java(jdk)中是否没有任何抽象方法,但仍被称为抽象类?
当然,javax.swing.abstractaction
java(jdk)中是否没有任何抽象方法,但仍被称为抽象类?
当然,javax.swing.abstractaction
javascript python java c# php android html jquery c++ css ios sql mysql arrays asp.net json python-3.x ruby-on-rails .net sql-server django objective-c excel regex ruby linux ajax iphone xml vba spring asp.net-mvc database wordpress string postgresql wpf windows xcode bash git oracle list vb.net multithreading eclipse algorithm macos powershell visual-studio image forms numpy scala function api selenium