Java本地静态方法引用的简写语法

Question

Is there a shorthand way to get a method reference to a local static method the same way the this keyword or class prefix can be dropped when invoking a method?

The obvious thing would be to use ::myStaticMethod but that does not seem to compile:

class MyClass {
   static void myStaticMethod () {}
   static Runnable runner = ::myStaticMethod; // doesn't compile
      // requires MyClass prefix despite being in the same class
}

Answer 1

Alas, there is no shortcut. According to the JLS (15.13) , the grammar of method references is as follows:

 MethodReference: ExpressionName :: [TypeArguments] Identifier ReferenceType :: [TypeArguments] Identifier Primary :: [TypeArguments] Identifier super :: [TypeArguments] Identifier TypeName . super :: [TypeArguments] Identifier ClassType :: [TypeArguments] new ArrayType :: new 

In all cases, there's something before the :: .

This grammar is also discussed less formally in the Java tutorial on method references .