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下面的Groovy/Gremlin片段有什么区别? (均保存为* .groovy文件,并与./gremlin.sh -e [filename].groovy
运行)Groovy/Gremlin类的命名方案(需要大写字母)
class user
{
String username
static void main(String[] args)
{
user mtm = new user()
mtm.username = "MuffinTheMan"
println mtm.username
}
}
和
class User
{
String username
static void main(String[] args)
{
User mtm = new User()
mtm.username = "MuffinTheMan"
println mtm.username
}
}
首先给出了类似这样的3个编译错误:
org.codehaus.groovy.control.MultipleCompilationErrorsException: startup failed:
Script1.groovy: 7: Apparent variable 'mtm' was found in a static scope but doesn't
refer to a local variable, static field or class. Possible causes:
You attempted to reference a variable in the binding or an instance variable from
a static context.
You misspelled a classname or statically imported field. Please check the spelling.
You attempted to use a method 'mtm' but left out brackets in a place not allowed
by the grammar.
@ line 7, column 14.
user mtm = new user()
第二和编译运行得很好,输出:
MuffinTheMan