Java.util.Arrays.fill(Object[], Object) Method


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Description

The java.util.Arrays.fill(Object[] a, Object val) method assigns the specified Object reference to each element of the specified array of Objects.

Declaration

Following is the declaration for java.util.Arrays.fill() method

public static void fill(Object[] a, Object val)

Parameters

  • a − This is the array to be filled.

  • val − This is the value to be stored in all elements of the array.

Return Value

This method does not return value.

Exception

ArrayStoreException − if the specified value is not of a runtime type that can be stored in the specified array.

Example

The following example shows the usage of java.util.Arrays.fill() method.

Live Demo
package com.tutorialspoint;

import java.util.Arrays;

public class ArrayDemo {
   public static void main(String[] args) {

      // initializing Object array
      Object arr[] = new Object[] {10.5, 5.6, 4.7, 2.9, 9.7};

      // let us print the values
      System.out.println("Actual values: ");
      for (Object value : arr) {
         System.out.println("Value = " + value);
      }

      // using fill for placing 12.2
      Arrays.fill(arr, 12.2);

      // let us print the values
      System.out.println("New values after using fill() method: ");
      for (Object value : arr) {
         System.out.println("Value = " + value);
      }
   }
} 

Let us compile and run the above program, this will produce the following result −

Actual values:
Value = 10.5
Value = 5.6
Value = 4.7
Value = 2.9
Value = 9.7
New values after using fill() method:
Value = 12.2
Value = 12.2
Value = 12.2
Value = 12.2
Value = 12.2

java_util_arrays.htm

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