Java Language Interview - Java Language Interview Question and Answers
Java Language Interview Question and Answers:51. What is the difference between static and non-static variables?
A static variable is associated with the class as a whole rather than with specific instances of a class.
Non-static variables take on unique values with each object instance.
52. What is singleton?
It is one of the design pattern. This falls in the creational pattern of the design pattern. There will be only one instance for that entire JVM. You can achieve this by having the private constructor in the class.
53. What type of parameter passing does Java support?
In Java the arguments are always passed by value.
54. What is the difference between constructors and normal methods?
Constructors must have the same name as the class and can not return a value. They are only called once while regular methods could be called many times and it can return a value or can be void.
55. What is Locale?
A Locale object represents a specific geographical, political, or cultural region.
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