Ints is a utility class for primitive type int. It provides Static utility methods pertaining to int primitives, that are not already found in either Integer or Arrays.
Declaration :
@GwtCompatible(emulated=true) public final class Ints extends Object
Below table shows the Field summary for Guava Ints Class :
Some of the methods provided by Ints Class are :
Exceptions :
- checkedCast : IllegalArgumentException if value is greater than Integer.MAX_VALUE or less than Integer.MIN_VALUE
- min : IllegalArgumentException if array is empty.
- max : IllegalArgumentException if array is empty.
- fromByteArray : IllegalArgumentException if bytes has fewer than 4 elements.
- ensureCapacity : IllegalArgumentException if minLength or padding is negative.
- toArray : NullPointerException if collection or any of its elements is null.
Below table shows some other methods provided by Guava’s Ints Class :
Below given are some examples showing the implementation of methods of Guava’s Ints Class :
Example 1 :
// Java code to show implementation// of Guava Ints.asList() method import com.google.common.primitives.Ints;import java.util.*; class GFG { // Driver method public static void main(String[] args) { int arr[] = { 5, 10, 15, 20, 25 }; // Using Ints.asList() method which wraps // the primitive integer array as List of // integer Type List<Integer> myList = Ints.asList(arr); // Displaying the elements System.out.println(myList); }} |
Output :
[5, 10, 15, 20, 25]
Example 2 :
// Java code to show implementation// of Guava Ints.toArray() method import com.google.common.primitives.Ints;import java.util.*; class GFG { // Driver method public static void main(String[] args) { List<Integer> myList = Arrays.asList(5, 10, 15, 20, 25); // Using Ints.toArray() method which // converts a List of Integer to an // array of int int[] arr = Ints.toArray(myList); // Displaying the elements System.out.println(Arrays.toString(arr)); }} |
Output :
[5, 10, 15, 20, 25]
Example 3 :
// Java code to show implementation// of Guava Ints.concat() method import com.google.common.primitives.Ints;import java.util.*; class GFG { // Driver method public static void main(String[] args) { int[] arr1 = { 5, 10, 15 }; int[] arr2 = { 20, 25 }; // Using Ints.concat() method which // combines arrays from specified // arrays into a single array int[] arr = Ints.concat(arr1, arr2); // Displaying the elements System.out.println(Arrays.toString(arr)); }} |
Output :
[5, 10, 15, 20, 25]
Example 4 :
// Java code to show implementation// of Guava Ints.contains() method import com.google.common.primitives.Ints; class GFG { // Driver method public static void main(String[] args) { int[] arr = { 5, 10, 15, 20 }; // Using Ints.contains() method which // checks if element is present in array // or not System.out.println(Ints.contains(arr, 10)); System.out.println(Ints.contains(arr, 17)); }} |
output :
true false
Example 5 :
// Java code to show implementation// of Guava Ints.min() method import com.google.common.primitives.Ints; class GFG { // Driver method public static void main(String[] args) { int[] arr = { 5, 10, 15, 20 }; // Using Ints.min() method System.out.println(Ints.min(arr)); }} |
Output :
5
Example 6 :
// Java code to show implementation// of Guava Ints.max() method import com.google.common.primitives.Ints; class GFG { // Driver method public static void main(String[] args) { int[] arr = { 5, 10, 15, 20 }; // Using Ints.max() method System.out.println(Ints.max(arr)); }} |
Output :
20
