java - Beanshell 不等于声明

Question

什么是 beanshell 中的 if not equal 语句？如果这相等:

if ("myVarValue".equals(vars.get("MY_VARIABLE")))

Answer 1

使用 ! 一元 boolean 逻辑补码运算符:

if (!"myVarValue".equals(vars.get("MY_VARIABLE")))

引用资料

• JLS 15.15.6 Logical Complement Operator !

The type of the operand expression of the unary ! operator must be boolean or Boolean, or a compile-time error occurs. The type of the unary logical complement expression is boolean.

At run time, the operand is subject to unboxing conversion if necessary; the value of the unary logical complement expression is true if the (possibly converted) operand value is false and false if the (possibly converted) operand value is true.

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测试 if (!something) 的另一个选项是测试 if (something == false)。

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