Guava Longs类

Longs 是一个用于原始类型long的实用类。它提供了Long或Arrays中没有的与long基元相关的静态实用方法。

声明 :

@GwtCompatible(emulated=true)public final class Longsextends Object

下表显示了Guava Longs类的字段摘要 :

Guava Longs类提供的一些方法是 。

异常 :

下表显示了Guava Longs类提供的其他一些方法：

下面给出了一些例子，显示了Guava Longs类方法的实现：

例子1：

// Java code to show implementation// of Guava Longs.asList() method  import com.google.common.primitives.Longs;import java.util.*;  class GFG {    // Driver method    public static void main(String[] args)    {        long arr[] = { 3L, 4L, 5L, 6L, 7L };          // Using Longs.asList() method which wraps        // the primitive long array as List of        // long Type        List<Long> myList = Longs.asList(arr);          // Displaying the elements        System.out.println(myList);    }}

输出:

[3, 4, 5, 6, 7]

例子2：

// Java code to show implementation// of Guava Longs.toArray() method  import com.google.common.primitives.Longs;import java.util.*;  class GFG {    // Driver method    public static void main(String[] args)    {        List<Long> myList = Arrays.asList(3L, 4L, 5L, 6L, 7L);          // Using Longs.toArray() method which        // converts a List of Longs to an        // array of long        long[] arr = Longs.toArray(myList);          // Displaying the elements        System.out.println(Arrays.toString(arr));    }}

输出:

[3, 4, 5, 6, 7]

例子3：

// Java code to show implementation// of Guava Longs.concat() method  import com.google.common.primitives.Longs;import java.util.*;  class GFG {    // Driver method    public static void main(String[] args)    {        long[] arr1 = { 3L, 4L, 5L };        long[] arr2 = { 6L, 7L };          // Using Longs.concat() method which        // combines arrays from specified        // arrays into a single array        long[] arr = Longs.concat(arr1, arr2);          // Displaying the elements        System.out.println(Arrays.toString(arr));    }}

输出:

[3, 4, 5, 6, 7]

例子4：

// Java code to show implementation// of Guava Longs.contains() method  import com.google.common.primitives.Longs;  class GFG {    // Driver method    public static void main(String[] args)    {        long[] arr = { 3L, 4L, 5L, 6L };          // Using Longs.contains() method which        // checks if element is present in array        // or not        System.out.println(Longs.contains(arr, 4L));        System.out.println(Longs.contains(arr, 7L));    }}

输出:

truefalse

例子5：

// Java code to show implementation// of Guava Longs.min() method  import com.google.common.primitives.Longs;  class GFG {    // Driver method    public static void main(String[] args)    {        long[] arr = { 3L, 4L, 5L, 6L };          // Using Longs.min() method        System.out.println(Longs.min(arr));    }}

输出:

3

例子6：

// Java code to show implementation// of Guava Longs.max() method  import com.google.common.primitives.Longs;  class GFG {    // Driver method    public static void main(String[] args)    {        long[] arr = { 3L, 4L, 5L, 6L };          // Using Longs.max() method        System.out.println(Longs.max(arr));    }}

输出:

6