标题: [Oracle interview]What does it mean that a method or field is \"static\"? [打印本页] 作者: 龚城师 时间: 2013-8-16 16:49 标题: [Oracle interview]What does it mean that a method or field is \"static\"? 作者: 陈西 时间: 2013-8-16 16:54
Static variables and methods are instantiated only once per class. In other words they are class variables, not instance variables. If you change the value of a static variable in a particular object, the value of that variable changes for all instances of that class.Static methods can be referenced with the name of the class rather than the name of a particular object of the class (though that works too). That's how library methods like System.out.println() work out is a static field in the