Guava – Chars.compare()方法与实例

Guava的Chars类的Chars.compare()方法是用来比较两个指定的char值。这些值被作为参数传递，比较的结果是第一个值和第二个值的差。因此，它可以是正数、零或负数。

语法:

public static int compare(char a, char b)

参数: 这个方法接受两个参数。

a: 这是第一个要比较的char对象。
b: 这是第二个要比较的char对象。

返回类型。 该方法返回一个int值。它的返回值是：

如果’a’等于’b’则为0，
正值’a’大于’b’，
负值’a’小于’b’

异常情况。 该方法没有任何异常。

示例1:

// Java code to show implementation of
// Guava's Chars.compare() method
import com.google.common.primitives.Chars;
  
class GFG {
    public static void main(String[] args)
    {
        char a = 'c';
        char b = 'c';
  
        // compare method in Char class
        int output = Chars.compare(a, b);
  
        // printing the output
        System.out.println("Comparing " + a
                           + " and " + b + " : "
                           + output);
    }
}

输出:

Comparing c and c : 0

示例2:

// Java code to show implementation of
// Guava's Chars.compare() method
import com.google.common.primitives.Chars;
  
class GFG {
    public static void main(String[] args)
    {
        char a = 'd';
        char b = 'D';
  
        // compare method in Char class
        int output = Chars.compare(a, b);
  
        // printing the output
        System.out.println("Comparing " + a
                           + " and " + b + " : "
                           + output);
    }
}

输出:

Comparing d and D : 32

示例3:

// Java code to show implementation of
// Guava's Chars.compare() method
import com.google.common.primitives.Chars;
  
class GFG {
    public static void main(String[] args)
    {
        char a = 'E';
        char b = 'c';
  
        // compare method in Char class
        int output = Chars.compare(a, b);
  
        // printing the output
        System.out.println("Comparing " + a
                           + " and " + b + " : "
                           + output);
    }
}

输出: