using this syntax:
How can I populate the 11 values generated from the above for loop into my array? First you need to define what numbers is, you have only declared it. Then insert the values you want.
Depending on your needs you can also create an int array with initial elements like this: // (1) define your java int array int [] intArray = new int [] {4,5,6,7,8}; // (2) print the java int array for (int i=0; i<intArray.length; i++) { System.out.println (intArray [i]); }
to retrieve an array of int type rather than Object, you can use the mapToInt method.
int[] test = Arrays.stream(br.readLine().split(" "))
.mapToInt(Integer::parseInt).toArray();
note that you can simplify your code by using a method reference within the argument of the mapToInt method.
reading:
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