Guava – Longs.max()方法与实例

Guava – Longs.max() 方法与实例

Longs.max() 是Guava库中Longs类的一个方法,用于查找数组中存在的 greatest 值。该方法返回的值是指定数组中最大的长值。

语法:

public static long max(long... array)

参数: 这个方法需要一个强制参数 array ,它是一个非空的长值数组。

返回值: 本方法返回一个长值,是指定数组中的最大值。

异常情况: 如果数组为空,该方法会抛出IllegalArgumentException。

以下程序说明了上述方法的使用。

例1:

// Java code to show implementation of
// Guava's Longs.max() method
  
import com.google.common.primitives.Longs;
import java.util.Arrays;
  
class GFG {
  
    // Driver's code
    public static void main(String[] args)
    {
  
        // Creating a long array
        long[] arr = { 2, 4, 6, 10, 0,
                       -5, 15, 7 };
  
        // Using Longs.max() method to get the
        // maximum value present in the array
        System.out.println("Maximum value is : "
                           + Longs.max(arr));
    }
}

输出:

Maximum value is : 15

例2:

// Java code to show implementation of
// Guava's Longs.max() method
  
import com.google.common.primitives.Longs;
import java.util.Arrays;
  
class GFG {
  
    // Driver's code
    public static void main(String[] args)
    {
  
        // Creating a long array
        long[] arr = {};
  
        try {
            // Using Longs.max() method to get the
            // maximum value present in the array
            // This should raise "IllegalArgumentException"
            // as the array is empty
            System.out.println("Maximum value is : "
                               + Longs.max(arr));
        }
        catch (Exception e) {
            System.out.println(e);
        }
    }
}

输出:

java.lang.IllegalArgumentException

参考:

https://google.github.io/guava/releases/21.0/api/docs/com/google/common/primitives/Longs.html#max-long…-

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