
windows - How to resolve Java Runtime (class file version 55.0), …
Exception in thread "main" java.lang.UnsupportedClassVersionError: myProject has been compiled by a more recent version of the Java Runtime (class file version 55.0), this version of the Java Runtime only recognizes class file versions up to 52.0. Here is the JRE location under my Run Configuration:
python - How to make a class JSON serializable - Stack Overflow
Sep 22, 2010 · class FileItem(dict): def __init__(self, fname): dict.__init__(self, fname=fname) f = FileItem('tasks.txt') json.dumps(f) #No need to change anything here This works if your class is just basic data representation, for trickier things you can always set …
java - Error: Could not find or load main class - Stack Overflow
Jan 2, 2016 · To be clear, the name of this class is not TheClassName, It's thepackagename.TheClassName. Attempting to execute TheClassName does not work, because no class having that name exists. Not on the current classpath anyway. Finally, note that the compiled (.class) version is executed, not the source code (.java) version. Hence “CLASSPATH.”
python - How to find elements by class - Stack Overflow
Mar 5, 2015 · # parse html page_soup = soup(web_page.read(), "html.parser") # filter out items matching class name all_songs = page_soup.findAll("li", "song_item") # traverse through all_songs for song in all_songs: # get text out of span element matching class 'song_name' # doing a 'find' by class name within a specific song element taken out of 'all_songs ...
Initialize static variables in C++ class? - Stack Overflow
Static member variables always hold the same value for any instance of your class: if you change a static variable of one object, it will change also for all the other objects (and in fact you can also access them without an instance of the class - ie: an object).
python - Importing files from different folder - Stack Overflow
In file_b.py, I would like to import a class A in file_a.py under the folder a. Solutions #1 A quick but dirty way. Without installing the package like you are currently developing a new project. Using the try catch to check if the errors. Code example:
c# - Convert base class to derived class - Stack Overflow
My Derived Class. public class MyDerivedClass : MyBaseClass { public string DerivedProperty1 { get; set; } public string DerivedProperty2 { get; set; } public string DerivedProperty3 { get; set; } } Previous method to get a populated base class
reflection - C# getting its own class name - Stack Overflow
Jan 21, 2010 · Then, you can reach the name in the derived class. Returns derived class name. Of course, when using the new keyword "nameof", there will be no need like this variety acts. Besides you can define this: public static class Extension { public static string NameOf(this object o) { return o.GetType().Name; } } And then use like this:
Can a CSS class inherit one or more other classes?
.foo, .bar, .baz { font-size : 2em; /* attribute base class for A */} .foo, .bar { font-weight : bold; /* attribute class A */} .foo { color : green; /* attribute class B */} The main complaint here is that now I have to retype every selector from attribute class A again to specify that the elements they should select should also inherit ...
oop - Is there a benefit to defining a class inside another class in ...
Sep 17, 2008 · If the class bar was defined outside of class foo instead, as well as its inherited version (which would be called bar2 for example), then defining the new class foo2 would be much more painful, because the constuctor of foo2 would need to have its first line replaced by self.a = bar2(), which implies re-writing the whole constructor.