Groovy 关系运算符
2018-12-29 14:00 更新
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 -
运算符 | 描述 | 例子 |
== | 测试两个对象之间的等同性 | 2 == 2将得到true |
!= | 测试两个对象之间的差异 | 3!= 2将得到true |
< | 检查左对象是否小于正确的操作数。 | 2 < 3将得到true |
<= | 检查左对象是否小于或等于右操作数。 | 2 < 3将得到true |
> | 检查左对象是否大于右操作数。 | 3 > 2将得到true |
>= | 检查左对象是否大于或等于右操作数。 | 3 = 2将得到true |
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"); } }
当我们运行上面的程序,我们将得到以下结果。可以看出,结果如从上面所示的操作符的描述所预期的。
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
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