剛才在學習Java 使用properties類,遇到這樣的錯誤:
Cannot make a static reference to the non-static method getClass() from the type Object
以前使用過getClass,不曉得怎么用的,后來在stackoverflow看到同樣的問題
I have a class that must have some static methods. Inside these static methods I need to call the method getClass() to make the following call:
publicstaticvoid startMusic() { URL songPath=getClass().getClassLoader().getResource("background.midi"); }
However Eclipse tells me:
Cannot make a static reference to the non-static method getClass() from the type Object
What is the appropriate way to fix this compile time error?
牛人的回答是這樣的:
s for the code example in the question, the standard solution is to reference the class explicitly by its name, and it is even possible to do without getClassLoader()
call:
classMyClass{ publicstaticvoid startMusic() { URL songPath =MyClass.class.getResource("background.midi"); } }
This approach still has a back side that it is not very safe against copy/paste errors in case you need to replicate this code to a number of similar classes.
And as for the exact question in the headline, there is a trick posted in the adjacent thread:
Class currentClass =newObject(){}.getClass().getEnclosingClass();
It uses a nested anonymous Object
subclass to get hold of the execution context. This trick has a benefit of being copy/paste safe...