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
[…] is a method of Ints class in Guava library which is used to compare the two given int values. It takes two integers as […]