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Ints lastIndexOf() function in Java
The lastIndexOf() method of the Ints class returns the index of the last appearance of the value target in array. The syntax is as follows −
public static int lastIndexOf(int[] arr, int target)
Here, arr is the array of int values, whereas target is the int value for which we are finding the last index.
Let us first see an example −
Example
import com.google.common.primitives.Ints;
class Demo {
public static void main(String[] args) {
int[] myArr = { 10, 20, 30, 40, 50, 60,20, 80, 20, 100 };
System.out.println(Ints.join("-", myArr));
// finding last index of element 20
int index = Ints.lastIndexOf(myArr, 20);
if (index != -1) {
System.out.println("The last index of element 20 = " + index);
} else {
System.out.println("The element 20 is not in the array.");
}
}
}Output
10-20-30-40-50-60-20-80-20-100 The last index of element 20 = 8
Updated on: 24-Sep-2019
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