java - 命令行和 groovyConsole 上的 groovy 错误

Question

当我尝试运行以下代码时出现错误:

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groovy:000> 1st = [1, 2, 3]

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这是我得到的错误:

ERROR groovy.lang.MissingMethodException:
No signature of method: java.lang.Integer.call() is applicable for argument types: (java.util.ArrayList) values: [[1, 2, 3]]
Possible solutions: wait(), any(), abs(), wait(long), any(groovy.lang.Closure), and(java.lang.Number)
        at groovysh_evaluate.run (groovysh_evaluate:2)

任何想法可能是什么问题？

铁螳螂7x

Answer 1

变量不能以数字开头。将 1st 更改为 first 足以使一切按预期工作:

 first = [1,2,3]