[ 常見問題 ] How do I create and access the global variables in Groovy?

Source From Here
Question
I need to store a value in a variable in one method and then I need to use that value from that variable in another method or closure. How can I share this value?

How-To
In a Groovy script the scoping can be different than expected. That is because a Groovy script in itself is a class with a method that will run the code, but that is all done runtime. We can define a variable to be scoped to the script by either omitting the type definition or in Groovy 1.8 we can add the @Field annotation.

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1. import groovy.transform.Field  
2.   
3. var1 = 'var1'  
4. @Field String var2 = 'var2'  
5. def var3 = 'var3'  
6.   
7. void printVars() {  
8.     println var1  
9.     println var2  
10.     println var3 // This won't work, because not in script scope.  
11. }  

This message was edited 3 times. Last update was at 18/01/2017 16:53:45