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2. 学习Groovy
3. Show Example

Show Example

关系运算符允许对象的比较。 以下是Groovy中可用的关系运算符 -

操作者	描述	例
==	测试两个对象之间的相等性	2 == 2将给出真实
!=	测试两个对象之间的差异	3！= 2将给出真实
<	检查左对象是否小于右操作数。	2 <3将给出真实
<=	检查左对象是否小于或等于右操作数。	2 <= 3将给出真实
>	检查左对象是否大于右操作数。	3> 2将给出真实
>=	检查左对象是否大于或等于右操作数。	3> = 2将给出真实

以下代码段显示了如何使用各种运算符。

class Example { 
   static void main(String[] args) { 
      def x = 5;
      def y = 10;
      def z = 8;
      if(x == y) { 
         println("x is equal to y"); 
      } else 
         println("x is not equal to y"); 
      if(z != y) { 
         println("z is not equal to y"); 
      } else 
         println("z is equal to y"); 
      if(z != y) { 
         println("z is not equal to y"); 
      } else 
         println("z is equal to y"); 
      if(z<y) { 
         println("z is less than y"); 
      } else 
         println("z is greater than y"); 
      if(x<=y) { 
         println("x is less than y"); 
      } else 
         println("x is greater than y"); 
      if(x>y) { 
         println("x is greater than y"); 
      } else 
         println("x is less than y"); 
      if(x>=y) { 
         println("x is greater or equal to y"); 
      } else 
         println("x is less than y"); 
   } 
} 

当我们运行上述程序时，我们将得到以下结果。 可以看出，结果如上所述的操作者描述所预期的那样。

x is not equal to y 
z is not equal to y 
z is not equal to y 
z is less than y
x is less than y 
x is less than y 
x is less than y