Java Arrays.binarySearch(Object [] a, int fromIndex, int toIndex, Object key)
Syntax
Arrays.binarySearch(Object [] a, int fromIndex, int toIndex, Object key) has the following syntax.
public static int binarySearch(Object [] a, int fromIndex, int toIndex, Object key)
Example
In the following code shows how to use Arrays.binarySearch(Object [] a, int fromIndex, int toIndex, Object key) method.
Binary search needs sorted arrays.
//w w w . j a v a2 s. com
import java.util.Arrays;
public class Main {
public static void main(String[] args) {
// initializing sorted array
Object arr[] = {1,2,22,69,111,222};
// value to search
int searchVal = 22;
// entering range of index
int retVal = Arrays.binarySearch(arr,2,4,searchVal);
System.out.println("The index of element 22 is : " + retVal);
}
}
The code above generates the following result.
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