Java Arrays - fill() Method
The java.util.Arrays.fill() method is used to assign the specified boolean value to each element of the specified range of the specified array of booleans.
Syntax
public static void fill(boolean[] a, int fromIndex, int toIndex, boolean val)
Parameters
a |
Specify the array to be filled. |
fromIndex |
Specify the index of the first element (inclusive) to be filled with the specified value. |
toIndex |
Specify the index of the last element (exclusive) to be filled with the specified value. |
val |
Specify the value to be stored in all elements of the array. |
Return Value
void type.
Exception
- Throws IllegalArgumentException, if fromIndex > toIndex.
- Throws ArrayIndexOutOfBoundsException, if fromIndex < 0 or toIndex > a.length.
Example:
In the example below, the java.util.Arrays.fill() method is used to fill a specified range of a given boolean array with a specified boolean value.
import java.util.*;
public class MyClass {
public static void main(String[] args) {
//creating a boolean array
boolean MyArr[] = {true, false, false, true, false};
//printing array
System.out.print("MyArr contains:");
for(boolean i: MyArr)
System.out.print(" " + i);
//fill the specified range of the array
//with true boolean value
Arrays.fill(MyArr, 1, 4, true);
//printing array
System.out.print("\nMyArr contains:");
for(boolean i: MyArr)
System.out.print(" " + i);
}
}
The output of the above code will be:
MyArr contains: true false false true false MyArr contains: true true true true false
❮ Java.util - Arrays
