Java Interview Question And Answer Static Field in Java Explain Java Interview Question

Publié le: 22 novembre 2013
sur la chaîne: Interview DOT

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What does it mean that a method or field is "static" ? Java Interview Question and Answer ?

1.Static variables and methods are instantiated only once per class.
2.In other words they are class variables, not instance variables.
3.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.
4.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 java.lang.System class.

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